Testimonial: I am currently taking 1 clove of garlic daily morning as soon as I wake up on an empty stomach as a home remedy to reduce hypertension. Before starting this treatment, my average BP measured at home used to be about 155/111 mmHg. After taking 1 clove of garlic daily on an empty stomach since last 2 weeks my BP now seems to be around 135/99 which seems to be a reasonably good improvement. I also have hypothyroidism diagnosed 3 years ago, and am taking a daily dose of 150mg Thyroxin tabs in the morning on an empty stomach, but with 20 mins gap from taking the garlic clove.
Comment: I am not sure if one clove is enough to reduce BP, but if it is working for you that's great. The evidence does seem to support that garlic reduces BP.