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S21 (Penicillin V 500 mg)

Pill imprint S21 has been identified as Penicillin V potassium 500 mg.

Penicillin v potassium is used in the treatment of bacterial infection; fusospirochetosis, trench mouth; skin or soft tissue infection; clostridial infection; lyme disease, erythema chronicum migrans (and more), and belongs to the drug class natural penicillins. There is no proven risk in humans during pregnancy. Penicillin v potassium 500 mg is not a controlled substance under the Controlled Substance Act (CSA).

Penicillin V potassium 500 mg S21
Penicillin V potassium 500 mg S21
Penicillin V potassium
500 mg
Elliptical / Oval
Prescription only
Drug Class:
Natural penicillins
Pregnancy Category:
B - No proven risk in humans
CSA Schedule:
Not a controlled drug
Dava Pharmaceuticals Inc.
National Drug Code (NDC):
Inactive Ingredients:
magnesium stearate
microcrystalline cellulose
sodium lauryl sulfate
polyethylene glycol
Other Manufacturers / Repackagers:
NDC CodeManufacturer / Repackager
54569-2710 A-S Medication Solutions, LLC (repackager)
33261-0138 Aidarex Pharmacuticals, LLC (repackager)
16590-0183 Stat RX USA LLC (repackager)
21695-0318 Rebel Distributors Corp (repackager)
43063-0096 PDRX Pharmaceuticals Inc (repackager)
53002-0202 Pharmedix (repackager)
60429-0148 Golden State Medical Supply (repackager)

Note: Inactive ingredients may vary.

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Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date, and complete, but no guarantee is made to that effect. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

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