Viagra: uses, side effects, contraindications

Generic Name: Sildenafil
Brands Names: Kamagra, Revatio

Price Range: $0.57 – $1.23
Dosage: 100mg / 75mg / 50mg / 25mg

Viagra is a medication demonstrating an action that is aimed at stimulating natural sexual arousal in men. The drug is used to treat the effects of erectile dysfunction. The active ingredient in Viagra is sildenafil. The action of sildenafil causes increased blood circulation in the genital area resulting in full and prolonged erections as well as orgasmic emotions.

Available to consumers, Viagra first appeared on the market in 1998 and was used to treat problems associated with low sexual potency. Nevertheless, Viagra was first developed for other purposes. Initially, Viagra was suggested to be used for patients with hypertension. However, it was discovered during research trials that Viagra did not decrease blood pressure, but instead, men noted that after taking the pills they had a prolonged erection. This effect of taking Viagra was later confirmed by other men. Therefore, the drug manufacturer decided to use and market Viagra as a remedy for sexual impotence.

Viagra works when men take the pills resulting in increased blood circulation in the penis area. This major result of taking Viagra is the underlying secret associated with the effectiveness of this medication since the primary problem linked to erectile dysfunction is a lack of blood flow within the penis.

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How long does Viagra lasts?

There is the idea that after taking Viagra an erection lasts for an extended period of time. However, this is not exactly true. The effect of Viagra only takes place in the presence of concurrent sexual arousal. Accordingly, thanks to Viagra sexual intercourse can be prolonged because of a full erection. Whereas following ejaculation, an erection disappears and can occur only with the re-stimulation of the man. The action of Viagra last approximately 4 hours, which is long enough to accommodate several full sexual acts.

Some “insurance” for men is that Viagra only takes effect under conditions of natural excitation. This means that the effect of Viagra cannot take place during non-sexual situations. When a man takes Viagra, women are also not able to detect when this medication is being used.

How fast does Viagra work?

Men with erectile dysfunction who have decided to use Viagra are interested in the question, “How long do the effects of a tablet last for?” The effect of Viagra can be seen to last on average 15 to 60 min following ingestion. Knowing when the active ingredient begins to work and how long it stays potent, a man can plan its active period.

How to take Viagra

To take Viagra without need is not recommended since the body of a man can gain tolerance to the active ingredient.
The maximum daily dose of Viagra for a healthy male is 100 mg. However, when first taking Viagra, it should be taken in single 50 mg doses. For certain groups of patients (i.e., men over 65 years of age, patients with kidney, liver, or cardiovascular disease) the recommended dosage of Viagra is reduced to 25 mg. Do not exceed the recommended dose.

Contraindications

Similar to all medications, there are contraindications associated with the potential use of Viagra. All contraindications associated with Viagra related with the possibility of side effects in the presence of certain diseases. Contraindications linked to Viagra are:

  • Hypersensitivity to its components.

  • Concurrent consumption of products containing nitrates. This can lead to a serious drop in blood pressure.

  • Severe liver dysfunction.

  • Taking over medications containing PDE-5 inhibitors.

  • Under the age of 18 years.

According to instructions, there are certain conditions in which taking Viagra is allowed only under the supervision of physicians and with extreme caution:
Anatomical features of the penis, which can be both congenital and acquired, may impair blood circulation. This includes the following:

  • Pathologies associated with priapism.

  • Leukemia.

  • Thromboticectomy.

  • Myeloma.

  • Genetic determination of retinol.

  • Exacerbation of peptic ulcer.

  • Pathology of the heart and other medical history of abnormalities of the cardiovascular system.

Side effects

Viagra and other stimulants are not recommended for those who have had a heart attack, stroke, or angina.
The possibility of onset of side effects is affected by the dosage of Viagra. Possible side effects include:

  • Redness of the skin associated with increased blood circulation.

  • Headache.

  • Visual impairment (increased sensitivity to bright light, blurred vision, etc.).

  • Dizziness.

  • High heart rate.

  • Dyspepsia.

  • Nasal congestion

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