The onset of action for Demerol (meperidine) typically occurs within 10 to 15 minutes when administered intravenously, and approximately 30 to 60 minutes when given intramuscularly. The peak effects usually occur within 1 to 2 hours after administration. Demerol is an opioid analgesic used for the relief of moderate to severe pain.
The elimination half-life is the indicator of duration of action. The number for morphine is about 2 hours. The number for Demerol is 3 to 6 hours. Demerol has a longer duration of action than morphine.
site of action is the location (site) where the drug do there action ........ while onset of action is the starting of effects produced due to drug............... both are clearly different..........
Prophylaxis or primary prevention mean action delaying onset of disease.
30-90 minutes.
30 to 60minutes
The onset of action for SSRIs (selective serotonin reuptake inhibitors) typically ranges from 1 to 4 weeks before noticeable improvement in symptoms is observed.
An intravenous injection.
Intravenous
IV
Loop diuretics have the quickest onset of action. They are called loop diuretics because they act in the loop of henle in the kidneys. The main loop diuretics are: Furosemide, Bumetanide and Torasemide
Because they are quickly metabolized by the liver.
Demerol is an opiate. I could be wrong but I believe that demerol is a schedule II narcotic.