These are perhaps the most well-known and widely used supplements. Multivitamins typically contain a combination of vitamins and minerals essential for overall health, such as vitamin A, vitamin C, vitamin D, vitamin E, various B vitamins, calcium, magnesium, zinc, and iron. Omega-3 Fatty Acids: Found primarily in fish oil, omega-3 fatty acids, particularly EPA (eicosapentaenoic acid) and DHA...