Regurgitation and vomiting after taking grape seed capsules are related to the irritation of the gastric mucosa caused by the ingredients of the drug, which is caused by eating irritating food at the same time. Grape seed capsules are a kind of health food that contains not only protein and crude fat, but also high vitamin and mineral content. nausea. Some people may ingest spicy, stimulating, oily food after taking grape seed capsules, which can cause irritation to the gastric mucosa, thus causing regurgitation and nausea.