Mineral
Zinc (as Zinc Sulphate)
Also known as: Zinc sulfate, Zinc sulphate monohydrate, ZnSO₄
Zinc is an essential trace mineral critical for immune function, protein synthesis, and wound healing. Zinc sulphate is an inorganic salt form with moderate bioavailability.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Zinc (as Zinc Sulphate) product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Thorne Zinc Bisglycinate 30 mg | 96 A | $0.33 |
| 2 | Thorne Zinc Picolinate 30 mg | 96 A | $0.68 |
| 3 | Pure Encapsulations Zinc Liquid 15 mg | 93 A | $1.45 |
| 4 | Thorne Zinc Bisglycinate 15 mg | 91 A | $0.25 |
| 5 | Pure Encapsulations CogniPhos | 91 A | $1.25 |
| 6 | Pure Encapsulations UltraZin Zinc | 91 A | $0.23 |
| 7 | Pure Encapsulations Zinc 30 | 91 A | $0.23 |
| 8 | Pure Encapsulations Zinc 15 | 91 A | $0.32 |
| 9 | Pure Encapsulations Zinc (citrate) | 91 A | $0.21 |
| 10 | Solgar Zinc Picolinate | 91 A | $0.09 |
| 11 | Pure Encapsulations Zinc chewables | 91 A | $0.20 |
| 12 | Nutricost Calcium + Magnesium + Zinc Citrates with Vitamin D3 Powder | 90 A | $0.32 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much Zinc (as Zinc Sulphate) should I take?
The typical range is 8-11 mg daily (adult women RDA: 8 mg; adult men RDA: 11 mg). Safe for long-term daily use at RDA levels; extended high doses (>40 mg/day) require medical supervision
When should I take Zinc (as Zinc Sulphate)?
Can be taken any time; consistent daily timing recommended. Take with food to improve absorption and reduce GI irritation.
Which form of Zinc (as Zinc Sulphate) is best?
Zinc sulphate.
Is Zinc (as Zinc Sulphate) safe?
Commonly reported: Nausea (especially on empty stomach), Metallic taste, Stomach upset, Copper depletion (with chronic high-dose use).
Which Zinc (as Zinc Sulphate) supplement scores highest?
Thorne Zinc Bisglycinate 30 mg, at 96/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Immune function support
- Wound healing
- Skin health
- Protein synthesis
- Enzyme function
How it works
- Component of immune cell development and function
- Cofactor for zinc finger proteins and DNA transcription
- Required for collagen synthesis and wound healing
- Antioxidant defense via superoxide dismutase
- Involved in taste and smell perception
Dosage
- Typical range
- 8-11 mg daily (adult women RDA: 8 mg; adult men RDA: 11 mg)
- Timing
- Can be taken any time; consistent daily timing recommended
- With food
- Take with food to improve absorption and reduce GI irritation
- Duration
- Safe for long-term daily use at RDA levels; extended high doses (>40 mg/day) require medical supervision
- Special populations
- Pregnant women: 11 mg daily; Lactating women: 12 mg daily; Plant-based dieters may need higher intake due to lower bioavailability
Forms
- Zinc sulphate· 70/100
Safety
Common side effects
- Nausea (especially on empty stomach)
- Metallic taste
- Stomach upset
- Copper depletion (with chronic high-dose use)
Contraindications
- Chronic high-dose use without copper supplementation
- Severe kidney disease (without medical supervision)
Products containing Zinc (as Zinc Sulphate)
Top-scoring supplements in our catalog that list Zinc (as Zinc Sulphate) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Zinc is well-established as essential with strong RCT evidence for immune support and cold duration reduction. Zinc sulphate has moderate bioavailability; chelated or amino acid forms may be better absorbed.
Grade A: Multiple well-designed human trials support the main claims.
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.