The synthetic vitamins to avoid include.
Vitamin A: Acetate and Palmitate.
Vitamin B1 (Thiamine): Thiamine Mononitrate, Thiamine Hydrochloride.
Vitamin B2 (Riboflavin): Riboflavin.
Pantothenic Acid: Calcium D-Pantothenate.
Vitamin B6 (Pyridoxine): Pyridoxine Hydrochloride.
Vitamin B12: Cobalamin.
In order to figure out if your supplements are synthetic or natural, check the label.
Natural supplements usually list food sources or are labeled as 100% plant or animal-based.
Supplements that list nutrients individually, such as vitamin C, or use chemical names like ascorbic acid, are almost certainly synthetic.
Vitamin supplements can contain a variety of ingredients, some naturally derived and some that are synthesized in laboratories.
While many of these supplements may contain the necessary vitamins and minerals, they may only do so in varying amounts and in different forms.
With a few exceptions—such as vitamin E, natural beta-carotene, and vitamin B12—all of the vitamins used in dietary supplements are synthetic.
Vitamin A comes from two sources. One group, called retinoids, comes from animal sources and includes retinol.
The other group, called carotenoids, comes from plants and includes beta-carotene.