or try something like
https://www.ozpills.com/ComboTrialPack/15.html to see which ones work best for you and have least side effects. From my other punting mates around the world everyone seems to react differently to the different types but you can then decide a source locally.
I have used this site a few times and yes they are all generic and made in India, not the cheapest (unless you bulk buy and OzPills15 is a discount code for 15% off!!) and take a while to arrive but have always been proper shit.
For me the best is Levitra - feel a bit hot head after 30 mins, not the shits the next day but a bit dodgy though after a
my recovery time is literally 5 mins to full rock even when drunk, I can maintain it until any girl (civvie or WG) just wants me to stop and 1 20mg pill lasts me 48hrs which is sometimes inappropriately funny. 1 of these babies is perfect, again for me as we all react differently, for a weekend in Bangkok, Macau, FKK club etc etc
However, if I am out of supply in HK I literally go to the closest green cross pharmacy with a Cailis sign outside and pick up a box of 100mg generic Viagra (tends to be a different brand every time but photo is current lot which works fine) for HK160 - 4 pills. Not as good as the Levrtra for me but gets me through a sober double/triple pop in an hour or a drunken night with a WG. Wears off after about 4 hours though LB is still a little hungry the next morning with is good for a long stay Wan Chai girl