Do I need a prescription to buy viagra in the united states? If I do is there anyway to get it without one? Are there any substitutes I can get that don’t require a prescription?
I have a prescription for viagra 50 mg. I’ve been thinking it for awhile it works good. The last time I took it I took 2 50 mg to equal 100 mg. Is that safe? I noticed it worked but gave me a bad headache is that normal?