Before going to the hospital in Copenhagen, you are required to call first (+45) 1813 or else you will not be admitted. If you are in need of the IR,  Bispebjerg Hospital, located in Bispebjerg Bakke 23, has 24/7 emergency ward, you can call them +45 3531 3531
If you need a pharmacy, just look for a green letter A, and there is also a pharmacy working 24/7 Called Steno Apotek at Vesterbrogade 6C.