Spring sincerely answers your question. Grapes eat too much will not have side effects. But grape seeds should be noted that grape seeds swallowed intact and will be excluded from the body, what ingredients can not be absorbed. Chewed and swallowed may cause serious irritation of the gastrointestinal tract, triggering peptic ulcers and other side effects, because the grape seed in addition to healthful OPCss (anthocyanins), there are some unhealthy tannins and other toxic substances exist. It is better not to try it easily. (Tannins have a faint astringent flavor, can cause abdominal pain)

The percentage of OPCss contained in natural grape seeds is about 1%, that is, to get 50mg (mg) of pure OPCss, about to eat nearly six grams of grape seeds, about three pounds of seeded grapes in the grape seed, to the optimal amount of advice, 100mg per day of OPCss, a person should eat on a day! The optimal amount of 100mg of OPCss per day would require a person to eat five to six pounds of grape seeds a day in order to get enough OPCss from natural grapes. Therefore, some natural health ingredients are not always suitable for natural food intake, and concentrated extracted health food ingredients still have their own value of existence.