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The pill imprinted “C20”

The imprint C20 appears on 3 different products in the FDA data: Acetaminophen 500 mg, Cialis 20 mg, Sympazan 20 mg. Match the colour and shape below to your pill.

By the pharmaranks editorial teamReviewed against the U.S. FDA / DailyMed (Structured Product Labeling) sourcesHow we research

The pictures are diagrams drawn from the shape, colour and imprint on the FDA label — not photographs of the actual tablet. Identify by the imprint, and confirm with a pharmacist.

  • C;20
    Acetaminophen500 mg
    Imprint C;20 · White · Round · 12 mm · Tablet
    NDC 10135-829
    Imprint match
  • C;20
    Cialis20 mg
    Imprint C;20 · Yellow · Oval · 12 mm · Tablet, film coated
    Generic: Tadalafil
    NDC 0002-4464
    Imprint match
  • C20
    SYMPAZAN20 mg
    Imprint C20 · White · Rectangle · Film
    Generic: clobazam
    NDC 10094-220
    Imprint match
  • What else is in this pill

    The inactive ingredients — fillers, binders, coatings and colours — exactly as this label declares them.

    Full inactive-ingredient list (5)

    Pregelatinized starch, Povidone k 30, Sodium starch glycolate, Inc. new castle, De 19720 rev. 01/26 aa

    This is what the label lists, and nothing more. An ingredient not appearing here does not mean the product is free of it — formulations differ between manufacturers and between generic versions of the same pill, and “gluten-free” or “dye-free” is a claim only the manufacturer can make. If you have coeliac disease or a diagnosed allergy, confirm with the pharmacist against the pack in front of you.

    Before you rely on this

    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.

    Wrong pill? Search by imprint, colour and shape in the full pill identifier.

    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.