Unfortunately, prescribers pay more attention to starting someone on a drug than taking them off of it. So you want a clear understanding not only how long you should take a drug, but when you should come off of it. For example, diet, exercise and life-style changes may eliminate the need for a drug that may have once made sense. Now it is recognized that patients may be weaned off of blood pressure pills in many cases, as the effect of diet, exercise and life style changes kick in. Avoid medications for minor or transient things whenever possible.
All drugs carry the possibilities of adverse reactions, often serious.
So sometimes its better to endure a minor problem rather than run the risk of a major adverse reaction, drug interaction or some other drug related problem. Try to take as few drugs as possible. As you take more drugs you dramatically multiply your chances of drug interactions and adverse effects. You also decrease your chances of knowing which drug is causing an adverse reaction. You should not ordinarily prescribe one drug to counteract the adverse reaction caused by another drug.