Life Extension claims to include only nutrients and dosages proven by science to be effective. For example, this multivitamin contains four forms of tocopherol vitamin E, an antioxidant that can boost vision, brain, skin and reproductive health. “Evidence shows that combining alpha- and gamma-tocopherols is better than taking either nutrient alone,” says Feller. “This formula, based on the most recent science, provides more than 80 mg of mixed alpha, beta, delta and gamma tocopherols.” This multi also includes bioavailable quercitin, an antioxidant that can help fight damaging free radicals as well as reduce inflammation.
This multivitamin is suitable for vegans and includes an immune-boosting herbal blend of echinacea, ginkgo biloba, milk thistle, Korean ginseng, cayenne, and goldenseal. As a bonus, BioNaturals included digestive enzymes and probiotics for digestive health and nutrient absorption. It also contains 500 mcg of vitamin B12—a deficiency of which can cause anemia, GI dysfunction, depression, and neurological symptoms such as dementia and forgetfulness, Dr. Pero says.