Got very sick; Starting to feel congested, a lot of mucus; Starting to feel congested; Stomach cramps; Gas; Diarrhea; This case was reported by a consumer via call center representative and described the occurrence of sickness in a 80-year-old male patient who received Flu Seasonal QIV Dresden (Influenza vaccine Quadrivalent unspecified season) for prophylaxis.   Co-suspect products included dextromethorphan hydrobromide + guaifenesin (Robitussin Maximum Strength Cough And Chest Congestion Dm) (batch number R85780, expiry date 30th June 2022) for chronic obstructive pulmonary disease, acetylsalicylic acid (Aspirin (Baby)) for chronic obstructive pulmonary disease, budesonide + formoterol fumarate (Symbicort) for chronic obstructive pulmonary disease, rosuvastatin calcium (Crestor) for chronic obstructive pulmonary disease and TOZINAMERAN (COVID-19 VACCINE PFIZER) for prophylaxis.   Concurrent medical conditions included chronic obstructive pulmonary disease.   On an unknown date, the patient received Influenza vaccine Quadrivalent unspecified season. On 21st November 2021, the patient started Robitussin Maximum Strength Cough And Chest Congestion Dm at an unknown dose and frequency. On an unknown date, the patient started Aspirin (Baby) at an unknown dose and frequency, Symbicort at an unknown dose and frequency, Crestor 2.5 mg at an unknown frequency and COVID-19 VACCINE PFIZER. In November 2021, unknown after receiving Influenza vaccine Quadrivalent unspecified season, the patient experienced sickness, stomach cramps, gas, diarrhea, nasal mucus increased and nasal congestion. The action taken with Robitussin Maximum Strength Cough And Chest Congestion Dm was unknown. The action taken with Aspirin (Baby) was unknown. The action taken with Symbicort was unknown. The action taken with Crestor was unknown. On an unknown date, the outcome of the sickness, stomach cramps, gas, diarrhea, nasal mucus increased and nasal congestion were recovered/resolved.   It was unknown if the reporter considered the sickness, stomach cramps, gas, diarrhea, nasal mucus increased and nasal congestion to be related to Influenza vaccine Quadrivalent unspecified season.  Additional details were provided as follows: The age at vaccination was not reported. The patient received dose of the Flu shot on an unspecified date. The patient took Robitussin max cough chest congestion dm 12fl for COPD (chronic obstructive pulmonary disease) also, this did help tremendously. It did in the past. He received cymbacor 7.5, 2 puffs once a day (astrazenaca) at night, crestor 2.5mg, every 3 days and a baby asprin. The patient also got the pfizer as the covid shot. About 3 weeks ago of reporting date, he had an older bottle of robitussin that had a little bit left in it and got very sick after he took it. The patient experienced stomach cramps, gas and diarrhea, it only lasted the day so he threw it out and he got a new one. The patient commented that, was it flu shot that it reacted badly. Last night (night before reporting) was the first time he used it. It was a brand new bottle. The patient did not take the full amount that was required with the plastic cap, he took about a teaspoon. A couple weeks ago he took about a tablespoon. The patient starting to feel congested because the cold air builds up a lot of mucus. The patient woke up all night with gas and cramps and diarrhea for a whole day, he dumped the rest of the bottle. He took it last night about a teaspoon before he went to bed and he wound up with cramping and gas. It was gone away. The reporter consented to follow up. It was unknown if the reporter considered the sickness, stomach cramps, gas, diarrhea and nasal congestion to be related to Robitussin Maximum Strength Cough And Chest Congestion Dm, Covid-19 Vaccine Pfizer, Symbicort, Crestor and Aspirin (Baby).