Patrick holford gl support combines vitamins b2 b3 b6 and b12 which contribute to normal energy metabolism along with chromium which contributes to the maintenance of normal blood glucose levels ingredients garcinia cambogia powder bulking agent microcrystalline cellulose griffonia simplifica seed extract providing 5 htp vitamin b6 as pyridoxine hydrochloride niacin vitamin b3 as nicotinamide thiamine vitamin b1 as thiamine hydrochloride anti caking agent magnesium stearate