Police have charged a man following an armed robbery at Mooloolaba this afternoon.

It will be alleged that around 2.10pm, a man entered the Brisbane Road pharmacy armed with a knife and made demands for prescription drugs.

After receiving a sum of drugs, the man attempted to run down Brisbane Road but was detained outside of the pharmacy by a male shop assistant and two members of the public.

Police arrived a short time later and apprehended the man without incident.

No one was physically injured during the robbery.

The 31-year-old Parklands man was charged with one count of armed robbery and is due to appear in the Maroochydore Magistrates Court tomorrow.