Deriphyllin, which contains the active ingredients theophylline and ephedrine, typically has an onset of action within 30 minutes to 1 hour after administration. The bronchodilator effects can last for several hours, making it effective for managing conditions like Asthma and chronic obstructive pulmonary disease (COPD). However, individual response times may vary based on factors such as dosage and patient-specific characteristics.
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.
Wheezing , breathing disorders
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
the dosage depends on the clinical presentation
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.