Hello! Welcome to HealthcareMagic! I appreciate your knowledge and the vigilant attitude towards drugs you administer. Of course garlic is proven to have some interactions with some medicines like Isoniazid, Warfarin, etc but not with those medicines which you have been using for hypertension. So, you can safely consume garlic capsules now. Moreover, there are a few studies which show the effectiveness of garlic in reducing hypertension of upto 7-8% but it is not be proven in very large case studies. Anyhow, garlic has got so many other benefits too that make it important. Hope your doubt is cleared. Any further queries, please let me know. I m always here to promptly guide you. Thank you for the query. Take care Regards, Dr. Pallavi.m, Anesthesiologist