Viagra – the famous blue pill

Viagra is an effective tool for improving the potency. This drug ranks first in recognition among other erectile dysfunction pills. Viagra was approved in 1998, and it was then the revolution in the field of treating male impotence began. The key active agent of Viagra is Sildenafil citrate. This substance increases the blood flow in the penis. As a result, a man receives a good erection (only as a response to sexual stimulation, unwanted erections are impossible except the cases of side effects). The desired action occurs on average 30-60 minutes after the use of tablets and lasts for 4-6 hours. Sildenafil reaches a maximum concentration in the plasma in half an hour or two hours after use (on average, for an hour); therefore, a patient is recommended to schedule sexual intercourse about one hour after taking the drug, in order to maximize the erectile effect. In addition, meal consumption, especially high-fat foods, reduces the rate of sildenafil absorption into the blood, delaying the peak plasma levels (approximately by twenty-nine percent). In such cases, the desired effect may appear 1-2 hour after administration.

Cialis – a long-lasting drug

Another known drug for increasing potency is Cialis. This medical remedy is often prescribed by healthcare professionals. In 2012, it became the best-selling remedyErectile dysfunction drugs for males – types, main features, side effects! for impotence. This is not surprising, in many respects it is more effective than Viagra. Cialis sex pills improve blood circulation in the pelvic region and increase the duration of the erection. The action of these tablets is manifested 20-40 minutes after administering. In rare situations, tablets may not act immediately. The effect can be observed after 1-2 hours, it depends on the characteristics of the particular human body. The drug has an impressive duration of action - 36 hours (1.5 days). Patients, as well as their partners, may not plan a sexual activity with Cialis, since the drug has a long-term effect. The product can be combined with alcohol and fatty foods.

Levitra – quick effect and German quality Levitra is third in popularity among sex pills for men. It is produced by Bayer, a well-known German company. These tablets start to act 20-30 minutes after taking. The drug relaxes the muscles of the cavernous bodies in the penile organ, which helps improve the flow of blood. The effect of the drug lasts around 6 hours.

Avanafil – a new PDE5i drug

Erectile dysfunction drugs for males – types, main features, side effects!

Avanafil is a new medical remedy that appeared on the pharmaceutical market in 2012. The advantage of the remedy is fast-acting. Therefore, a male can have sex as early as fifteen minutes after ingestion. Avanafil has an average duration of 6 hours. Also, it has fewer side effects than other PDE5i tablets.

Side effects and contraindications

PDE5 inhibitors can cause the following side effects:

  • headache;
  • spinal pain;
  • visual impairment;
  • redness of the face;
  • priapism, etc.

Contraindications to the use of PDE5 inhibitors include:

  • the use of nitrates (absolute contraindication);
  • a drug intolerance;
  • severe liver and kidney diseases.
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