When we choose grape seeds, we should not only pay attention to the brand of grape seed capsules, but also have a certain understanding of the efficacy and function of grape seeds. Of course, we can't ignore the side effects of grape seeds, and it is best to consider them comprehensively. Gnc grape seed has very good efficacy and function, and it has a very good effect on antioxidation and scavenging free radicals if it is used persistently. However, we can't ignore the side effects of grape seeds. Gnc grape seed has poor water solubility and is easy to combine with some elements in the body, which will reduce the use value and nutritional value, and may even lead to serious itching. Therefore, when using grape seeds, we must pay attention to the dosage, not too much, and even constipation may occur. Now we have a certain understanding of the side effects of gnc grape seeds. It should also be noted that gnc grape seeds are rich in tannins and have a strong bitterness. If used in excess, it may have a certain impact on the digestive system. Therefore, if you want to use grape words or grayed grape seeds correctly, you must use grape seeds strictly and scientifically according to your own physique.