Is Ashwagandha OK for someone taking warfarin and who also has a slew of other health issues, for example, the person (my father) is in his late 70's and is a stroke survivor and also takes medication for blood pressure, diabetes , prostate issues, atrial fibrillation , etc ? Unfortunately, however, he is suffering from severe depression for which he is on Zoloft for the last few years but I think that effect has now worn off. And hence, I am exploring alternative medication for him. His depression is getting worse and he does not care to see a psychologist either. Any assistance on your end will be much appreciated. Thank you, Dipa