Comparing Erythromycin vs Penicillin V Potassium

View side-by-side comparisons of medication uses, ratings, cost, side effects and interactions.
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Erythromycin

Penicillin v potassium

Prescribed for Bronchitis, Bacterial Endocarditis Prevention, Bowel Preparation, Bartonellosis, Bullous Pemphigoid, Campylobacter Gastroenteritis, Chancroid, Chlamydia Infection, Dental Abscess... View more

Prescribed for Bacterial Infection, Fusospirochetosis - Trench Mouth, Clostridioides difficile Infection, Cutaneous Bacillus anthracis, Lyme Disease - Erythema Chronicum Migrans, Otitis Media... View more

Prescription only

Pricing and Coupons

* Prices are without insurance

Quantity	3 tablet
Dosage	250 mg
Per Unit^*	$12.91
Cost^*	$38.74

View all erythromycin prices

Quantity	6 tablet
Dosage	500 mg
Per Unit^*	$2.03
Cost^*	$12.17

View all penicillin v potassium prices

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Generic Availability

Yes (this medicine)

Dosage Form(s) Available

Oral delayed release capsule
Oral delayed release tablet
Oral granule for reconstitution
Oral suspension
Oral tablet

Oral powder for reconstitution
Oral tablet

Brand Names

E-Mycin, E.E.S. Granules, E.E.S.-200, E.E.S.-400, E.E.S.-400 Filmtab, Ery-Tab, Eryc, EryPed, Erythrocin, Erythrocin Lactobionate, Erythrocin Stearate Filmtab, Erythrocot, PCE Dispertab, Wyamycin S View more Penicillin VK

Half Life

The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value.

2 hours

1 hour

CSA Schedule**

View glossary of terms.

Not a controlled drug

Is not subject to the Controlled Substances Act.

Not a controlled drug

Is not subject to the Controlled Substances Act.

Pregnancy Category

Category B No proven risk in humans

See the full Pregnancy Warnings document.

Category B No proven risk in humans

See the full Pregnancy Warnings document.

Drug Interactions

A total of 595 drugs are known to interact with erythromycin:

178 major drug interactions (518 brand and generic names)
361 moderate drug interactions (1541 brand and generic names)
56 minor drug interactions (280 brand and generic names)

A total of 36 drugs are known to interact with penicillin v potassium:

4 major drug interactions (17 brand and generic names)
26 moderate drug interactions (213 brand and generic names)
6 minor drug interactions (33 brand and generic names)

Alcohol/Food/Lifestyle Interactions

Food decreases the levels of erythromycin in your body. Take erythromycin on an empty stomach at... View more

No known alcohol/food interactions. This does not necessarily mean no interactions exist. Always consult your healthcare provider.

Disease Interactions

First Approval Date

June 24, 1964

January 13, 1958

WADA Class

View World Anti-Doping Agency classifications.

N/A

More Information

Consumer Resources

Professional Resources

Related Treatment Guide

** The Controlled Substances Act (CSA) schedule information displayed applies to substances regulated under federal law. There may be variations in CSA schedules between individual states.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer