There are certain foods and drinks having Viagra like effect on men. Although these natural sexual enhancers are available, Viagra has got its unique quality of helping a man to enjoy his sex life to its fullest. Sildenafil citrate is the basic ingredient that is incorporated in Viagra, this active agent relaxes the muscles and helps the penile area to achieve hard rock erection.These generic versions are also available in flavored and colored jellies. These jellies are taken orally and starts working within 30 minutes after consumption. These medications are FDA approved, and are available at extremely cheap viagra rates as compared to the branded ones.These jellies are available on line with no prescription and are extremely safe to use. A major disadvantage is its side effects, although these medications are available with no prescription, its side effects are based on personal differences. Some general side effects include headache, nausea, flushing, dizziness, upset stomach and stuffy nose. Its very necessary to time your sexual activity, for better results. These cheap medications are easily available and are effective in treating the problem of impotency.