Examine.com is an independent website that documents clinical research on different supplements. I’ve looked through and managed to find 4 supplements that are all described as having a notable (moderate) effect on depression and are supported by high to very high level of clinical evidence. The 4 supplements are:
- Curcumin (in Turmeric)
- Omega 3 (fish oil)
All four are easily available and they don’t interact with each other so you can use all four of them daily if you wish. (links to the supporting studies are available on the examine.com website under the corresponding supplement pages).