Thanks to rapid and productive development of modern science and technologies, humankind is capable to use the products they offer. There exist millions of different medical preparations that have varied spectrum of action. They can treat or maintain our organism and each of its systems from almost any ailment or disorder. A special heed is given to the problem of impotence in men.
Erectile dysfunction is a severe disease, which can be induced by psychological and physiological factors. It is an inability to experience erection or have it only for brief period of time. Of course, scientists and physicians have enjoyed tremendous success in this sphere and now, men of the whole world have a rich choice in ED cures.
The most dependable and efficacious preparations targeted against ED are Generic Viagra, Cialis, Levitra, Kamagra and Stendra. All of them contain in their composition specific active substances that derive from the family of PDE-5 inhibitors. These inhibitors have powerful influence upon the area of pelvic organs. Namely, they relax muscle of the walls of blood vessels, providing significant improvement of blood inflows. In such way, they enable the possibility for healthy erection with lasting effect. The duration lasts in accordance of the inhibitor type. Mark that erection will not come after taking the drug. A man requires natural reinforcement as well.
Commonly, these preparations are present in the form of tablets. Nevertheless, they are also released in a liquid form of jelly. These remedies treat male disorders of sexual functions. Still, there exist female treatments, which are also highly valued.
Major Indications and Comparison
All preparations have the same mechanism of action. Notwithstanding, there are some differences in other aspects. There is different duration of action, time the drug is to be taken before the anticipated sexual activity, combination with alcohol, special regulations on dosage, consumption of food, contraindications and possible adverse reactions. However, many indications are quite similar.
| Name | Viagra | Cialis | Levitra |
| Active substance | Sildenafil | Tadalafil | Vardenafil |
| Initial dosage | 50 mg | 5 mg | 20 mg |
| Duration of action | 4-5 hours | 36 hours | 4-5 hours |
| Administration time prior sexual activity | 25-30 minutes | 15-20 minutes | 25-30 minutes |
| Contradictions | Enhanced sensuousness to the composition, implementation of the cures with the same action and those that contain nitrates, ailments accompanied with bleeding, heart diseases, uncontrolled heart rate, stroke and arrhythmia, age lesser than 18 years. | Increased sensitiveness to the components of the drug, usage of the remedies of the same action, intake of cures with nitrates, cases of using CVD, uncontrolled heartbeat, ischemic stroke, age under 18 years and vision loss induced by some sicknesses. | Enhanced sensuality to the ingredients of the preparation, parallel administration of the preparations of similar action, simultaneous usage of the products that contain any type of nitrates or HIV protease inhibitors, age under 16 years. |
| Adverse effects | Frequent headaches, redness of the face, digestive disorders and sicknesses, inability to distinguish some colors, increased light perception, allergies of different kinds, reduced blood pressure. | Headaches, dizziness, muscle pains, general sensitivity enhancement to light, heart dysfunctions, pain in abdominal areas, violated vision. | Headache, dizziness, nasal congestion, heart disorders of various origin, muscles pain, too long duration of erections accompanied with pain. |
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| Name | Kamagra | Stendra |
| Active substance | Sildenafil | Avanafil |
| Initial dosage | 50 mg | 100 mg |
| Duration of action | 4 hours | 4-6 hours |
| Administration time prior sexual activity | 30 minutes | 30 minutes |
| Contradictions | Enhanced sensuality to the composition of the preparation, simultaneous administration of the cures with the same effects, parallel usage of products that contain any type of nitrates, recent stroke, severe violations of kidney and/or liver functions, different cardiovascular ailments of serious character, unstable blood pressure levels, age under 18 years. | Increased sensuality to the formulation of the cure, usage of similar products and those containing nitrates, leukemia, recent stroke, epilepsy, stomach ulcers, glaucoma, anemia, liver or kidney disorders, age lesser than 18 years. |
| Adverse effects | Migraine, dizziness, visionary abnormalities and disorders, problems with respiratory tract, different diseases from the side of cardiovascular system, digestive ailments and illnesses, rectal bleeding, pains in chest, increased tiredness, tremors, depressive behavior, general sleep violations, troubled movement, skin allergies, enhanced sweating, ulcers, urinary ailments and dysfunctions, cerebrovascular disorders, fainting, loss of hearing, unstable heart rate, bleeding from the nose. | Ailments of gastrointestinal tract, spasms in the abdomen, dizziness, pains in back, nasal congestion, acute rhinitis, enhanced body temperature, uncontrolled blood pressure, abnormally lasting erections, increased irritability, insomnia and other violations of sleep. |
Other Things to Consider
Stendra and Cialis can be combined with moderate amounts of alcohol and can be taken regardless of meals. Other remedies cannot be mixed up with alcohol, as it may develop adverse reactions. The consumption of fatty foods removes the start of drug’s action. You also have to ask a specialist about safe combination of ED remedies with other medicines.
Elderly examinees and other categories of people who suffer from different ailments and deviations may require dose regulations. Avoid taking more than it is scheduled by your supervisor. Otherwise, you will damage your health.