Hi Deborah,
We’re truly sorry to hear about your experience and appreciate you sharing this feedback. Everyone’s body can respond differently to supplements, and while most tolerate Quercetin well, some individuals may experience sensitivity — especially on an empty stomach or when taken with other products.
Your health and comfort are our top priority. Please feel free to reach out to our support team at support@theedwardsedge.com — we’d like to learn more and share with the manufacturer details that may be helpful to you.