This is the detailed dose o niacin- initial dose: 250 mg orally once a day following the evening meal; increase frequency and/or dose every 4 to 7 days to the desired effect or first-level therapeutic dose (1.5 to 2 g/day in 2 to 3 divided doses); if the response is inadequate after 2 months, the dose can be increased at 2 to 4 week intervals to 1
-maintenance dose: 1 to 2 g orally 2 to 3 times a day
-maximum dose: 6 g/day (in 2 to 3 divided doses)
Dizziness is common side effect of niacin ,niacin also called nicotinic acid ,is a B vitamin (B3) used in vitamin supplement ,use to prevent cardiovascular disease lowering cholesterol and triglycerides in the blood ,it is use for hyperlipoprotenemia and a supplement to treat vitamin B3 deficiency ,some might experience itching under the skin ,redness sweating or chills ,nausea legcramps insomnia