How long does Viagra work?

 The duration of action of Viagra may vary in each case, however, on average, the drug works for 3-4 hours with additional stimulation of the erogenous zones ... There are a number of factors why Viagra (pills for men) can last longer. Experts point to the following facts:

1. The duration of action of Viagra increases proportionally with increasing age. Men over the age of 65 feel the action of the drug longer because the body's metabolism slows down during this period compared to a young age. So its preferable to 비아그라 

2. Taking pills at the same time as fatty foods , you can delay the onset of the effect. Viagra should be taken on an empty stomach.

3. Although alcohol is contraindicated while taking Viagra, it is best to abstain from them. Alcohol reduces blood circulation to the penis, complicates erections and continues to maintain it. Doctors are unanimous - you can take a beer bottle or drink a glass of good wine, but overdosing on these doses is very frustrating, otherwise you may not be in as good shape as at the most important moment.

4. Viagra is produced in doses of 25 to 150 mg. The higher the dose, the more significant the effect obtained, but at the same time it is impossible to prescribe the maximum dose of the drug independently. It is better to trust the opinion of a professional.

5. In case of kidney and liver problems, the duration of action of the drug is usually longer.

6. Some treatment formulas increase the effect of Viagra on erection. Among them is the semi-synthetic antibiotic rifampicin used to treat tuberculosis.

If Viagra medication does not work during the first dose, it does not mean that it is not effective. If nothing happens the first time, wait for the second dose of the drug, then you will notice its effectiveness. Experts recommend taking any impotent drug 8 times before switching to another drug or increasing the dose.

Sometimes Viagra, along with other medications, promotes a condition called "priapism" - a prolonged painful erection lasting more than 4 hours. This is a serious disorder that can damage the penis. If adverse symptoms appear, you should contact your doctor immediately.

Composition of Viagra tablet

The main active ingredient in Viagra is sildenafil. The active ingredient promotes the release of nitric oxide (NO), which is a chemical that has a beneficial effect on the blood vessels around the penis. Sildenafil is considered effective in the treatment of erectile dysfunction. According to specially organized studies, Viagra significantly improves erections in men of different ages - from 18 to 70 years.

Among the inactive ingredients or fillers of Viagra that are intended to be the main active ingredient:

Microcrystalline cellulose

Anhydrous dibasic calcium phosphate

Sodium Crosscarmellose

Magnesium stearate

Hypromellose

Titanium dioxide

Lactose and triacetin

The color of the tablet is provided by food coloring FD & C Blue No 2 (Aluminum Lake), which is safe for health and well-being. If you are allergic to any of the components of the composition, you should inform your doctor before taking the drug.

Interaction of Viagra with other medicines

Men with erectile dysfunction have insufficient blood circulation to the penis, which prevents them from gaining proper firmness of the penis while performing friction. Viagra relaxes the muscles around the penis, increases blood flow. With stimulation, an erection is achieved. However, you need to be careful when combining the drug with the following types of drugs:

1. Nitrates - Medications used to treat chest pain or angina in people with heart disease. Examples of this are isosorbide dinitrate nitrates, isosorbide mononitrate, nitroglycerin. These medications also cause dilation of blood vessels ... Concomitant use of Viagra tablets can lead to a critical drop in blood pressure . Dangerous symptoms - dizziness , severe dizziness , heart attack.

2. Microlide antibiotics - a class of antibiotics used to treat infectious processes ... Examples are erythromycin, clarithromycin, azithromycin. Concomitant use of the drug causes an increase in the concentration of Viagra in the blood. In most cases, your doctor may recommend alternative antibiotics that do not interact with Viagra.

3. Protease inhibitors - Antiviral drugs are used to treat immunodeficiency virus or HIV infection. The total dose of Viagra should not exceed 25 mg in 48 hours if it is used while taking a protease inhibitor. Otherwise, the risk of prolonged and painful erections is high.