Can Viagra make haemorrhoids worse or cause bleeding? It is not a known effect — one case report exists. Haemorrhoidal bleeding is not among the side effects on the Viagra label; a single case of bleeding piles linked with sildenafil was published in 2001. If you have piles that bleed, sildenafil is not known to be off-limits, but any rectal bleeding needs a doctor's look whatever you take.
Does Viagra cause bleeding?
Not in the usual sense. In the label's studies, sildenafil did not add to the effect of aspirin on bleeding time (EMA). The Australian Viagra leaflet does list bleeding from the nose among its side effects (Viagra CMI). For men with a bleeding disorder or an active stomach ulcer, the label says sildenafil should be used only after a careful weighing of benefit and risk, because there is no safety information for them (EMA).
Can Viagra make haemorrhoids worse?
There is no good evidence that it does. The idea is that sildenafil widens blood vessels, and haemorrhoids are swollen blood vessels — but the only published report is a single case of haemorrhoidal bleeding associated with sildenafil (Sheikh et al., 2001). One case shows it can happen; it does not show how often, or that the tablet was the cause.
Does Viagra thin the blood?
No — it is not a blood thinner. That question is answered in does Viagra thin the blood?
When should you see a doctor?
Whenever you notice blood from your back passage. Bleeding piles are common, but rectal bleeding can also come from other causes a doctor needs to rule out. Mention any ED medicine you take — and a blood thinner, if you are on one.
Can haemorrhoids cause erectile dysfunction?
That is the reverse question, answered in can haemorrhoids cause erectile dysfunction?
The short answer
Bleeding piles are not a known side effect of Viagra; there is one case report, and the label found no effect on bleeding time with aspirin. Men with a bleeding disorder need a doctor's assessment before sildenafil, and any rectal bleeding deserves a check. More special situations are covered in our guide to special conditions.
