Is 20mg of dilaudid a lot?

Yes. That is a very large amount of dilaudid. Dilaudid is a powerful narcotic and opioid naive patients will normally start around 1-2 mg. I am not sure why you are asking, but please do not take this large of a dose and if you have and you do not normally take opioids, please have someone take you to the er. Otherwise, a 20mg dose at once should be avoided. I hope this answer helps.
YES!!! Dilaudid is a powerful narcotic. In any situation, taking 20mg Dilaudid is quite excessive. Please see your doctor or go to er immediately for evaluation.