Zinc
Zinc is an essential trace mineral that the body cannot produce or store on its own, making regular dietary or supplemental intake necessary. Found naturally in meat, shellfish, legumes, and seeds, it serves as a cofactor for over 300 enzymatic reactions governing immune defense, protein synthesis, and cellular repair. It is one of the most widely studied micronutrients due to its broad involvement in hormonal, metabolic, and immune processes.
Research Evidence
May improve glycemic control and insulin sensitivity
ModerateEssential for immune cell development and function
StrongSupports wound healing and tissue repair
StrongSupports healthy testosterone levels in men with marginal zinc status
ModerateReduces duration and severity of the common cold when taken as lozenges at adequate doses
StrongContributes to bone mineral density maintenance alongside other key minerals
ModerateExpert Evidence
45 references from 6 experts
Safety & Cautions
Side Effects
- Nausea on an empty stomach
- Metallic taste
- Copper depletion with chronic high doses
- Headache
- Digestive discomfort
Zinc is generally well-tolerated at doses up to 40 mg per day. Prolonged supplementation above this level can deplete copper stores, so pairing with a small amount of copper (1-2 mg) is advisable when using higher doses for extended periods.
Pairs Well With
Price Comparison
From $0.06/ct
N
NOW Foods
4.7
•250 ct$0.06/ct
$13.99 total
L
Life ExtensionBest Value
4.7
•90 ct$0.06/ct
$5.74 total
N
Nutricost
4.7
•240 ct$0.07/ct
$17.95 total
S
SANDHUHERBALS
4.7
•120 ct$0.14/ct
$16.99 total
T
THORNE
4.8
•60 ct$0.25/ct
$15.00 total
P
Pure Encapsulations
4.8
•60 ct$0.27/ct
$16.00 total