Who starts at higher risk
Sickle cell anemia, multiple myeloma, and leukemia are the named predisposing conditions.
A QT-clear ECG does not clear those tags. Tell the prescriber before the first swallow.
When is four hours a care visit?
If an erection persists longer than 4 hours, the patient should seek immediate medical assistance. That is the labelled hour.
Do not wait for morning clinic hours. Urology delay is how potency is lost.
What does the label call priapism by hours?
Priapism on this file is a painful erection greater than 6 hours. The care visit still starts at more than 4 hours.
Do not treat 4 hours as 'almost priapism, sleep it off.' The 4-hour line is the action line.
Do not take a second tablet to 'finish'
A partial response is not permission for another 10 mg the same day. Once per day still holds.
The frequency cap is the once-a-day scan.
Anatomical deformity caution
Angulation, cavernosal fibrosis, or Peyronie's disease are reasons to use vardenafil with caution.
Caution is not a ban and not a dare. It is a clinic sentence before the script.
Sudden vision or hearing is also a stop
Stop all PDE5 inhibitors and seek care for sudden vision loss or sudden hearing decrease. Those events have been reported in temporal association.
Headache and flush are the common-reaction scan. They are not these stops.