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erythromycin

Erythromycin is a macrolide used to treat Acne Vulgaris, Campylobacter Infections, Chancroid, Chlamydia Infections.

Macrolide · by Pharmafair

Generic of Pce

Not yet rated· sourced from the FDA label
Rated against independent regulatory sources·Last updated June 7, 2026·How we rate
Verified againstopenFDANIH DailyMedRxClass
$1.88 /g
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Key facts

Active ingredient
Erythromycin
Drug class
Macrolide
Form
Capsule, delayed release, Topical, Tablet, delayed release, Tablet
Strength
Erythromycin 5MG/GM
Type
Prescription (Rx)
Brand or generic
Generic
Manufacturer
Pharmafair
What the pharmacy pays
~$1.88 per gm — not your price
FDA application
ANDA062481
Availability
Discontinued (per FDA)

Storing Erythromycin, and how long it keeps

Quoted from this product’s own FDA label. Storage belongs to the product and its device, not to the drug in general — a pen and a tablet of the same medicine are kept completely differently.

  • USP, 200 mg/5 mL and 400 mg/5 mL must be stored at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature] and used within 35 days; refrigeration is not required.

Drug class

How this class works, per Macrolides - StatPearls - NCBI Bookshelf.

May treat (source: NIH RxClass)

Dosage forms

Capsule, delayed release, Topical, Tablet, delayed release and Tablet

The forms currently marketed in the U.S., per the FDA National Drug Code Directory.

Ways to save

Ask for the generic

Same active ingredient, far cheaper. Is there a generic? →

Request a 90-day supply

Bulk fills usually lower the per-dose price vs monthly refills.

Use copay cards

Manufacturer copay cards & patient-assistance programs — especially for brand drugs.

Compare alternatives

A same-class option may cost less. See alternatives →

Frequently asked questions

What does Erythromycin treat?
Erythromycin (Erythromycin) may be used to treat acne vulgaris, campylobacter infections, chancroid, chlamydia infections, erythrasma, gastroenteritis, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
How does Erythromycin work?
Erythromycin is a macrolide. Macrolide antibiotics latch onto the bacterial ribosome's 50S subunit, the cell's protein-building machine, and block the growing protein chain from being assembled. Without the proteins they need, the bacteria stop multiplying, which lets the immune system clear the infection.
How much does Erythromycin cost?
Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $1.88 per gm, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins.
Is there a coupon or discount for Erythromycin?
pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Erythromycin. To pay less, Erythromycin is already a generic — usually the lowest-cost version — so the main levers are comparing cash prices between pharmacies and using a pharmacy discount-card service. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
Who makes Erythromycin?
Erythromycin is marketed by Pharmafair. You can see Pharmafair's full profile, rating, and other products on pharmaranks.
Is Erythromycin a brand-name or generic drug?
Erythromycin is a generic medication; its active ingredient is Erythromycin. Generics contain the same active ingredient as the brand-name original and are usually lower cost.
Is Erythromycin available over the counter?
No. Erythromycin is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
What forms does Erythromycin come in?
Erythromycin is currently marketed as capsule, delayed release, topical, tablet, delayed release and tablet, per the FDA's National Drug Code Directory.
What class of drug is Erythromycin?
Erythromycin is classified as macrolide, macrolide antimicrobial, per the FDA's Established Pharmacologic Class.
Is Erythromycin FDA-registered?
Erythromycin is on record with the U.S. FDA under application number ANDA062481. You can verify this on its official FDA label.

Information is sourced from public FDA regulatory data. Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.

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