No matter how healthy you eat or what kind of diet you follow, it can be difficult for your body to get all the nutrients it needs from food, all the time. Every diet can have gaps—whether you’re vegan, paleo, keto, or eat everything. Especially the elderly and pregnant women. So how to get your nutrients? A multivitamin. A multivitamin is like an insurance policy, a daily guarantee to ensure your body gets the vitamins and minerals it needs. It can make up for the shortfalls that happen when you don’t get what you need through food. So multivitamins are the most commonly used supplements in the world. Common multivitamins on the market are Centrum, One A Day, Nature Made, and Alive. But which one is the best? We reviewed these four brands to help you find the best multivitamin for your daily life, evaluated quality, and best sellers, and determined which one is best for you.