Viagra is a drug designed to treat erectile dysfunction in men. The product is considered one of the most effective and safe on the modern market, but it has a number of contraindications, peculiarities in use and side effects. That's why it is so important to study the key characteristics of the drug and read the instructions developed for it by the manufacturer before using the pills.
The main characteristics of the drug
Production of the drug Viagra is engaged in several pharmaceutical companies from around the world (Maxpharma Baltija from Lithuania, LLC "Ozon" from Russia, Artura Pharmaceuticals from India, etc.). The drug is produced in the form of tablets with a white core covered with a blue coating. Each tablet contains 25, 50 or 100 mg of active substance. The tablets are packed into cellular packs or jars (1-60 pcs.). The drug comes on the market in packs of thin cardboard. Each package contains 1 to 6 blisters or 1 jar of the drug, as well as detailed instructions.
The tablets should be stored in a dry place, protected from sunlight, at a temperature not exceeding 25 C. The maximum storage period is 3 years from the date of production. After expiry of this period, the remains of the drug should be disposed with other household wastes.
Indications for use
Viagra is prescribed for erectile dysfunction - a pathology manifested by the absence of a man's ability to achieve an erection necessary for a full sexual intercourse. In some cases, the drug is used to treat pulmonary hypertension.
Composition of the drug
The main active ingredient of the drug is sildenafil citrate. Along with the active component, the drug includes a range of substances that perform auxiliary functions:
- lactose monohydrate;
- magnesium stearate crystals;
- microcrystalline cellulose, etc.
Titanium dioxide, talc, polyethylene glycol, dyes and polyvinyl alcohol are used to make the shell of the tablets.
The drug is taken orally about an hour before intercourse. Standard single dose of the active substance is 50 mg. If necessary (for example, if the drug is not effective or if its components are poorly tolerated), the dosage can be increased or halved.
Viagra should not be used more than once a day. A single dose of the active substance should not exceed 100 mg. Elderly men and people with liver or kidney disease are not recommended to take more than 25 mg of sildenafil citrate per day.
Most men tolerate Sildenafil treatment well. Side effects from the use of this drug are extremely rare. The most common are considered to be:
- Sleep quality problems;
- asthenic syndrome;
- muscle and joint pain;
- hot flashes;
- stool disorders (diarrhea);
- abdominal pain;
- increased muscle tone;
- runny nose and stuffy nasal passages;
- Inflammation of the sinuses;
- Infectious diseases of the upper respiratory tract;
- increased photosensitivity;
- Temporary changes in perception of colors and shades;
- Back and lower back pain;
- Infectious diseases of the urinary system;
- increased susceptibility to all types of stimuli;
- fainting spells;
- occlusions of the blood vessels that feed the retina;
- ischemic attacks;
- decreased visual fields;
- impaired hearing;
- spikes in blood pressure;
- atrial fibrillation;
- dry mouth;
- blood in the semen;
- pain in the chest area;
- increased fatigue, decreased ability to work;
- tremors in the extremities;
- depressive states;
- hemorrhages in the eyeballs;
- dryness of the cornea;
- decreased concentration of erythrocytes and leukocytes in the blood;
- increase in the size of the mammary glands;
- shortness of breath;
- increased secretory activity of the bronchi;
- constant feeling of thirst;
- strange dreams, nightmares;
- decreased reflex activity;
- cerebral vascular thrombosis.
In addition, side effects from the use of "Sildenafil" are considered prostate disorders and the appearance of skin rashes.
Consequences of overdose
When taking "Sildenafil" you should strictly follow the dosages prescribed in the instructions or recommended by your doctor. Signs that signal an overdose are:
- impaired nasal breathing;
- abdominal pain;
- A peculiar taste in the mouth;
- Temporary visual impairment; problems with color perception;
- Blood rushes to the face and neck.
When signs of overdose are identified, symptomatic treatment is carried out.
Contraindications to the use of the drug
Unfortunately, Viagra is not suitable for all men. Contraindications to the use of this drug are:
- Undergoing courses of treatment with nitrates or nitric oxide donators;
- Allergy to the components contained in the medicine;
- Under 18 years of age.
Viagra should be used with particular caution in patients who suffer from:
- Pathologies whose development is accompanied by a deformity of the penis (fibroplastic induration or uncontrolled growth of connective tissues of the cavernous bodies of the penis can be included in this group);
- multiple myeloma;
- sickle cell anemia;
- peptic ulcer disease;
- retinitis pigmentosa.
In the presence of contraindications, Viagra may be substituted with other drugs intended to combat erectile dysfunction in men. It is advisable to get a detailed consultation with your doctor before taking any drugs belonging to this class.