Erection lasting over 4 hours

If you use an erection medicine, an erection that won't go down after 4 hours needs emergency care. It isn't an effect of GLP-1 medicines.

When to get care

• Now

  If you use an erection medicine and an erection lasts more than 4 hours, get emergency care now.

  This isn't an effect of GLP-1 medicines. The label of tadalafil, a common erection medicine, says to seek emergency treatment.

It can happen with erection medicines. The label of tadalafil, a common one, says to seek emergency treatment if an erection lasts more than 4 hours.

The GLP-1 labels reviewed don't describe an interaction with erection medicines. Nitrates must never be combined with erection medicines.