What is pharmacokinetics and what are its main stages?

[joeygiron]

I was watching a medical video yesterday and they kept mentioning “pharmacokinetics.” It reminded me of when I took antibiotics a few years back and the doctor explained how the medicine travels through the body. I didn’t really get it at the time. I know it’s something about how drugs move and act in the body, but what exactly are the main stages people usually talk about?

[hemogif293]

Pharmacokinetics is basically how the body handles a drug: absorption, distribution, metabolism, and excretion. When I first read about growth hormones, I found a clear breakdown on hghworld . It made sense of why some meds kick in fast while others take longer — I had the same “aha” moment when comparing pills versus injections.