A provitamin is a substance that can be converted into a vitamin by animal tissues. Similar to a prodrug that is metabolized into a drug.
| Vitamin | Provitamin(s) |
|---|---|
| A | Carotene, cryptoxanthin |
| B5 | Panthenol |
| D2 | Ergosterol |
| D3 | 7-Dehydrocholesterol |
| E | Tocopheryl acetate |