Micro-Zn Side Effects
Generic Name: zinc sulfate
Note: This page contains information about the side effects of zinc sulfate. Some of the dosage forms included on this document may not apply to the brand name Micro-Zn.
For the Consumer
Applies to zinc sulfate: capsules, tablets
Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Seek medical attention right away if any of these SEVERE side effects occur while taking zinc sulfate (the active ingredient contained in Micro-Zn)
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); severe vomiting; unusual restlessness; very dry mouth, eyes, or skin.
For Healthcare Professionals
Applies to zinc sulfate: compounding powder, intravenous solution, oral capsule, oral tablet
Gastrointestinal side effects of zinc sulfate (the active ingredient contained in Micro-Zn) when taken in large doses have included diarrhea, abdominal creams, and vomiting, usually within 3 to 10 hours of dosing. The symptoms go away soon after discontinuation.[Ref]
Respiratory side effects have included losing sense of smell in patients who use nasal sprays containing zinc.[Ref]
1. Office of Dietary Supplements. National Institutes of Health "Dietary supplement fact sheet: zinc. Available from: URL: http://ods.od.nih.gov/factsheets/Zinc-QuickFacts/" ([2011 Sept 20]):
2. Office of Dietary Supplements. National Institutes of Health "Dietary supplement fact sheet: zinc. Available from: URL: http://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/" ([cited 2012]):
3. "Product Information. Zinc Sulfate (zinc sulfate)." American Regent Laboratories Inc, Shirley, NY.
Not all side effects for Micro-Zn may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.
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