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Home / Medicines A–Z / Zinc

Zinc

Leg Cramps*.

Sold without prescription in some countries Oral Safety alerts on record

How to use Zinc

What the official label says. If a doctor prescribed it, follow the prescription. Your pack's leaflet comes first if it is different.

Who it is for

Leg Cramps*

How to take it and how often

Adults and children: At the onset of symptoms, dissolve 5 pellets under the tongue 3 times a day until symptoms are relieved or as directed by a doctor.

Possible side effects

Symptoms persist for more than 3 days or worsen

Pregnancy and breastfeeding

If pregnant or breast-feeding ask a health professional before use

If you miss a dose

Take it when you remember, unless it is nearly time for the next dose. Then skip the missed one. Never take two doses at once to make up for it. Check your leaflet, as some medicines are different.

Remind me to take it Full official label
From the official U.S. FDA label for this active ingredient. Your pack may have a different strength, so always read its leaflet. If a doctor prescribed it, follow the prescription. Ask a pharmacist if you are unsure. Label dated 2023-07-20.

Brands around the world

Products with Zinc as the active ingredient. Names differ between countries.

Zincum Metallicum

Safety alerts and recalls

Tri-Immune Boost (Glutathione: 200 mg, Ascorbic Acid: 200 mg, Zinc: 2.5 mg), 30 mL vial, Rx only, Centric Compounding, 7447 Harwin Dr. Suite 111, Houston, TX 77036U.S. FDA Not Yet Classified
27 Jul 2026 · Centric Compounding LLC · OngoingMicrobial Contamination of Sterile Products - out of specifications results were obtained for bacterial endotoxin.
Sterile EYE DROPS AC (tetrahydrozoline HCl 0.05%, zinc sulfate 0.25%), 0.5 fl. oz. (15 mL) bottles; a) Equaline, DISTRIBUTED BY: UNFI, PROVIDENCE, RI 02908 UPC 0 41163 25114 4; b) U.S. FDA Class II
11 Sep 2026 · K.C. Pharmaceuticals, Inc. · OngoingLack of Assurance of Sterility
Zicam, Cold Remedy, Medicated Nasal Swabs, With Cooling Menthol & Eucalyptus, 20 Single-Use Swabs per carton, Zinc-Free Homeopathic, Distributed by Church & Dwight Co. Inc., Ewing,U.S. FDA Class II
10 Aug 2026 · Church & Dwight Co., Inc. · OngoingCGMP Deviations; FDA inspection of the contract manufacturer noted out of limit results for microbiological testing
Rohto Cooling Eye Drops ALL-IN-ONE (hypromellose 0.2%, tetrahydrozoline HCL 0.05%, zinc sulfate 0.25%), Sterile 0.4 FL OZ (13 mL), Distributed by: The Mentholatum Company, Orchard U.S. FDA Class II
14 Jul 2026 · Rohto-Mentholatum (Vietnam) Co., Ltd. · OngoingLack of Assurance of Sterility

A recall usually affects certain batches only. Compare the lot number on your pack.

Check your pack of Zinc

Or take photos of the pack
3 free checks left today Official sources: U.S. FDA · EMA (EU) · NAFDAC · WHO alerts

Questions about Zinc

What is Zinc used for?

Leg Cramps* (From the official U.S. FDA label.)

How do I take Zinc?

Follow your prescription or the leaflet in your pack. The official label says: Adults and children: At the onset of symptoms, dissolve 5 pellets under the tongue 3 times a day until symptoms are relieved or as directed by a doctor.…

Do I need a prescription for Zinc?

In many countries Zinc is sold without a prescription in some strengths. Rules differ by country, so ask a pharmacist.

What brands contain Zinc?

Zinc is sold under names such as Zincum Metallicum. Brand names differ between countries.

How can I check that my Zinc is genuine?

Scan the registration number on your pack with PillVera (NAFDAC number in Nigeria, NDC in the United States, DIN in Canada), check the expiry date and buy only from licensed pharmacies.