Niacin 75 mg in Protoflow: Above the Upper Limit

The daily value is 16 mg, the upper limit is 35 mg and Protoflow gives 75 mg.

The upper limit applies to niacin from supplements and fortified foods and not to niacin from ordinary food.

Because doctors prescribe large doses of nicotinic acid to treat cholesterol, under supervision, and supplements may borrow from that image.

Prescription doses run into hundreds or thousands of milligrams and need liver monitoring. Over-the-counter blends at 75 mg are not prescription therapy. The point to take is that niacin at this level is a drug-like dose in a supplement format, and it deserves a drug-like level of care.

Flushing, itching, stomach upset, headache and, in a few people, a drop in blood pressure.

Effects usually come within an hour of the dose. At 75 mg, many men notice little, and some notice a clear flush. The form matters, as the label does not say if it is nicotinic acid or niacinamide. Niacinamide at high doses can still cause nausea and liver effects.

Which form of niacin is used, and whether the amount is tested in each lot.

A clear answer should come in one line. If the form is nicotinic acid, expect flushing. If it is niacinamide, flushing is unlikely but the liver caution holds at higher intakes. Write to [email protected] and keep the reply with your records.