The imprint 537 appears on 2 different products in the FDA data: TRAMADOL HYDROCHLORIDE 300 mg, TRAMADOL HYDROCHLORIDE AND ACETAMINOPHEN 37.5 mg / 325 mg. Match the colour and shape below to your pill.
By the pharmaranks editorial team·Reviewed against the U.S. FDA / DailyMed (Structured Product Labeling) sources·How we research
TRAMADOL HYDROCHLORIDE300 mg
Imprint 537 · White · Round · 13 mm · Tablet, extended release
A pill’s appearance varies between manufacturers and generic versions, imprints wear off, and two different drugs can share an imprint. Everything here is transcribed straight from the FDA’s DailyMed labels — we do not alter or infer it — but treat any identification as a starting point and confirm with a licensed pharmacist before taking or discarding a medication.
Source: the U.S. National Library of Medicine’s DailyMed Structured Product Labeling — the FDA-required drug labels. Imprint, colour, shape, size and score are transcribed, not inferred. This is reference information, not medical advice.