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What is Allergy Relief: Uses, Warnings & Interactions

Updated Jan 12, 2021  •  Published Dec 30, 2020

Allergy Relief overview

BRAND NAMES:

  • Ala-Hist IR, Aldex AN, Allegra, Allegra Allergy, Aller-Chlor, Aller-G-Time, Allergy, Allergy 24Hr, Allergy Medication, Allergy Medicine, Allergy Relief, Allermax, Anti-Hist, Antivert/25, Banophen, Aller-G-Time, Allergy, Allergy Medication, Allergy Medicine, Allergy Relief, Allermax, Anti-Hist, Banophen, Benadryl Allergy, CareALL Complete Allergy Relief, Children's Allergy, Children's Allergy Relief, Children's Benadryl Allergy, Children's PediaClear Cough, Children's Wal-Dryl Allergy, Allergy Relief, Brite-Life Allergy Relief, Children's Allergy Relief, Children's Claritin, Children's Claritin Allergy, Children's Claritin Chewables, Children's Loratadine Allergy, Claritin, Claritin 24HR, Claritin Liqui-Gels, Claritin RediTabs, Good Neighbor Loratadine, Good Neighbor Pharmacy Loratadine, Good Sense Allergy Relief, Good Sense Children's Loratadine, Children's Wal-Zyr All Day Allergy, Children's Allergy Relief, Children's ZyrTEC, Allergy Relief, Children's ZyrTEC Allergy, Equate Allergy Relief, Equate Children's Allergy Relief, Good Neighbor Pharmacy All Day Allergy, Good Neighbor Pharmacy Children's All Day Allergy, Good Sense All Day Allergy, Good Sense Children's All Day Allergy, Health Mart All Day Allergy, Health Mart Allergy Relief, Health Mart Children's All Day Allergy, Leader All Day Allergy, WAL-FEX ALLERGY, Allegra, Allegra Allergy, Allergy 24Hr, Allergy Relief, Children's Allegra Allergy, Children's Allergy Fexofenadine HCl, Good Neighbor Pharmacy Allergy, Good Neighbor Pharmacy Allergy Relief, Good Sense Aller-Ease, Leader 24HR Allergy Relief, Leader Aller-Ease, TopCare 24-Hour Fexofenadine Hydrochloride, Wal-Fex, WAL-FEX ALLERGY, TopCare Allergy, Good Sense Allergy Relief, Aller-Chlor, Allergy, Allergy Relief, C.P.M. Tablets, Chlor-Phen, Chlor-Trimeton Allergy, Ed ChlorPed, ED Chlorphed Jr., ED-CHLOR-TAN, Good Neighbor Pharmacy Allergy, Pharbechlor, Sunmark Allergy, Health Mart Allergy Relief, Loratadine D, Leader Allergy Relief D-24, Alavert D-12 Hour, Allergy & Congestion Relief, Allergy Relief, Allergy Relief-D, Claritin-D, Claritin-D 12HR, Claritin-D 24 Hour, Good Neighbor Allergy & Congestion Relief 24 Hour, Good Neighbor Pharmacy Allergy & Congestion Relief, Good Neighbor Pharmacy Loratadine-D, Health Mart Allergy Relief & Nasal Decongestant, Kirkland Signature AllerClear-D, Leader Allergy Relief D-12, Allergy Relief, Children's Xyzal Allergy 24HR, Xyzal Allergy 24HR, Leader 24HR Allergy Relief, Good Neighbor Pharmacy Allergy Relief

Generic Names:

  • Fexofenadine Hcl

Uses:

  • Treats symptoms of hay fever, hives, and itching skin., Treats hay fever symptoms such as a runny or stuffy nose, sneezing, and watery eyes. Loratadine is an antihistamine, and pseudoephedrine is a decongestant., Treats hay fever, allergy, and cold symptoms., Treats hay fever symptoms and chronic skin hives and itching., Treats hay fever and allergy symptoms, hives, and itching., Treats allergy symptoms and hives., Treats hay fever and other allergies, motion sickness, nausea and vomiting, or other medical conditions., Treats hay fever, allergy, and cold symptoms. Also treats insomnia.

Therapeutic Classes:

  • Antianxiety, Antiemetic, Antimigraine, Antipruritic, Antivertigo, Cold/Cough Agent, Gastrointestinal Agent, Respiratory Agent, Sleep Aid, Sleep Aid, Analgesic, Antivertigo, Respiratory Agent, Sleep Aid, Respiratory Agent, Antipruritic, Respiratory Agent, Respiratory Agent, Cold/Cough Agent, Respiratory Agent, Antihistamine, Less-Sedating/Decongestant Combination, Antihistamine/Decongestant Combination, Respiratory Agent

Forms:

  • Liquid, Tablet, 12 Hour Tablet, Long Acting Tablet, 24 Hour Tablet, Tablet, Long Acting Tablet, Liquid, Long Acting Capsule, Capsule, Liquid, Tablet, Dissolving Tablet, Long Acting Tablet, Tablet, Chewable Tablet, Capsule, Liquid, Tablet, Dissolving Tablet, Liquid, Liquid Filled Capsule, Chewable Tablet, Liquid, Tablet, Long Acting Tablet, Dissolving Tablet, Fizzy Tablet, Chewable Tablet, Capsule, Liquid Filled Capsule, Long Acting Capsule, Capsule, Thin Sheet, Dissolving Tablet, Tablet, Liquid, Liquid Filled Capsule, Chewable Tablet

How it’s taken:

  • By mouth, By mouth, By mouth, By mouth, By mouth, By mouth, By mouth, By mouth

What is Allergy Relief used for?

Loratadine is a prescription and over the counter drug that is used to treat symptoms of allergies including sneezing, runny nose and itchy throat. Loratadine works by preventing histamine from attaching to your cells which cause allergic symptoms. This medication is available as an oral syrup, an oral tablet, disintegrating and as an oral tablet.

What form(s) does Allergy Relief come in

  • Liquid

  • Tablet

  • 12 Hour Tablet

  • Long Acting Tablet

  • 24 Hour Tablet

  • Tablet

  • Long Acting Tablet

  • Liquid

  • Long Acting Capsule

  • Capsule

  • Liquid

  • Tablet

  • Dissolving Tablet

  • Long Acting Tablet

  • Tablet

  • Chewable Tablet

  • Capsule

  • Liquid

  • Tablet

  • Dissolving Tablet

  • Liquid

  • Liquid Filled Capsule

  • Chewable Tablet

  • Liquid

  • Tablet

  • Long Acting Tablet

  • Dissolving Tablet

  • Fizzy Tablet

  • Chewable Tablet

  • Capsule

  • Liquid Filled Capsule

  • Long Acting Capsule

  • Capsule

  • Thin Sheet

  • Dissolving Tablet

  • Tablet

  • Liquid

  • Liquid Filled Capsule

  • Chewable Tablet

What are common Allergy Relief doses?

  • Box 30 Tablets

  • Box 24 Capsules

  • Bottle 100 Tablets

  • Bottle 25 Capsules

  • Bottle 30 Tablets

  • Bottle 40 Capsules

  • Tablet 4MG

Common Allergy Relief prescriptions

  • Allergy Relief
    100 tablets bottle

  • Allergy Relief
    30 tablets bottle

  • Allergy Relief
    300 tablets bottle

  • Allergy Relief
    500 tablets bottle

  • Allergy Relief
    60 tablets bottle

  • Allergy Relief
    10 tablets box

  • Allergy Relief
    24 capsules box

  • Allergy Relief
    30 tablets box

  • Allergy Relief
    30 tablets disintegrating box

  • Allergy Relief
    48 capsules box

  • Allergy Relief
    4mg tablet

How to take Allergy Relief

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Swallow the capsule, tablet, and liquid filled capsule whole. Do not crush, break, or chew it.

  • The chewable tablet must be chewed completely before you swallow it.

  • Make sure your hands are dry before you handle the disintegrating tablet. Peel back the foil from the blister pack, then remove the tablet. Do not push the tablet through the foil. Place the tablet in your mouth. After it has melted, swallow or take a drink of water.

  • Make sure your hands are dry before you handle the disintegrating tablet. Peel back the foil from the blister pack, then remove the tablet. Do not push the tablet through the foil. Place the tablet in your mouth. After it has melted, swallow or take a drink of water.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Swallow the capsule, tablet, and liquid filled capsule whole. Do not crush, break, or chew it.

  • The chewable tablet must be chewed completely before you swallow it.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Drink plenty of fluids.

  • You may take this medicine with food to lessen stomach upset.

  • Swallow the extended-release tablet, extended-release capsule, or liquid-filled capsule whole. Do not crush, chew, or break it.

  • The chewable tablet must be chewed completely before you swallow it.

  • Make sure your hands are dry before you handle the disintegrating tablet. Peel back the foil from the blister pack, then remove the tablet. Do not push the tablet through the foil. Place the tablet in your mouth. After it has melted, swallow or take a drink of water.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup. You might need to shake the medicine before using it.

  • You may take this medicine with food to lessen stomach upset.

  • Make sure your hands are dry before you handle the disintegrating tablet. Peel back the foil from the blister pack, then remove the tablet. Do not push the tablet through the foil. Place the tablet in your mouth. After it has melted, swallow or take a drink of water.

  • The chewable tablet must be chewed completely before you swallow it.

  • Swallow the extended-release tablet, extended-release capsule, or liquid-filled capsule whole. Do not crush, chew, or break it.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup. You might need to shake the medicine before using it.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Drink plenty of fluids.

  • Your doctor will tell you how much of this medicine to use and how often. Do not use more medicine or use it more often than your doctor tells you to.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • After you remove a rapidly disintegrating tablet (Reditab®) from the package, use it right away by putting the tablet on your tongue. The tablet will break up and dissolve quickly. You may take the tablet with or without water.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • After you remove a rapidly disintegrating tablet (Reditab®) from the package, use it right away by putting the tablet on your tongue. The tablet will break up and dissolve quickly. You may take the tablet with or without water.

  • Your doctor will tell you how much of this medicine to use and how often. Do not use more medicine or use it more often than your doctor tells you to.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Oral routeYou may take this medicine with or without food.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Chew the chewable tablet thoroughly before you swallow it. You may also let the chewable tablet melt slowly in your mouth.

  • Swallow the tablet whole with a full glass of water. Do not chew, crush, or break it.

  • Oral routeYou may take this medicine with or without food.

  • Swallow the tablet whole with a full glass of water. Do not chew, crush, or break it.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Chew the chewable tablet thoroughly before you swallow it. You may also let the chewable tablet melt slowly in your mouth.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • It is best to take the tablet with water.

  • Shake the oral liquid well before using. Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Take the oral disintegrating tablet on an empty stomach.

  • Make sure your hands are dry before you handle the disintegrating tablet. Peel back the foil from the blister pack, then remove the tablet. Do not push the tablet through the foil. Place the tablet in your mouth. After it has melted, swallow or take a drink of water. Do not chew or break the tablet.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Make sure your hands are dry before you handle the disintegrating tablet. Peel back the foil from the blister pack, then remove the tablet. Do not push the tablet through the foil. Place the tablet in your mouth. After it has melted, swallow or take a drink of water. Do not chew or break the tablet.

  • It is best to take the tablet with water.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Shake the oral liquid well before using. Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Take the oral disintegrating tablet on an empty stomach.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup. You might need to shake the oral liquid medicine just before measuring the dose. Follow the directions on the label.

  • Swallow the extended-release capsule or extended-release tablet whole. Do not crush, break, or chew it.

  • Swallow the extended-release capsule or extended-release tablet whole. Do not crush, break, or chew it.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup. You might need to shake the oral liquid medicine just before measuring the dose. Follow the directions on the label.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Your doctor will tell you how much to take and how often. You should not use more of this medicine than your doctor ordered.

  • Claritin-D 24 Hour® extended-release tablets should only be taken once a day.

  • Take the tablet with a full glass of water.

  • Swallow the tablet whole. Do not break, crush, or chew.

  • It is best to take this medicine on an empty stomach.

  • Drink plenty of liquids while taking this medicine.

  • It is best to take this medicine on an empty stomach.

  • Swallow the tablet whole. Do not break, crush, or chew.

  • Drink plenty of liquids while taking this medicine.

  • Your doctor will tell you how much to take and how often. You should not use more of this medicine than your doctor ordered.

  • Claritin-D 24 Hour® extended-release tablets should only be taken once a day.

  • Take the tablet with a full glass of water.

  • Tablet: Swallow it whole. If you need a lower dose, your doctor may tell you to break the tablet in half.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Your doctor will tell you how much medicine to use. Do not use more than directed. This medicine is usually taken in the evening.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Oral liquid: Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Oral liquid: Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Your doctor will tell you how much medicine to use. Do not use more than directed. This medicine is usually taken in the evening.

  • Tablet: Swallow it whole. If you need a lower dose, your doctor may tell you to break the tablet in half.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

What to do if you miss a dose of Allergy Relief

  • You should not use two doses at the same time.

  • Skip the missed dose if it is almost time for your next regular dose.

  • Take your medicine as soon as possible unless it is almost time for your next dose. If you are taking Claritin-D 24 Hour®, you should only take one dose a day.

  • If you are using this medicine on a regular schedule: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Oral routeAsk your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • The liquid medicine may be kept in the refrigerator. Do not freeze.

  • Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • If you miss a dose or forget to take your medicine, take it as soon as you can. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose.

  • Do not use extra medicine to make up for a missed dose.

  • Keep all medicine out of the reach of children and never share your medicine with anyone.

  • You should not use two doses at the same time.

  • May be taken as soon as possible.

  • Skip the missed dose if it is almost time for your next dose.

  • Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Allergy Relief contraindications

  • You should not use this medicine if you have ever had an allergic reaction to diphenhydramine. This medicine should not be given to women who are breast feeding. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years old. Using these medicines in very young children might cause serious or possibly life-threatening side effects.

  • You should not use this medicine if you have had an unusual or allergic reaction to Chlor-Trimeton®, Dimetane®, Polaramine®, Actifed®, Tavist® or other antihistamines. You should not use this medicine if you have taken Furoxone®, Marplan®, Eutonyl®, Nardil®, or Matulane® within the last 2 weeks. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years old. Using these medicines in very young children might cause serious or possibly life-threatening side effects.

  • You should not use this medicine if you have had an allergic reaction to loratadine. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years old. Using these medicines in very young children might cause serious or possibly life-threatening side effects.

  • You should not use this medicine if you have had an allergic reaction to cetirizine or hydroxyzine (Atarax®, Vistaril®). Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 2 years old. Using these medicines in very young children might cause serious or possibly life-threatening side effects.

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to fexofenadine or terfenadine.

  • You should not use this medicine if you have had an allergic reaction to chlorpheniramine. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years old. Using these medicines in very young children might cause serious or possibly life-threatening side effects.

  • You should not use this medicine if you have had an allergic reaction to loratadine or pseudoephedrine. If you have glaucoma, problems urinating, severe high blood pressure, or heart disease or if you have taken a type of medicine called an MAO inhibitor (such as Marplan®, Parnate®, or Nardil®) in the past 14 days, then you should not take this medicine. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years old. Using these medicines in very young children might cause serious or possibly life-threatening side effects.

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to levocetirizine or cetirizine, or if you have end-stage kidney disease or receiving hemodialysis treatment.

Allergy Relief warnings

  • Make sure your doctor knows if you are pregnant or breastfeeding, or if you have an enlarged prostate, or trouble urinating. Tell your doctor if you have glaucoma, or a breathing problem such as emphysema, bronchitis, or asthma. Make sure your doctor knows if you have any other allergies.

  • This medicine may make you dizzy or drowsy. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.

  • This medicine might contain phenylalanine (aspartame). This is a concern if you have a disorder called phenylketonuria (a problem with amino acids). If you have this condition, talk to your doctor before using this medicine.

  • Pain when urinating, or change in how much or how often you urinate.

  • This medicine may cause drowsiness. If it does, avoid driving a car or using machinery.

  • This medicine may cause a skin rash when you are out in the sun. Use a sunscreen when you are outside, and try not to spend long periods in direct sunlight.

  • Ask your doctor before taking this medicine if you are pregnant or breastfeeding, or if you have glaucoma or trouble urinating.

  • This medicine might contain phenylalanine. This is only a concern if you have a disorder called phenylketonuria (a problem with amino acids). Talk to your doctor before using this medicine.

  • Side effects of this medicine may occur more frequently in young children and older adults.

  • Some antihistamine syrups contain alcohol.

  • Make sure your doctor knows if you are pregnant or breastfeeding, or if you have liver disease or kidney disease.

  • Extreme weakness

  • Fast or irregular heartbeat

  • Uncontrolled movements of the head, neck, eyes or tongue

  • This medicine may make you dizzy or drowsy. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.

  • Talk with your doctor before taking this medicine if you are pregnant or breast feeding.

  • Check with your doctor before using this medicine if you have kidney disease or liver disease.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease or a condition called phenylketonuria (PKU).

  • This medicine may make you dizzy or drowsy. Do not drive or doing anything else that could be dangerous until you know how this medicine affects you.

  • This medicine may make you drowsy. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.

  • Make sure your doctor knows if you are pregnant or breastfeeding.

  • Make sure your doctor knows if you have glaucoma, problems with urination, an enlarged prostate, kidney disease, an ulcer or other digestion problem, or a breathing problem such as chronic bronchitis, asthma, or emphysema.

  • Do not give this medicine to a child under 6 years old unless the child's doctor says it is okay.

  • If you are pregnant or breastfeeding, talk to your doctor before taking this medicine.

  • Make sure your doctor knows if you have liver disease, diabetes, thyroid problems, high blood pressure, kidney disease, or prostate problems before taking this medicine.

  • You should not use Claritin-D 24 Hour® tablets if you have trouble swallowing tablets. The tablet could get stuck as it passes down toward your stomach.

  • This medicine may make you drowsy or dizzy. Be careful if you are driving or using machinery.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • This medicine may make you tired or drowsy. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.

  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, spinal cord lesions, an enlarged prostate, or trouble urinating.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Allergy Relief interactions

  • Do not drink alcohol while you are using this medicine.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol.

  • Some medicines can affect how levocetirizine works. Tell your doctor if you are using ritonavir or theophylline.

  • Avoid drinking alcohol while taking this medicine.

  • You should not use other antihistamines or decongestants while taking this medicine, including those you buy without a doctor's prescription.

  • Make sure your doctor knows if you are also taking medicine for high blood pressure, ketoconazole (Nizoral®), cimetidine (Tagamet®), or erythromycin (E.E.S.®, ERYC®, Ery-Tab®, and others).

  • This medicine may make you drowsy or dizzy. Be careful if you are driving or using machinery.

  • Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol.

  • Do not drink alcohol while you are using this medicine.

  • This medicine may make you drowsy. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.

  • Do not give this medicine to a child under 6 years old unless the child's doctor says it is okay.

  • Some medicines and foods can affect how fexofenadine works. Tell your doctor if you are also using any of the following: ErythromycinKetoconazole

  • If you use an antacid that contains aluminum or magnesium, take it at least 15 minutes before or after you take fexofenadine.

  • Do not eat grapefruit or drink grapefruit, orange, or apple juice while you are using this medicine.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Make sure your doctor knows if you are also using theophylline.

  • Avoid drinking alcohol while using this medicine.

  • Make sure your doctor knows if you are also using other medicines that might make you sleepy such as cold or allergy medicines, muscle relaxants, tranquilizers, sleeping pills, or strong pain killers.

  • Make sure your doctor knows if you are pregnant or breastfeeding, or if you have liver disease or kidney disease.

  • Avoid drinking alcohol while taking this medicine.

  • Avoid taking this medicine with other antihistamines.

  • Make sure your doctor knows if you are taking any medicine that makes you sleepy, such as sedatives, narcotic pain killers, or antidepressants while you are receiving this medicine.

  • Some antihistamine syrups contain alcohol.

  • This medicine may cause drowsiness. If it does, avoid driving a car or using machinery.

  • This medicine may cause a skin rash when you are out in the sun. Use a sunscreen when you are outside, and try not to spend long periods in direct sunlight.

  • Make sure your doctor knows if you are using an MAO inhibitor (MAOI) such as Eldepryl®, Marplan®, Nardil®, or Parnate®.

  • Ask your doctor before you use any other products that have diphenhydramine in it. This includes medicines that you use on your skin.

  • Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol.

  • Do not drink alcohol while you are using this medicine.

Allergy Relief side effects

Serious Side Effects

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Decrease in how much or how often you urinate, painful urination

  • Dizziness or drowsiness

  • Fainting or passing out

  • Dry mouth or nose

  • Wheezing or trouble breathing

  • Fast, pounding, or irregular heartbeat

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Severe tiredness.

  • Dry mouth.

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Skin or whites of your eyes turn yellow.

  • Allergic reaction: Itching or hives, swelling in face or hands, swelling or tingling in the mouth or throat, tightness in chest, trouble breathing

  • Extreme weakness

  • Fast or irregular heartbeat

  • Uncontrolled movements of the head, neck, eyes or tongue

  • Nervousness

  • Red, irritated eyes

  • Severe drowsiness, clumsiness, or confusion

  • Faintness

  • Fast heartbeat

  • Shortness of breath or trouble breathing

  • Nervousness

  • Changes in vision, such as trouble focusing

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Hallucinations (seeing things that are not really there).

  • Lightheadedness or fainting.

  • Pain when urinating, or change in how much or how often you urinate.

  • Upset stomach.

  • Thick mucus in your nose or throat.

Less Serious Side Effects

  • Nervousness or excitability, especially in children.

  • Clumsiness.

  • Dry nose, mouth, or throat.

  • Thick mucus in your nose or throat.

  • Upset stomach.

  • Constipation, nausea, or stomach upset.

  • Nervousness

  • Irritability or excitement

  • Drowsiness or dizziness

  • Upset stomach

  • Reduced appetite

  • Changes in vision, such as trouble focusing

  • Dry mouth

  • Red, irritated eyes

  • Nervousness

  • Drowsiness

  • Cough, sore throat, hoarseness

  • Headache

  • Drowsiness or dizziness.

  • Dry mouth.

  • Nausea, loss of appetite.

  • Increased energy, restlessness, nervousness (more common in children).

  • Dry mouth.

  • Headache

  • Dizziness or drowsiness

  • Dry mouth or nose

  • Trouble sleeping

  • Nervousness

  • Diarrhea, vomiting

  • Dry mouth

  • Tiredness, sleepiness, drowsiness, weakness

Allergy Relief News & Research

Drug Info

Can you take Claritin and Zyrtec together?

Apr 15, 2024  by Keith Gardner, R.Ph.
Claritin and Zyrtec belong to the same drug class. They should not be taken together because of their similar mechanisms of action. Learn more here.
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Drug Info

Can you buy prednisone over the counter?

Apr 14, 2024  by Karen Berger, Pharm.D.
Prednisone is a corticosteroid that is only available with a prescription. Learn what medications are available over the counter for inflammation or allergies.
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Health Education

Can allergies make you cough?

Apr 12, 2024  by Heidi Borst
Discover how to identify and treat allergic coughs, including lifestyle changes and medications. Learn the signs that distinguish it from other coughs.
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Health Education

Do allergies cause sore throat?

Apr 1, 2024  by Lacey Muinos
Cold and flu are common causes of sore throat, but can allergies cause sore throat too? Postnasal drip, a classic allergy symptom, can lead to throat irritation.
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Health Education

Best allergy medicine for a runny nose

Feb 8, 2024  by Racheal Ede
The best allergy medicine for a runny nose depends on a variety of factors, but options include antihistamines, decongestants, and steroids.
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Drug Info

What are the side effects of Zyrtec in older adults?

Jan 25, 2024  by Sarah Bradley
Zyrtec is safer than Benadryl but can still cause fatigue and sleepiness, increasing the risk of falls and injury in older adults
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Health Education

What causes clogged ears? Related conditions and treatments

Jan 10, 2024  by Jennifer Larson
The most common causes of clogged ears are allergies, ear infections, and upper respiratory infections.
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Drug Info

Does Zyrtec make you drowsy?

Dec 15, 2023  by Leandra Beabout
Zyrtec causes drowsiness in up to 14% of people. Factors that affect your risk of drowsiness include dosage, time of day, alcohol use, and other medications.
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Health Education

How to relieve sinus pressure

Dec 6, 2023  by Sarah Bradley
Intranasal sprays (Flonase, Nasonex, Nasacort, Afrin, saline rinses) are the fastest ways to relieve sinus pressure, but other treatments are available.
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