This is a spontaneous report from a contactable consumer or other non hcp (parent). A male patient of an unspecified age received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Batch/Lot Number: FA6780) via an unspecified route of administration on an unspecified date at dose 1, single for covid-19 immunisation. Medical history included Type-1 diabetic from an unknown date and unknown if ongoing (my son is Type-1 diabetic and it's not little managed). On an unspecified date the patient experienced nauseus, He is not feeling good at all, he is been sick, he had no energy and he just feel yucky. Reporter son is Type-1 diabetic and it is not little managed and he had his first vaccination try to figure out to have my second and he did not tried Ketone and BKA since he got his first vaccination, his first shot. He is not feeling good at all, he is been sick, he had no energy and he just feel yucky. So, how long last for how long before we are ok, just wanted to know about headache and stuff. Reporter stated, I am calling about some questions regarding, if you can tell me about the side effects of the Pfizer vaccine how long it last for My kids all have their second dose on the same day, 3 of my kid. My children 3 children have vaccination, second dose at the same time at same day. One kid has stomach ache and was really yucky for couple of days. My other child has continue to have headache since during the second shot migraine headaches since the second vaccine. I myself personally had my second shot. There is, last Saturday and I am having headache so, like bad headache, may get headache all days. So, I take two Ibuprofen (Hence, captured as suspect) it is (headache) not going away so, I just want to know. I want to know, my son is Type-1 diabetic and it is not little managed and he had his first vaccination try to figure out to have my second and he did not tried Ketone and BKA since he got his first vaccination, his first shot. He is not feeling good at all, he is been sick, he had no energy and he just feel yucky. So, how long last for how long before we are ok, just wanted to know about headache and stuff. When probed for the confirmation vaccine name as Pfizer COVID 19 vaccine, Consumer stated, I got my second shot since he got his first shot, yes. Name of Vaccine: Consumer stated, It is the Pfizer one. Yes, Pfizer BioNTech COVID 19 Vaccine. Reporter was informed about the role of Pfizer drug safety and Pfizer Medical Information for the query and provided with the number as # withheld and requested to dial the option 3 and informed about timings as 08:00 AM to 20:00 PM from Monday to Friday as per EST. Name of Vaccine: Reporter stated, It is the Pfizer one. Yes, Pfizer BioNTech COVID 19 Vaccine. Reporter was informed about the role of Pfizer drug safety and Pfizer Medical Information for the query and provided with the number as # withheld and requested to dial the option 3 and informed about timings as 08:00 AM to 20:00 PM from Monday to Friday as per EST. LOT: Reporter stated, FA6780 and I got my second shot on Jul31 (Further Confirmed as 31Jul). LOT for Sons Vaccine: Consumer stated, I do not feel fare that I have to give you with that when I have to call back and talk to somebody else about my questions. I can call them tomorrow on that number. It is the same LOT# as mine, the same number (Further confirmed as FA6780). Date of Vaccination: Reporter stated, 31Jul. LOT for Ibuprofen: Reporter stated, I turn at pharmacy it is a prescription bottle, I do not know where I can find that? This is from the pharmacy not from the Co-Pay, it is just a prescription bottle from the pharmacy and it just has the dispense date, the using date and discard by and manufactured not clear Ibu 800 MG, it really do not have a LOT# because it is a prescription product from the pharmacy it is not like a package. Adverse Event of son: Reporter stated, He immediately, first of all like we sat there for 30 minutes after vaccination, because I have an adverse reaction to medication for diabetics (Further not clarified, hence Captured as unspecified Medication). So, we waited 30 minutes before we left there and we got home and it take 20 minutes of time. So, he has not feeling good nauseous did not feel good, he lay down, he did not take ketones because he is diabetic should have blood sugar his blood sugar is not very stable and he is not feeling good. (Further clarification unknown). When requested for further probing, Reporter stated, No, I am not feeling good. Further probing could not be done as consumer was not willing to proceed further. Hence, limited information available over the call. Description of Product Complaint: Reporter stated, I am calling about some questions regarding, if you can tell me about the side effects of the Pfizer vaccine how long it last for? My kids all have their second dose on the same day, 3 of my kid. My children 3 children have vaccination, second dose at the same time at same day. One kid has stomach ache and was really yucky for couple of days. My other child has continue to have headache since during the second shot migraine headaches since the second vaccine. I myself personally had my second shot. There is, last Saturday and I am having headache so, like bad headache, may get headache all days. So, I take two Ibuprofen (Hence, captured as suspect) it is (headache) not going away so, I just want to know. I want to know, my son is Type-1 diabetic and it is not little managed and he had his first vaccination try to figure out to have my second and he did not tried Ketone and BKA since he got his first vaccination, his first shot. He is not feeling good at all, he is been sick, he had no energy and he just feel yucky. So, how long last for how long before we are ok, just wanted to know about headache and stuff. When probed for the confirmation vaccine name as Pfizer COVID 19 vaccine, Reporter stated, I got my second shot since he got his first shot, yes. Name of Vaccine: Consumer stated, It is the Pfizer one. Yes, Pfizer BioNTech COVID 19 Vaccine. LOT Reporter stated, FA6780 and I got my second shot on 31Jul (Further Confirmed as 31Jul). LOT of Sons Vaccine: Reporter stated, I do not feel fare that I have to give you with that when I have to call back and talk to somebody else about my questions. I can call them tomorrow on that number. It is the same LOT as mine, the same number (Further confirmed as FA6780). LOT# of Ibuprofen: Reporter stated, I turn at pharmacy it is a prescription bottle, I do not know where I can find that. This is from the pharmacy not from the Co-Pay, it is just a prescription bottle from the pharmacy. Outcome of the events was not resolved. Follow-Up (27Aug2021): No follow-up attempts are possible. No further information is expected.