Thorne Iron Bisglycinate vs Thorne Zinc Picolinate 15 mg

Choose Iron Bisglycinate if…

• People with low ferritin who get stomach upset from ferrous sulfate
• Menstruating women and athletes who need iron under medical guidance
• Vegetarians with confirmed low iron
• You care most about efficacy

Choose Zinc Picolinate 15 mg if…

• People with low zinc intake, including those eating mostly plant foods
• Athletes and label-conscious buyers who want NSF-certified products
• Anyone who wants single-nutrient zinc at a modest dose

Iron Bisglycinate

• Iron amino-acid chelate, a form NIH says may cause fewer GI side effects
• NSF Certified for Sport
• 25 mg dose sits below the 45 mg upper limit
• Small 18 mm capsule with a short ingredient list
• About $0.27 per day, more than generic ferrous sulfate
• Some users still report nausea on an empty stomach
• No vitamin C or other cofactors included
• Not appropriate without a confirmed need for iron

Zinc Picolinate 15 mg

• 15 mg dose close to the RDA and well under the 40 mg upper limit
• Minimal excipients; gluten-, dairy- and soy-free
• Listed in NSF's certification database; Amazon listing says NSF Contents Certified
• Small 18 mm capsules
• No copper included for long-term use
• Picolinate's absorption advantage is a brand claim NIH does not confirm
• About $0.25 per day, pricier than drugstore zinc
• Two capsules a day plus diet can approach the upper limit