Klean Antioxidant by Klean Athlete

This is a once-daily antioxidant blend for active adults and athletes who want broad antioxidant support alongside a structured training routine. It suits adults who want a single capsule stack covering water-soluble and fat-soluble antioxidants rather than taking each one separately, and athletes who get drug-tested for sport (the product carries NSF Certified for Sport, which screens for banned substances and verifies label accuracy).

Each 3-capsule serving delivers 125 mg of vitamin C (as ascorbic acid), 300 mcg of biotin, 1,000 mg of acetyl-L-carnitine HCl, 400 mg of alpha lipoic acid, 100 mg of maqui berry (Aristotelia chilensis, fruit), and 2 mg of astaxanthin. Vitamin C and alpha lipoic acid are water-soluble antioxidants that recycle each other in the body, astaxanthin is a fat-soluble carotenoid that concentrates in cell membranes, and maqui berry is a polyphenol-rich fruit traditionally consumed in Patagonia. Acetyl-L-carnitine is an acetylated amino acid that shuttles long-chain fatty acids into mitochondria, where they are oxidized to produce ATP, the cellular energy currency.

Take 3 vegetarian capsules daily, preferably with a meal. A 90-capsule bottle covers a 30-day supply at the standard serving. Many adults pair it with a pre-workout or post-workout meal to keep a consistent daily cadence.

If you take prescription medications, are pregnant or breastfeeding, or are receiving cancer treatment, talk to your clinician before starting and review the warnings below.