August 29, 2016
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Penicillin VK

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Penicillin VK

Penicillin V Potassium
Tablets, USP - 250 mg and 500 mg

Penicillin V Potassium
for Oral Solution, USP - 125 mg/5 mL and 250 mg/5 mL Rx Only

To reduce the development of drug-resistant bacteria and maintain the effectiveness of Penicillin V Potassium Tablets, Penicillin V Potassium for Oral Solution and other antibacterial drugs, Penicillin V Potassium Tablets and Penicillin V Potassium for Oral Solution should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria.

DRUG DESCRIPTION

Penicillin V is the phenoxymethyl analog of penicillin G. Penicillin V potassium is the potassium salt of penicillin V. Penicillin V Potassium is designated chemically as 4-Thia-1-azabicyclo [3.2.0] heptane-2carboxylic acid, 3,3-dimethyl-7-oxo- 6-[(phenoxyacetyl)amino]-, monopotassium salt, [2S-(2?,5?,6?)]-. It has the following chemical structure:

enicillin V Potassium - Structural Formula Illustration

The molecular formula is C16H17KN2O5S, and the molecular weight is 388.48.

Each tablet contains Penicillin V Potassium equivalent to 250 mg or 500 mg (400,000 or 800,000 units) of penicillin V.

Each Penicillin V Potassium tablet, USP, 250 mg contains 0.73 mEq (28.2 mg) of Potassium and each Penicillin V potassium tablet, USP, 500 mg contains 1.46 mEq (56.4 mg) of Potassium.

Each tablet also contains the following inactive ingredients: lactose, NF; magnesium stearate, NF; microcrystalline cellulose, NF; polyethylene glycol, NF; povidone, USP; sodium laurel sulfate, NF.

Each 5 mL when reconstituted as directed contains Penicillin V Potassium equivalent to 125 mg or 250 mg (200,000 or 400,000 units) of Penicillin V.

Each 5 mL of reconstituted Penicillin V Potassium for Oral Solution, USP, 125 mg per 5 mL contains 0.42 mEq (16.4 mg) of Potassium. Each 5 mL of reconstituted Penicillin V Potassium for Oral Solution, USP, 250 mg per 5 mL contains 0.85 mEq (32.8 mg) of Potassium.

Each 5 mL of reconstituted suspension also contains the following inactive ingredients: aspartame, NF; citric acid, USP; FD&C Red No. 40; flavors; primary taste modifier; saccharin sodium, USP; silicon dioxide, NF; sodium citrate, USP; sodium propionate, NF; sucrose, NF.

Last reviewed on RxList: 8/5/2016
This monograph has been modified to include the generic and brand name in many instances.

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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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