Some studies suggest that as many as 8% of age 20-29 and up to 11% of men of age 30–39 have some level of erectile dysfunction.

The generic version of Viagra is much cheaper than branded

While Viagra costs between $70 and $100 per pill, Generic Viagra (sildenafil) is available for as low as $2 per pill. Both medicines are available for purchase from online pharmacies. The cost of generic Viagra is significantly lower, nevertheless, effective and available over the counter.

History behind Sildenafil

In 1992, scientists from Pfizer were working on a drug called sildenafil, which was intended to treat hypertension. The patent of Viagra expired in 2012 and other drug manufacturers have started manufacturing their version of Viagra. Sildenafil is the same as the original drug (Viagra) because of the same active ingredient: sildenafil citrate.

Is there any difference between Viagra and Sildenafil?

They all belong to a group of drugs called phosphodiesterase-5 inhibitors (PDE-5) and work in the same way to address the ED problem. The generic form of Viagra overnight delivery contains the same active ingredient as Viagra and shows similar effects. Sildenafil, the active ingredient in Viagra, is available in a similar dosage: 25mg, 50mg, and 100mg tablet for oral administration. Sildenafil is also available from different manufacturers under different names. These medications all work by increasing blood flow to the erectile tissue of the penis.

Any precautions before taking Sildenafil?

If you want to try an OTC form of Viagra, Cialis, or Levitra, be sure to talk to your doctor about contraindications. Sildenafil shares similar possible side effects, which may include headache, flushing, indigestion, nausea, dizziness, abnormal vision, blurry vision, and visual disturbances.