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NADH is the reduced, active coenzyme form of niacin, vitamin B3. It is the form that carries energy inside cells.

Vitamin B3 is needed for releasing energy from food, for the nervous system and for psychological function, and it contributes to the reduction of tiredness and fatigue. NADH is the form used in the reactions themselves.

Each capsule provides a small dose of NADH with cellulose, in a vegetable capsule suitable for vegans. It is often chosen by people who want to start low and build up as directed.

Elderberry Immune Support combines elderberry extract with vitamin C, zinc and N-acetyl cysteine. Each capsule's elderberry extract is equivalent to three grams of fresh berries.

Vitamin C and zinc contribute to the normal function of the immune system. Elderberry is the fruit with the longest traditional use in winter, and NAC is the precursor the body uses to make glutathione.

Two capsules once or twice a day with meals provides the amount. It is often chosen for short courses through the colder months rather than all year.

Magnesium bisglycinate is magnesium bound to the amino acid glycine. This is the gentle, well absorbed form, sold elsewhere as magnesium glycinate.

Magnesium supports energy release, muscle function, the nervous system and bones, and contributes to the reduction of tiredness and fatigue. Bound to glycine, it is less affected by the compounds in food that block mineral absorption, so it can be taken at any time of day.

Each capsule gives a full dose of magnesium with no fillers or binders, in a vegetable capsule suitable for vegans. It is often chosen by people who find citrate or oxide irritates their stomach, and by anyone who takes magnesium in the evening.