Prebiotic Daily Greens

An electrolyte involved in muscle and nerve function; sweat losses are much smaller than sodium's.

Magnesium supports muscle and nerve function and sleep; many athletes fall short of the recommended intake. Supplementing helps mainly when intake is low. Glycinate and malate forms are well absorbed and gentle on the stomach.

Needed for immune function and healthy skin and gut lining; most people get enough from diet.

Supports immune function and acts as an antioxidant; moderate doses may reduce colds during heavy training, while very high doses may blunt training adaptations.

Vitamin D supports bone, muscle and immune health; deficiency is common in athletes who train indoors or live far from the equator.

Needed for blood clotting and bone proteins; often paired with vitamin D. Evidence for bone benefits in healthy adults is mixed. Talk to a doctor if you take blood thinners.

Needed for red blood cells and nerve function; especially relevant for vegans and vegetarians.

An electrolyte and bone mineral; sweat losses are small compared with sodium.

Iron is essential for carrying oxygen; deficiency is common in endurance athletes (especially women) and impairs performance. Supplement only if a blood test shows you need it.

Zinc supports immune function and tissue repair; athletes lose some in sweat. Helpful if your diet is low in it.

A trace mineral needed for iron metabolism and connective tissue; most diets provide enough, and high zinc intakes can lower copper.

A trace mineral involved in bone formation and antioxidant enzymes; deficiency is rare.

A blend whose individual ingredient amounts aren't disclosed on the label, so the dose of each can't be checked against the research.

Fiber that feeds beneficial gut bacteria; it can cause gas or bloating, so avoid large amounts just before exercise.

A blend whose individual ingredient amounts aren't disclosed on the label, so the dose of each can't be checked against the research.