I have low testosterone confirmed via blood test, take Viagra occasionally the side effects do suck! Headaches are the worst for me.

I’ve lost a lot of weight lately and back into body building after a knee injury, that combined with being on 100mg Viagra it gets me so rock hard it’s not funny, then even for the next 2 days I still get that rock hard sensation when turned on.

Headache lasts about 6-8hours after taking, lots of water helps