ERYTHROMYCIN 400 MG/5 ML SUSP

What it is

ERYTHROMYCIN 400 MG/5 ML SUSP is how the CMS NADAC file names this product. The FDA NDC Directory lists it as “erythromycin” and “erythromycin ethylsuccinate”, as its NDCs’ listings variously write the nonproprietary name.

FDA gives its dosage form as “suspension” and “granule, for suspension” and its route as oral.

FDA lists 4 labelers (the companies named on the label) for its NDCs, among them Wilshire Pharmaceuticals, Amneal Pharmaceuticals NY LLC and ANI Pharmaceuticals, Inc.

FDA lists it under 2 Established Pharmacologic Classes: Macrolide and Macrolide Antimicrobial.

The NADAC file of 2026-10-14 prices it under 5 NDCs (National Drug Codes).

NADAC classes it as a generic drug (rate-setting class G), and does not mark it as sold over the counter.

What pharmacies pay

Pharmacies pay $174.36 for 100 mL (100 × $1.74359 per ML, rounded to the cent), by the CMS NADAC file of 2026-10-14; that price took effect on 2026-09-23. That is what pharmacies pay their suppliers, not what they charge you.

NADAC’s explanation codes for it: 1, calculated from the most recently completed pharmacy survey; 5, calculated based on package size; 6, the CMS Covered Outpatient Drug Product File S/I/N drug category was not applied when grouping drugs for the calculation.

What NADAC measures · NADAC explanation codes

All 5 NDCs

• 52536-0130-13 · Wilshire Pharmaceuticals · $1.74359 per ML · eff. 2026-09-23 filed
• 60219-1504-02 · Amneal Pharmaceuticals NY LLC · $1.74359 per ML · eff. 2026-09-23 filed
• 62559-0631-01 · ANI Pharmaceuticals, Inc. · $1.74359 per ML · eff. 2026-09-23 filed
• 69238-1504-02 · Amneal Pharmaceuticals NY LLC · $1.74359 per ML · eff. 2026-09-23 filed
• 75834-0294-01 · Nivagen Pharmaceuticals, Inc. · $1.74359 per ML · eff. 2026-09-23 filed

Other strengths, forms and brands

14 other products in the NADAC file share an FDA nonproprietary name with ERYTHROMYCIN 400 MG/5 ML SUSP.

Part D is one average per brand and generic name, over every strength and form.

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-04-22, 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

Medicare Part D · DSD_PTD_RY26_P04_V10_DY24_BGM.csv · eff. 2024-01-01 to 2024-12-31 · as of 2026-06-25 · retrieved 2026-10-18

Compared with its class

The middle of its 5 NDCs’ NADAC prices is $1.74359 per ML filed.

Of the 7 other products in FDA’s Macrolide Antimicrobial class priced per ML, 1 has a higher middle NADAC price and 6 a lower one. The one in the middle is ERYTHROMYCIN 200 MG/5 ML SUSP, at $0.91229 per ML filed (eff. 2026-09-23).

Prices are compared per unit, whatever the strength or dose, and a class is not a list of substitutes.

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

How the class comparison works

What Medicare paid

We don’t know yet; the card above says why.

Which Medicare figure OpenBill compares · How Part D is matched · How Part B is matched

What to ask at the counter

None of these figures is your price: what you pay depends on your pharmacy, your insurance, coupons and discounts.

• What is your cash price for 100 mL? Is it lower than what I would pay through my insurance?
• How much is in the package I am getting? This page uses 100 mL; your package may hold a different amount.
• These are questions about price, not medical advice. Do not change or stop a medicine without talking to your prescriber or pharmacist.