What is Penicillin V Potassium: Uses, Warnings & Interactions

Updated Jan. 13, 2021  •  Published Dec. 30, 2020

Penicillin V Potassium overview

BRAND NAMES:

  • Truxcillin VK

Generic Names:

  • Penicillin V Potassium

Uses:

  • Treats or prevents bacterial infections. This medicine is an antibiotic.

Therapeutic Classes:

  • Antibiotic

Forms:

  • Liquid, Tablet, Capsule

How it’s taken:

  • By mouth

What is Penicillin V Potassium used for?

Penicillin V is an antibiotic used to treat various bacterial infections. Penicillin V has been used to treat infections of the throat, skin, teeth, and gums. Penicillin V is a generic antibiotic also available under various brand names. Penicillin V is typically used only for mild or moderate infections. In the past, penicillin V use was common, but newer antibiotics have widely replaced penicillin V.

What form(s) does Penicillin V Potassium come in

  • Liquid

  • Tablet

  • Capsule

What are common Penicillin V Potassium doses?

  • Tablet 250MG

  • Tablet 500MG

  • Bottle 100ML of 125MG/5ML

  • Bottle 200ML of 125MG/5ML

  • Bottle 100ML of 250MG/5ML

  • Bottle 200ML of 250MG/5ML

Common Penicillin V Potassium prescriptions

  • Penicillin V Potassium
    100ml of 125mg/5ml bottle

  • Penicillin V Potassium
    100ml of 250mg/5ml bottle

  • Penicillin V Potassium
    200ml of 125mg/5ml bottle

  • Penicillin V Potassium
    200ml of 250mg/5ml bottle

  • Penicillin V Potassium
    250mg tablet

  • Penicillin V Potassium
    500mg tablet

How to take Penicillin V Potassium

  • Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.

  • It is best to take this medicine on an empty stomach, 1 hour before or 2 hours after a meal.

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

  • Take all of the medicine in your prescription to clear up your infection, even if you feel better after the first few doses.

  • 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.

  • Tablets: Store at room temperature, away from heat, moisture, and direct light.

  • Oral liquid: Store in the refrigerator. Do not freeze. Discard any medicine you have not used after 14 days.

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

  • Oral liquid: Store in the refrigerator. Do not freeze. Discard any medicine you have not used after 14 days.

  • Take all of the medicine in your prescription to clear up your infection, even if you feel better after the first few doses.

  • Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.

  • Tablets: Store at room temperature, away from heat, moisture, and direct light.

  • It is best to take this medicine on an empty stomach, 1 hour before or 2 hours after a meal.

  • 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.

Penicillin V Potassium contraindications

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to any type of penicillin.

Penicillin V Potassium warnings

  • 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 asthma, allergies, kidney disease, liver disease, or digestion problems. Tell your doctor if you had an allergic reaction to a cephalosporin antibiotic.

  • This medicine can cause diarrhea. Call your doctor if the diarrhea becomes severe, does not stop, or is bloody. Do not take any medicine to stop diarrhea until you have talked to your doctor. Diarrhea can occur 2 months or more after you stop taking this medicine.

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

Penicillin V Potassium interactions

  • Some medicines and foods can affect how penicillin works. Tell your doctor if you also use methotrexate or warfarin.

  • Birth control pills, implants, or shots may not work while you are using penicillin. To keep from getting pregnant, use another form of birth control.

  • 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.

Penicillin V Potassium side effects

Serious Side Effects

  • Severe diarrhea, fever, stomach cramps

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

  • Blistering, peeling, red skin rash

Less Serious Side Effects

  • Black, hairy tongue

  • Mild diarrhea, nausea, vomiting, or upset stomach

  • Vaginal itching or discharge