I have used Viagra, brand name and generic. I have also used Cialis, brand name and generic, a brand called Forzest by Ranbaxy RX. google search for an overseas supplier, mostly likely in India. should be able to get around 30 20mg tabs for around $90. keep in mind that you and they(me too lol) are breaking the US law by importing these drugs. altho I don't think tracking down illegal importers of ED drugs is a big priority unless it's a huge amount and you are re-selling them.
I prefer tadalafil (Cialis) over Viagra because it lasts longer, fewer side effects, is more natural. I can take 10 mg every 2-3 days and "rise when requested". it improves blood flow so my cock hangs fuller, more flaccid.(like it did when I was younger) I have a more noticeable "bulge" and women do look at a man's bulge. at my age, 61, they are wondering if "it" still works, and if they see a nice bulge, it's a good thing. I can tell the diff when I take it and when I don't. it's also more natural, my cock just doesn't "boing" into instant hard on, like it does if I take Viagra. Also, Viagra gives me body aches all over, headache, bad vision. I just plain feel terrible the next day, not how you want to feel if you spent the nite and your lady wants more the next day. and the next day, you can take more, up to 20 mg. Cialis doesn't work too well if you had too much alcohol to drink. Viagra still works if you've had a few drinks. both work better and quicker on an empty stomach. Viagra doesn't work well if you have a fatty meal, like burger and fries.
I would recommend that you go see a doctor, cuz if you have ED you have other problems. I did and with the right prescription drugs, diet and exercise I have found that at times I don't need to take ED meds. as others have mentioned, smoking some good weed is helpful. I've known that for 40 years. in my youth, I always fucked stoned, and weed would reduce my recovery time to almost nil.