Prostaglandin E1 (PGE1)
Alprostadil dosage guide: how much to take and when
Choosing the right dose of Alprostadil (Alprostadil) is the most important practical decision after starting therapy. Alprostadil is supplied as injection in 10mcg, 20mcg, 40mcg, and the right dose for a given person depends on the indication, age, comorbidities and tolerance to the active ingredient Alprostadil.
Starting dose and titration
According to the prescribing information, most adults begin Alprostadil at the lowest available strength of 10mcg, 20mcg, 40mcg and titrate up only if symptom control is insufficient and tolerability is good. Higher doses are reserved for selected cases. Older adults, people with renal or hepatic impairment, and those taking interacting medications should usually start at the lowest dose.
When to adjust
Dose adjustment is guided by symptom response and side effect burden, not by arbitrary schedules. Alprostadil binds prostaglandin E receptors on smooth muscle of the corpus cavernosum, triggering cAMP-mediated relaxation of cavernosal smooth muscle independent of the nitric oxide pathway used by P… If side effects are limiting at a given dose, going down a step is usually preferred over stopping abruptly. If the response is incomplete after several weeks, a higher dose can be tried under medical supervision.
Frequently asked questions
What is the standard starting dose of Alprostadil? ▾
Most adults start Alprostadil at the lowest strength of 10mcg, 20mcg, 40mcg, with adjustment based on symptom response and tolerance. Older adults and those with reduced kidney or liver function generally start lower. The prescriber decides the exact starting dose for each person.
Can I take a higher dose of Alprostadil if it isn't working? ▾
Higher doses of Alprostadil should only be used after consulting the prescriber. Doubling on your own is unsafe, especially with active ingredients in the Prostaglandin E1 (PGE1) class. The prescriber can confirm whether titration is appropriate or whether the medication needs to be changed.
Products containing Alprostadil
More on Alprostadil
- With alcoholAlprostadil and alcohol — is it safe to drink?
- With foodShould Alprostadil be taken with food?
- Side effectsAlprostadil side effects: common, rare and warning signs
- OnsetHow fast does Alprostadil start working?
- DurationHow long does Alprostadil last?
- Missed doseWhat to do if you miss a dose of Alprostadil
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.