531 Pill — GRAY CAPSULE, 9mm — Minocycline

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Imprint	531
Colour	GRAY
Shape	CAPSULE
Size	9
Strength	MINOCYCLINE HYDROCHLORIDE 45 mg
Dosage form	Tablet, Extended Release
Manufacturer	Cadila Healthcare Limited
NDC	70771-1138
Schedule	—
Availability	Prescription only
Ingredients	MINOCYCLINE HYDROCHLORIDE[MINOCYCLINE]

What does this imprint mean?

The imprint "531" is a code stamped or printed on the tablet or capsule by the manufacturer, used to identify the drug, its strength and the maker.

Active ingredient

Minocycline

Uses and warnings

BOXED WARNING: "MINOCYCLINE HYDROCHLORIDE TABLETS, LIKE OTHER TETRACYCLINE-CLASS ANTIBIOTICS, CAN CAUSE FETAL HARM WHEN ADMINISTERED TO A PREGNANT WOMAN," with use during tooth development (last half of pregnancy through age 8) causing permanent tooth discoloration (yellow-gray-brown) and enamel hypoplasia. Other key warnings: photosensitivity reactions, CNS effects (dizziness, vertigo), Clostridium difficile-associated diarrhea (CDAD), Drug Rash with Eosinophilia and Systemic Symptoms (DRESS), and pseudotumor cerebri (benign intracranial hypertension), which can occur with concomitant isotretinoin and may cause permanent vision loss.

Minocycline Hydrochloride Tablets are indicated for infections caused by susceptible organisms, including rickettsial infections (Rocky Mountain spotted fever, typhus fever, Q fever), respiratory tract infections due to Mycoplasma pneumoniae, sexually transmitted infections (chlamydia, uncomplicated gonorrhea, syphilis), skin/soft-tissue and urinary tract infections, and as adjunctive therapy in severe acne; it is also used to eliminate the meningococcal carrier state. As with other antibacterials, the label states minocycline "should be used to treat only infections that are proven or strongly suspected to be caused by susceptible bacteria."

Read the full drug profile →

How to identify this pill

• Check the imprint matches exactly: "531".
• Confirm the colour (GRAY) and shape (CAPSULE).
• Compare the size (9) against a ruler if possible.
• When in doubt, confirm with a pharmacist before taking any medication.

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