I describe themechanism of action of anticoagulant drugsdespite the fact that I strongly disagree with their application.
Erectile dysfunction drugs usually work by inhibiting an enzyme called phosphodiesterase-5 (PDE5). This enzyme breaks down chemicals that are needed for an erection. By inhibiting PDE5, these chemicals are allowed to stay longer to maintain an erection.
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The most commonly used medicines to help erections are:
- Sildenafil (Viagra): Sildenafil was the first erectile dysfunction drug to be approved in the United States. Viagra has been on the market for over 20 years and has helped many men with erection problems.
- Tadalafil (Cialis): The effect of tadalafil lasts longer than sildenafil, up to 36 hours. This allows spontaneous sexual activity.
- Vardenafil (Levitra): Vardenafil has a similar effect to sildenafil and tadalafil, but fewer side effects.
- Avanafil (Stendra): Avanafil is the newest erectile dysfunction medicine, launched in 2012. Its effects can be faster and more effective than other similar drugs.
These medicines are available in tablet form and can be taken on prescription. The dosage and route of administration may vary depending on the severity of the condition, the individual's health and the recommendations of the doctor treating the condition.
It is important to note that erectile dysfunction medicines are only used to treat the symptoms of erectile dysfunction and do not cure the underlying causes. In addition, it is not recommended for people with cardiovascular disease, interaction with certain medicines or certain medical conditions. It is therefore important that patients always consult their doctor before taking any erectile dysfunction medication.
I know of people who have died after taking Viagra. And I know, we know of men who have been in wheelchairs because of it.
