Not All Vitamins Are Created Equal: Why Your Supplements Might Be Failing You

5. Checking Additives and Fillers
A good supplement should not be full of artificial colors, sugar, gluten, or unnecessary fillers like talc or titanium dioxide. Reputable brands usually use a transparent ingredients list. If the list of inactive ingredients is longer than the list of vitamins themselves, that product is likely not a suitable choice for your long-term health.