Kamagra You might see sites selling Kamagra as a cheap over-the-counter Viagra alternative. This can knock your ability to get it up. This matters, because fake Viagra can be cut with everything from printer ink to speed. It might be a while before MED is available at your local pharmacy. Supplements for Erectile Dysfunction There are a number of nutritional supplements that people take for ED.Generic Viagra (sildenafil) is an alternative to the branded Viagra drug that can be used for treating erectile dysfunction (ED). It’s now sold by many manufacturers, including online. Unless you live on the border with Mexico, you can NOT buy Viagra over the counter in stores like CVS, Walgreens, GNC, or Walmart. You need to go to your doctor, tell he or . What can I use instead of Viagra? As an alternative to Viagra, a person may wish to try any of the following: Alternative oral drugs: Including vardenafil, tadalafil, and avanafil.