Little allergic reaction; Im getting a burning in the back; Im getting a burning near my naval my lower side; My back felt inflamed; This case was reported by a consumer via call center representative and described the occurrence of allergic reaction in a 63-year-old female patient who received Flu Seasonal QIV Dresden (Influenza vaccine Quadrivalent 2021-2022 season) for prophylaxis.   Co-suspect products included starch (Benefiber (Wheat Dextrin)) (batch number MP2T, expiry date 30th September 2023) for product used for unknown indication.   Concomitant products included plantago ovata (Metamucil).   In September 2021, the patient received Influenza vaccine Quadrivalent 2021-2022 season. On 21st September 2021, the patient started Benefiber (Wheat Dextrin) at an unknown dose and frequency. On 21st September 2021, less than a week after receiving Influenza vaccine Quadrivalent 2021-2022 season, the patient experienced allergic reaction, burning sensation, burning sensation in abdomen and inflammation localized. The patient was treated with paracetamol (Tylenol). The action taken with Benefiber (Wheat Dextrin) was unknown. On an unknown date, the outcome of the allergic reaction, burning sensation, burning sensation in abdomen and inflammation localized were recovering/resolving.   It was unknown if the reporter considered the allergic reaction, burning sensation, burning sensation in abdomen and inflammation localized to be related to Influenza vaccine Quadrivalent 2021-2022 season.  Additional details were reported as follows: This case was reported by the patient herself. The age at vaccination was not reported. Over the weekend from the date of reporting, the patient received a flu shot and did not have the problems before receiving vaccine. The patient got BeneFiber Healthy Shape Taste-Free Fiber Supplement Powder 17.6 oz 2 days before the date of reporting and the reporting day was the second day taking it. The patient doesn't think she was going to be taking it anymore, since she had been taking it (on Monday), she felt like she was having a little allergic reaction and she don't know exactly what was in it. It says plant based; it says wheat dextrin. The patient was also getting a burning and she did not have this before she started drinking BeneFiber. The patient stated that the burning was not on her stomach but on the side, near her naval her lower side and in the back. After her reaction she felt last night she had to rub stuff on her back as it felt inflamed, it was on the side. The reporter stated that the events were not started right after she took BeneFiber and she guess it was some hours. The patient never took BeneFiber before, she took Metamucil before. The patient did not follow the instructions on BeneFiber and she took like one tablespoon a day before reporting and took one tablespoon and little bit on the day of reporting. The patient only took it one time during the day and did not take it twice. The patient was fine all day on the day of reporting and last night took two Tylenol, got on a heating pad. The patient had taken it with water, and she started feeling it again coming back. The patient was not going to use it because she doesn't know if this was affecting. The patient was not going to sue anymore of it.  The patient was going to return BeneFiber and wanted to know what was in it. The patient stated that the nutritionist said sometimes you can drink some of that to get more fiber in your system and that was why she bought it to get more fiber in her system because that would help to control her weight.  The patient talked to her doctor and was waiting for them to give her a call. The patient was treated by a health care professional. It was unknown if the reporter considered the allergic reaction, burning sensation, burning sensation in abdomen and inflammation localized to be related to BeneFiber Healthy Shape. The reporter did not consent to follow-up The reporter did not consent to follow-up with health care professional.; Sender's Comments:  US-GLAXOSMITHKLINE-US2021AMR202081:Same reporter. ID for pharma case / Same reporter / Same product / Same patient