How is Cialis different than Viagra?

Cialis is the brand name for tadalafil and Viagra is the brand name for sildenafil. Both drugs make part of phosphodiesterase type 5 (PDE5) inhibitors.  PDE5 is the enzyme that is responsible for regulation of the blood flow in the penis. PDE5 inhibitors manifest their effect only in response to a sexual stimulation. The reason is that they rely on the natural release of nitric oxide (NO), a chemical characteristic only for period of sexual arousal. Nitric oxide activates other substances to relax the smooth muscle of the penis to let the inflow of blood and an erection is produced. PDE5 inhibitors intensify the action of NO.

Although Cialis and Viagra have the same mode of treating erectile dysfunction, their effectiveness and other aspects vary.

Difference between Viagra and Cialis

  1. Different active substances.
  2. 1 hour after taking the pill is needed for Viagra to show its effect while Cialis began affect your body in 30min after taking the pill.
  3. Cialis is effective up to 36 hours (17.5-hour half life) while Viagra’s effect lasts up to 4 hours.
  4. Viagra provokes colour vision change, especially between green and blue, and may increase sensitivity to light.
  5. After taking Cialis some people experience muscle aches and back pain.

Cialis can be used on a daily basis, at a smaller dosage, and is also effective at treating benign prostatic hyperplasia (BPH). Dosage of Cialis may need reducing in case of treating patients with liver or kidney problems and risk of interactions may be higher than with Viagra.

The list of general side effects of Cialis and Viagra also includes redness or warmth of the face, neck or chest, headaches, low blood pressure, dizziness, stomach pain, sneezing, stuffy nose or sore throat, memory problems, diarrhea, nausea,  prolonged erections (priapism), loss of hearing, and ringing in the ears.

Food has no effect on the action of Cialis. Nevertheless, it may provoke decrease in the effectiveness of Viagra. Cialis can interact with alcohol. Alcohol abuse while taking Cialis can be a reason of low blood pressure when you arise from a sitting or lying position. This may translate into dizziness or a headache.

Viagra wasn’t proved to provoke hypotension when taken with alcohol. Meanwhile, alcohol may inhibit your ability to get an erection even during your treatment with any of these drugs.