What it is
Niacin is vitamin B3, an essential vitamin the body cannot store in large amounts, so it needs a regular supply from food or supplements.
What it does in Memoclear
Every cell makes energy using a molecule called NAD+, and niacin is the vitamin the body uses to build it. Brain cells are among the most energy-hungry cells in the body, so a steady NAD+ supply matters for them. Niacin also has a well-known effect on small blood vessels: at higher doses it causes a warm flush as vessels open. In Memoclear it covers the energy side of the formula and supports the tiny vessels the other nutrients travel through.
Where it comes from in food
Beef, chicken, tuna, salmon, peanuts, brown rice and fortified cereals.
What the research says
The NIH Office of Dietary Supplements confirms niacin's role in NAD+ and energy metabolism. Niacin deficiency causes confusion and memory problems, and correcting it fixes them. Whether extra niacin helps memory in people who already get enough is not established. The 7.5 mg in Memoclear is below the level that usually causes a strong flush, though some people notice mild warmth.
Who should be careful
At this amount niacin is considered safe for most adults. A mild flush in the first days is normal and fades. People with liver problems, gout, diabetes or low blood pressure should mention niacin to their doctor.
Where it sits in the formula
Niacin (Vitamin B3) works alongside the other five ingredients: L-Arginine (base), L-Arginine AKG 2:1 Extract, L-Citrulline HCL, L-Citrulline Malate, Beta-Alanine. Together they cover blood flow, cell energy and neuron protection in one daily capsule.
Further reading
Niacin fact sheet, NIH ODS. This research is on the ingredient, not on the finished Memoclear product.