Talk to Vaccine Specialist on Booster Of Pfizer

Dear all, Hope that you would be having good days in your life with the blessing of Allah. My friend needs your kind guidance in booster dose pfizer. my friend got only one doze of Sinovac 16-7-2021 and he could not get second in fear of fever which he suffered from the first dose. He eventually got booster dose and has fever and fatigue. He has taken pandol extend for relief. Still he has fatigue and fever. He is also diabetic patient and takes evopiride 2/500. May he take an other dose of panadol for relief? what side effects will he suffer in having booster dose eventually with one dose of sinovac vaccination for covid 19? Thanks Regards