Generally speaking, there are no strict rules on when to take grape seeds, either after or before meals. Grape seeds are the seeds of grapes, rich in amino acids, vitamins and minerals, which can prevent cardiovascular diseases, delay skin aging, lighten spots and enhance skin elasticity. If you do not have gastrointestinal disorders, you can eat grapeseeds before meals to fully absorb the nutrients. If you have poor gastrointestinal function or have digestive disorders, it is recommended to take glucosamine seeds after meals. Foods with high protein and fat content, such as eggs, should not be consumed within half an hour after taking glucosamine seeds, as they can cause bloating and are not easily digested. In addition, it is important to avoid taking grape seeds at bedtime, as they can affect the quality of sleep due to their refreshing effect, and they should not be taken together with collagen, as this can affect the absorption of both.