Erectile dysfunction

Erectile dysfunction (ED) is a very common condition that can significantly affect people’s lives. It is not unusual for men with ED to feel ashamed or insecure, and it can be particularly challenging in relationships. If you are struggling with ED, you are not alone—up to 150 million men worldwide experience this condition.

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Treatments

Comparison table

Dosage form

Tablet

Onset of action

30-60 minutes

Duration of action

4 hours

Peak effectiveness

1 hour

Maximum dose

One per day

Active ingredient

Sildenafil

Dosage form

Tablet

Onset of action

30-60 minutes

Duration of action

4 hours

Peak effectiveness

1 hour

Maximum dose

One per day

Active ingredient

Sildenafil

Dosage form

Tablet

Onset of action

16-30 minutes

Duration of action

36 hours

Peak effectiveness

2-4 hours

Maximum dose

Once daily

Active ingredient

Tadalafil

Dosage form

Tablet

Onset of action

16-30 minutes

Duration of action

36 hours

Peak effectiveness

2-4 hours

Maximum dose

Once daily

Active ingredient

Tadalafil

Dosage form

Injection

Onset of action

Immediate

Duration of action

3-4 hours

Peak effectiveness

n/a

Maximum dose

2–3 times a week

Active ingredient

Alprostadil

Dosage form

Cream/gel

Onset of action

5-10 minutes

Duration of action

1-2 hours

Peak effectiveness

0.5-1 hour

Maximum dose

2–3 times a week

Active ingredient

Alprostadil

What is erectile dysfunction?

In cases of erectile dysfunction, the complex process involved in achieving an erection is disrupted. Normally, sexual stimulation causes the blood vessels in the penis to widen, allowing increased blood flow, which makes the penis rigid and erect. Many instances of ED occur because the blood vessels in the penis do not dilate sufficiently to allow adequate blood flow, or the veins are unable to retain the blood, resulting in difficulties with erections.

Symptoms of ED
Effects of ED
Causes of ED
Preventing ED
Solutions for ED
Treating ED

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