Zinc Gluconate is a water-soluble salt of zinc, widely used as a dietary supplement and therapeutic agent to prevent and treat zinc deficiency. It is a well-tolerated and bioavailable source of elemental zinc, essential for over 300 enzymatic reactions, immune function, protein synthesis, wound healing, DNA synthesis, and cell division. In the Indian context, it is crucial due to widespread zinc deficiency linked to vegetarian diets, soil depletion, and recurrent infections.
Adult: For deficiency: 20-50 mg of elemental zinc per day, in divided doses. For maintenance: 15-20 mg elemental zinc daily. Take 1 hour before or 2 hours after meals for best absorption.
Note: Take on an empty stomach (1 hour before or 2 hours after meals) with a full glass of water to maximize absorption. If gastrointestinal upset occurs, may be taken with a small amount of food low in phytates (e.g., fruit). Do not take with dairy products, calcium, iron, or copper supplements, or high-fiber meals; space by at least 2-3 hours. Tablets may be chewed or swallowed whole as per formulation.
Zinc acts as a catalytic, structural, and regulatory ion for numerous enzymes (metalloenzymes). It stabilizes protein structures (zinc fingers in transcription factors) and is vital for cellular processes. In acute diarrhea, it improves absorption of water and electrolytes, regenerates gut epithelium, boosts immune response against pathogens, and reduces duration and severity.
Pregnancy: Category A (US FDA). Zinc requirements increase in pregnancy. Supplementation (15-25 mg elemental zinc/day) is considered safe and often recommended, especially in at-risk populations. Should be used under medical supervision.
Driving: No known effects on driving ability.
| Tetracyclines (e.g., Doxycycline) & Fluoroquinolones (e.g., Ciprofloxacin) | Zinc binds to these antibiotics in the GI tract, significantly reducing their absorption and efficacy. | Major |
| Penicillamine | Zinc may reduce the absorption and efficacy of penicillamine, used for Wilson's disease and rheumatoid arthritis. | Major |
| Iron Supplements | Mutual inhibition of absorption. Concurrent administration reduces absorption of both. | Moderate |
| Calcium Supplements / Thiazide Diuretics | May increase renal excretion of zinc or reduce its absorption. | Moderate |
| ACE Inhibitors (e.g., Enalapril) | May cause increased zinc excretion, potentially leading to decreased zinc levels. | Minor |