Does zinc work?

Overall Effectiveness Rating for Zinc

The overall effectiveness rating for zinc is 1.8 out of 3. This rating means there is some evidence that using zinc may lead to positive results. This rating also means that some evidence does not back up all claims. Below you can find individual ratings for specific claims.

Overall Confidence Rating for Zinc

There are 6 studies in the database on zinc; the confidence rating is 30. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this rating is for zinc as a whole. There are also individual ratings for the claims below.

Products Containing Zinc

There are 31 products in the database containing Zinc. Follow the link to see the full list.

Individual Claims

The overall ratings above do no necessarily reflect each claim about zinc. Individual claims can have higher or lower ratings. For example, some supplements may have a lot of backing for one claim, but be completely useless for another. Click on claims below for more information.

Body Composition (weight, muscle, body fat) Claims Effectiveness Rating Confidence Rating
decrease body fat

Performance Claims Effectiveness Rating Confidence Rating
improve cycling performance
improve muscular endurance
increase strength

Hormone Function Claims Effectiveness Rating Confidence Rating
increase testosterone

Immune Health Claims Effectiveness Rating Confidence Rating
improve immune function