Supplements explained
clearly and scientifically

Buffers muscle acidity. Helps with repeated efforts of 60 to 240 seconds.

Effective stimulant. Improves performance, focus, and perceived exertion at well-adjusted doses.

More strength, more reps, better recovery between sets. The most studied sports supplement.

A cofactor in hundreds of reactions. Useful for cramps, sleep, and stress management.

Glutathione precursor, the main antioxidant cells make themselves. In the EU it is a medicine.

Kitchen baking soda, studied as a buffer for intense efforts lasting 30 seconds to 12 minutes.

Studied for blood sugar and cholesterol, with a modest effect on weight.

Glutathione precursor, the main antioxidant cells make themselves. In the EU it is a medicine.

Essential fatty acids. Proven cardiovascular benefit and emerging evidence on cognition.

It lowers cholesterol for the same reason a medicine does: it contains the same molecule. Of 37 European products analyzed, none held what its label declared.

The most studied plant remedy for the prostate, and one of the few supplements whose best trials came out negative.

Essential for bones, immune function, and mood. Deficiency is very common at high latitudes.

Traditional adaptogen. Reasonable evidence for stress and subclinical anxiety.

Effective stimulant. Improves performance, focus, and perceived exertion at well-adjusted doses.

More strength, more reps, better recovery between sets. The most studied sports supplement.

A cofactor in hundreds of reactions. Useful for cramps, sleep, and stress management.

Sleep-wake cycle hormone. Effective for jet lag and circadian phase shifts.

Essential fatty acids. Proven cardiovascular benefit and emerging evidence on cognition.

Essential for bones, immune function, and mood. Deficiency is very common at high latitudes.

Essential for bones, immune function, and mood. Deficiency is very common at high latitudes.

Kitchen baking soda, studied as a buffer for intense efforts lasting 30 seconds to 12 minutes.

Traditional adaptogen. Reasonable evidence for stress and subclinical anxiety.

The most studied plant remedy for the prostate, and one of the few supplements whose best trials came out negative.