Why are there no “perfect drugs” that work well without side effects?

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It seems like the more potent a drug/medication is, the more risks are involved with it, where as drugs with very little risk don’t help nearly as much.

In: Biology

35 Answers

Anonymous 0 Comments

Consider that a drug is just a chemical compound that is introduced into an extremely complex chemical environment inside your body. It is just not possible to design a chemical compound that will precisely interact with one and only one area inside your body, ignoring everything else (unless we are talking about gene therapy or nanoscale devices – but that’s another story). The drug has to be absorbed somehow and circulated through your system until the active drug molecule finds its match. On top of that, chemicals in our system often share multiple different functions – so either reducing or increasing their levels to treat something is a delicate balance of compromises. Maybe the problem will be temporarily fixed, but at the same time another problem can be generated.

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