Megapan is an Endo-Met Labs Supplement and multiple vitamin-mineral product and for slow oxidizers. Megapan stresses those nutrients which correlate well with those effecting one's metabolic rate. These nutrients include the B-complex, particularly B1, B3, B5 and B6. Other important nutrients in Megapan are vitamin C, vitamin E, manganese, zinc and chromium. Other nutrients are present in trace quantities. 
One Tablet of Megapan contains:
Vitamin A (from Palmitate)
Vitamin C (as ascorbic acid)
Vitamin D3 (as Cholecalciferol)
Vitamin E (as d-alpha tocopherol acid succinate)               
Thiamin (as thiamine hydrochloride)
Riboflavin
Niacin (as niacinamide)
Vitamin B6 (as pyridoxine hydrochloride)
Folic Acid
Vitamin B12 (as cobalamin concentrate)
Biotin   
Pantothenic Acid (as calcium pantothenate)
Iodine (from kelp)
Magnesium (from magnesium hydrolyzed rice protein chelate)
Zinc (from zinc hydrolyzed rice protein chelate)
Selenium (from L-selenomethionine)
Manganese (from manganese hydrolyzed rice protein chelate)
Chromium (from chromium hydrolyzed rice protein chelate)
Potassium (from potassium hydrolyzed rice protein chelate)
para-Aminobenzoic Acid (PABA)
Inositol
Citrus Fruit Peel Bioflavonoids
Suggested Use: One tablet daily, or as directed by a physician.