The following is a list of Protandim ingredients:
Proprietary Blend 675 mg:

•Milk thistle extract (Silybum marianum) (seed)[225 mg]
•Bacopa extract (Bacopa monnieri) (aerial part)[150 mg]
•Ashwagandha (Withania somnifera) (root)[150 mg]
•Green tea extract (Camellia sinensis) (leaf)[75 mg]
•Turmeric extract (Curcuma longa) (rhizome)[75 mg]

I believe All these help increase SOD levels.

jackD

p.s. These quantities of the supplements seem a little weak!!! Cheat and get more of most from other sources!!