Zinc is essential for immune function, testosterone production, wound healing, and over 300 enzymatic reactions. Yet an estimated 17% of the global population is deficient. We review the best forms of zinc supplementation and how to choose the right product.
Why We Reviewed Roundup
Zinc picolinate and zinc bisglycinate are significantly better absorbed than cheap zinc oxide. Form matters substantially — many cheap zinc supplements are poorly bioavailable.
✅ Pros
- Strong immune support evidence
- Important for testosterone
- Wound healing
- Many people are deficient
❌ Cons
- Easy to over-supplement (toxicity possible with high doses)
- Competes with copper (supplement copper if taking zinc long-term)
- Zinc oxide form largely ineffective
Key Ingredients
- Zinc Picolinate (best absorbed)
- Zinc Bisglycinate (gentle, well-absorbed)
- Zinc Citrate (good mid-range option)
- Zinc Oxide (avoid — poor absorption)
Who Is This For?
Those with frequent colds, vegetarians/vegans (high phytate diet inhibits zinc absorption), men with low testosterone, and athletes (zinc lost in sweat).
Check Current Price on Roundup
Find our recommended zinc supplements via the links above.
View Best Price →Price & Value
Quality zinc: $10–$20 for 2–3 month supply. Very affordable.
Our Verdict
Choose zinc picolinate or bisglycinate at 15–30mg/day. Thorne Zinc Picolinate is our top pick. Always take with food to minimize nausea. We give it a N/A/5 and recommend it for those with frequent colds, vegetarians/vegans (high phytate diet inhibits zinc absorption), men with low testosterone, and athletes (zinc lost in sweat).