it is rare, some people are allergic to grapes and their seeds. If you notice any itching, swelling in your throat, hives, or a skin rash after consuming the seeds, stop using them immediately and seek help.
Stomach Upset: Eating too many seeds at once can cause a stomach ache, nausea, or dizziness. Always start with a very small amount, like a quarter of a teaspoon of powder, to see how your stomach handles it before eating more.
Pregnancy and Nursing: There is not enough scientific research on how large
Tiny Seeds, Big Health: Unlocking the Hidden Power of Grape Seeds