Dextromethorphan + Diphenhydramine

Fixed-dose combination

This page lists brands whose active-ingredient set is exactly the combination below. It is identity information only — a fixed-dose combination is not the same product as its single ingredients, and the brand names are not interchangeable across markets.

Not medical advice. Check the pack and the exact composition before comparing products; ask a pharmacist if unsure.

Active ingredients

Dextromethorphan dextromethorphan
Diphenhydramine diphenhydramine

Brands with this exact combination

Brand	Composition & strength	Manufacturer
MERO INJECTION 5MGHK TW	injection ×2 Dextromethorphan + Diphenhydramine unknown Dextromethorphan tablet Dextromethorphan 30 mg tablet Dextromethorphan 5 mg	信東生技股份有限公司
Diphenhydramine 10mg/5ml / Dextromethorphan 6.65mg/5ml oral solution sugar freeGB	10 mg/5 mL / 6.65 mg/5 mL	Thornton & Ross Ltd
dextrometorfano + difenhidraminaES	15 mg/5 mL / 1.33 mg/1 mL / 2 mg/1 mL	Laboratorios Cinfa S.A.
dextromethorphan + diphenhydramineES	15 mg/5 mL / 1.33 mg/1 mL / 2 mg/1 mL	Laboratorios Cinfa S.A.
Covonia night time formula oral solutionGB	liquid Dextromethorphan 6.65 mg/5 mL + Diphenhydramine 10 mg/5 mL	Thornton & Ross Ltd
Covonia Hot Dose Cough & Cold syrupGB	liquid Dextromethorphan 6.65 mg/5 mL + Diphenhydramine 10 mg/5 mL	Thornton & Ross Ltd
BISOLVON ANTITUSIVO COMPOSITUMES	liquid Dextromethorphan 15 mg/5 mL + Diphenhydramine	Opella Healthcare Spain S.L.
CINFATOS NOCHEES	liquid Dextromethorphan 1.33 mg/1 mL + Diphenhydramine 2 mg/1 mL	Laboratorios Cinfa S.A.
BENADREXMX	liquid Dextromethorphan + Diphenhydramine	Janssen-Cilag, S.A. DE C.V.
"信東"美露針注射液5毫克TW	injection Dextromethorphan + Diphenhydramine	信東生技股份有限公司
"信東"美露針注射液１０毫克TW	injection Dextromethorphan + Diphenhydramine	信東生技股份有限公司

Same combination in other markets

These markets record products with the same active-ingredient combination. Identity only — not a recommendation that products are interchangeable.

GB · Covonia Hot Dose Cough & Cold syrup; Covonia night time formula oral solution · 2 products · record
ES · BISOLVON ANTITUSIVO COMPOSITUM; CINFATOS NOCHE · 2 products · record

See warnings for these ingredients

Source & licence: built from the same regulator data as the ingredient pages (openFDA, dm+d, CIMA, COFEPRIS, PBS/TGA, Health Canada DPD, NHSA). Facts only; see the licence register.