Question

What is the drawback of parental controlled release systems?

(a) Injecting is a difficulty

(b) The drug cannot be easily removed once administered

(c) Can get easily precipitated in the injection site

(d) Rapid onset but fast excretion

This question was posed to me by my college director while I was bunking the class.

My doubt is from Biopharmaceuticals topic in chapter Biopharmaceuticals of Drug Biotechnology

Answer 1

Right choice is (b) The drug cannot be easily removed once administered

The best explanation: The major drawback of parenteral administration is once the administration is done, the drug cannot be removed easily if an undesirable action happens. If the drug gets precipitated or not needed any more it cannot be removed from our body. These drugs are administered by subcutaneous, intramuscularly, intravenous, intraperitoneal.