My son aged 45 years was advised acitrom 3 mg and increase the dose if the results of PT TEST for INR IS BELOW 2 SINCE THE RESULT OF INR was only 1.55 ,inspite of increasing the dose to 4 mg INR was not improved and he is gaining weight to a considerable extent. A local DOCTOR says that it is the effect of acitrom consumption. I am also taking acitrom2 MG. And I am not gaining any weight though taking acitrom for more than 5 years, where as my son within 11/2 to2 months gaining weight considerably. Please advise as to what are the side effects of acitrom and help me.