There are several types of drugs directed to treat erectile dysfunction. The following groups may realize this main aim:
- inhibitors of phosphodiesterase,
- stimulators of NO-synthase,
- supplements based on plant or animal components.
Most drugs are taken orally, in the form of tablets. Nevertheless, there are also funds intended for injections and even sprays. In most cases, tablet dosage forms are much more convenient, and injections cannot always be done immediately before intercourse.
At first, Trust Pharmacy decides to explain all the details about inhibitors of phosphodiesterase the most part of which are ED drugs.
Inhibitors of phosphodiesterase
The most famous group of drugs. List of the main drugs included in the group:
Sildenafil is sold under the well-known brand name Viagra. The drug was created by the American pharmacological company Pfizer. The properties of the drug, affecting the potency, were discovered accidentally because originally the drug was intended for the cardiac muscle dysfunctions treatment. The effect of Viagra is rapid – for several minutes, although this time can be individual for each. The effect lasts up to 4 hours.
Despite the fact that today there are more effective drugs have been developed that increase potency, Sildenafil still keeps its popularity. In addition to the original drug (Viagra), there is a number of generics based on the same active substance (Sildenafil). They are basically different from Viagra at a price.
Cialis is based on another active substance – Tadalafil. This drug was developed later than Viagra. The effect duration exceeds the duration of Viagra action lasting up to 36 hours. The rate of the effect’s onset is also higher than that of Sildenafil-based drugs, and is usually a quarter of an hour, in rare cases – an hour or more.
Levitra is based on another active substance from this group – Vardenafil. This ED drug is developed by the British pharmaceutical company Glaxo Smith Kline. The effect of the drug appears after about 20-25 minutes and lasts for up to 4 hours. The main drug advantage is a minimum of contraindications and a softer list of side effects. It is less affected by the effects on the liver, kidneys and cardiovascular system. Also, the drug can be combined with alcohol in moderate doses and fatty foods. However, in this case, the effect of the drug may come a little later than usual.
Nevertheless, the preparations of the group have a lot of contraindications. They are contraindicated in case of heart failure, renal failure, hypertension, diabetes and some other chronic diseases. The use of drugs is strictly contraindicated in the case of simultaneous nitroglycerin application.
In addition, the drugs will not help if the man suffers from violated libido, that is, sexual desire. The drugs are intended only to enhance the erection, and not to restore sexual desire. Studies show that the effectiveness of drugs in this group is quite high- 70-92%. These are relatively safe drugs, although they should not be taken without a doctor’s recommendations, especially people with chronic diseases.