Natural vs. Synthetic Sources of Supplements

Vitamin                         if the source given is only:              it is:

Vitamin C                             Rose hips, acerola, citrus fruits,              Natural
                                             green peppers

Vitamin C                             Ascorbic Acid* or if source not given     Synthetic                  (*only a portion of the whole vitamin c molecule)

Vitamin B-complex              Brewer’s yeast                                         Natural

Vitamin B-complex              If source not given                                  Synthetic

Vitamin B1                           Yeast or rice bran                                    Natural

Vitamin B1                           Thiamine Hydrochloride or                      Synthetic
                                             Thiamine Chloride

Vitamin B1                           Thiamine Mononitrate                             Synthetic

Vitamin B2                           Yeast or rice bran                                    Natural

Vitamin B2                           Riboflavin                                                 Synthetic

Vitamin B6                           Yeast or rice bran                                    Natural

Vitamin B6                           Pyridoxine Hydrochloride                        Synthetic

Niacin (B3)                           Yeast or rice bran                                    Natural

Niacin or Niacinamide          If source not given                                  Synthetic

Vitamin B12                         Yeast, liver or                                          Natural
                                             fermentation concentrate

Vitamin B12                         Colalamin or Cyanocobalamin                Natural

PABA                                    Yeast                                                        Natural

PABA                                    If source not given                                  Synthetic

Folic Acid                             Yeast                                                        Natural

Folic acid                              Pteroylglutamic acid or if source            Synthetic
                                             not given

Pantothenic acid                 Yeast                                                        Natural

Pantothenic acid                 Calcium Pantothenate                            Synthetic

Inositol                                 Soy beans, corn or yeast                        Natural

Choline                                 Soy beans or yeast                                  Natural

Choline                                 Choline Bitartrate                                    Synthetic

Biotin                                    Yeast                                                        Natural         

Biotin                                    d-biotin                                                     Synthetic

Vitamin A                             Fish oils or lemon grass                            Natural

Vitamin A                             Acetate or Palmate                                 Synthetic

Vitamin D or D3                  Fish oils                                                     Natural

Vitamin D or D3                  Irradiated Ergosterol or Calciferol           Synthetic

Vitamin E                              Vegetable oils, wheat germ,                   Natural
                                             mixed tocopherols

Vitamin E                              d-alpha tocopherol or tocopheryl          Natural
                                             acetate

Vitamin E                              Alpha tocopherol acetate or                  Synthetic
                                             dl-alpha tocopherol
                                             (or tocopheryl) acetate

Vitamin E                              Succinate                                                 Can be natural                                  or synthetic

Vitamin K                             Alfalfa                                                      Natural

Vitamin K                             Menadione                                               Synthetic

Vitamin P or                         Citrus Bioflavinoids, rutin,                        Natural
Bioflavinoids                         hesperidin, citrin