Water-soluble vitamins can be taken before or after meals, while fat-soluble vitamins are recommended to be taken with meals or immediately after meals. Vitamins are divided into fat-soluble and water-soluble, of which fat-soluble vitamins include vitamin A, vitamin D, vitamin K, etc. After eating some fat foods, it is more conducive to the absorption of these vitamins. So for fat-soluble vitamins, it is mostly recommended to take them with meals or immediately after meals. On the other hand, water-soluble vitamins, such as B vitamins and vitamin C, can be taken at any time and have little to do with diet. Although it is relatively safe to take vitamins, you should not blindly over-supplement, so as not to overdose on vitamins and cause toxic reactions. Vitamins are widely distributed in various foods, such as seafood, mushrooms, eggs, lean meat, etc., which contain more fat-soluble vitamins, while fresh fruits and vegetables contain a large number of water-soluble vitamins. It is recommended to obtain various vitamins from food through a balanced diet. If you are going to take vitamin-related medications or health supplements, be sure to take them in strict accordance with the recommended dosage as prescribed by your doctor or the instruction manual.