GS TUSSIN DM 200-20 MG/20 ML

What it is

GS TUSSIN DM 200-20 MG/20 ML is how the CMS NADAC file names this product. The FDA NDC Directory lists it as dextromethorphan hydrobromide, guaifenesin, under the trade name “good sense tussin dm”.

FDA gives its dosage form as solution and its route as oral.

The labeler, the company named on the label, is L. Perrigo Company.

FDA lists it under 3 Established Pharmacologic Classes: Expectorant, Sigma-1 Agonist and Uncompetitive N-methyl-D-aspartate Receptor Antagonist.

The NADAC file of 2026-10-14 prices it under 2 NDCs (National Drug Codes).

NADAC classes it as a generic drug (rate-setting class G), and marks it as sold over the counter.

What pharmacies pay

Pharmacies pay $0.01 – $0.02 for 1 mL, depending on the NDC ($0.01477 to $0.02069 per ML), 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.

What NADAC measures · NADAC explanation codes

All 2 NDCs

• 00113-1725-26 · L. Perrigo Company · $0.02069 per ML · eff. 2026-09-23 filed
• 00113-1725-34 · L. Perrigo Company · $0.01477 per ML · eff. 2026-09-23 filed

Other strengths, forms and brands

9 other products in the NADAC file share the FDA nonproprietary name dextromethorphan hydrobromide, guaifenesin with GS TUSSIN DM 200-20 MG/20 ML.

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

Compared with its class

The middle of its 2 NDCs’ NADAC prices is $0.01477 per ML filed.

Of the 38 other products in FDA’s Expectorant class priced per ML, 30 have a higher middle NADAC price and 7 a lower one; 1 has the same. The one in the middle is TUSSIN DM 200-20 MG/20 ML LIQ, at $0.02069 per ML filed (eff. 2026-09-23).

Of the 63 other products in FDA’s Sigma-1 Agonist class priced per ML, 52 have a higher middle NADAC price and 10 a lower one; 1 has the same. The one in the middle is QC COUGH RELIEF 15 MG/5 ML LIQ, at $0.02263 per ML filed (eff. 2026-09-23).

Of the 63 other products in FDA’s Uncompetitive N-methyl-D-aspartate Receptor Antagonist class priced per ML, 52 have a higher middle NADAC price and 10 a lower one; 1 has the same. The one in the middle is QC COUGH RELIEF 15 MG/5 ML LIQ, at $0.02263 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 1 mL? Is it lower than what I would pay through my insurance?
• Which NDC (the 11-digit number on the package) is this? Pharmacies pay $0.01477 to $0.02069 per ML for this product, depending on the NDC.
• It is sold over the counter, so shelf prices vary from store to store: what does it cost per unit here?
• How much is in the package I am getting? This page uses 1 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.