How does Injection differ from oral route in terms of effect and dossage?

[torboy]

Ok, The question here is simple, but yet complex. How would injecting a drug SC (i.e. SC, Skin popping,), injecting a drug IM (i.e. Intramuscular, "muscling") and IV (Intraveneously) affect the dosage of a drug and the frequency of dosing, as opposed to the oral route? is there any standard rule to apply here, or is this based on the properties of the specific drug in question? I'm trying to figure out how to convert a dose based on route of administration, to avoid overdose.

 

[john04ny]

There is no standard rule to apply to dosing you need to look at the drug in question to ensure there won't be any complications based on the route of administration.