Is it useful to take medications before getting the vaccine to avoid adverse reactions? “It’s totally useless.” To answer, and to clarify, is the National Federation of Orders of Surgeons and Dentists through ‘Dottoremaeveroche’, the anti-fake news site of Fnomceo, after recent reports of the possibility of a very rare but potentially serious adverse reaction that can occur within 10-15 days after vaccination with AstraZeneca’s Vaxevria * Covid vaccines and Johnson & Johnson’s Janssen vaccines, which raised citizens’ questions. “It is completely useless – the doctors clarify – to take aspirin or heparin before or after vaccination to try to eliminate the already minimal risk of this reaction. None of these medicines can in fact achieve this goal, while, by taking them, it is added to the very rare risk of side effects of the vaccine that much greater than these medicines, without bringing any benefit “, the experts warn.” Indeed, heparin – the website reads – could in turn create the reaction that simultaneously determines thrombosis and thrombocytopenia, and do it much more often than the vaccine. The same goes for antihistamines: in the rare case of an allergic reaction – explains the Fnomceo portal – the vaccinator will intervene or prescribe the necessary treatment. Also try to prevent the most common symptoms which can occur following vaccination such as fever, headache, muscle aches, is not needed. Paracetamol or ibuprofen, in fact – the doctors remember – they should be taken only when symptoms develop and not in a preventive manner “. Even undergoing preventive blood tests is of no use. “Being such a rare and particular condition, on an immunological basis and not comparable to other thrombotic phenomena – we read on the anti fake news portal of Fnomceo – no blood test is able to indicate a greater risk or exclude the possibility of undergoing this reaction”. “There is no need to count the number of platelets or evaluate the tendency to clot blood – explains Rossella Marcucci, associate professor of internal medicine at the University of Florence and head of the regional reference center for thrombosis at the Careggi Hospital – The same can be done say for the dosage of autoantibodies characteristic of autoimmune diseases, which, as mentioned, do not represent a specific risk factor “.