Why are “headaches” an acceptable side effect of medicine used to treat headaches?

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Why are “headaches” an acceptable side effect of medicine used to treat headaches?

In: Biology

Because not everyone experiences all side effects, it may only be that 10-15% of the group tests reported headaches/worse headaches, so enough to warrant it being listed, but not enough to keep it from being sold cuz hey, its gonna work for the majority of people.

If you look at pretty much any drug, they will have a side effect of headache and/or nausea/vomiting/diarrhea. These are just common things that happen. In order to have it listed as a side effect, often it just has to happen enough in the treatment group. It doesn’t always matter if there is a difference between the treatment and control group (I saw a package insert that listed “infection” as a side effect even though infections occurred less frequently in the treatment group than in the control group). Basically, it’s a way to cover one’s ass.

To summarize : people get headaches relatively. Sometimes it occurs when people take medicine. Companies list headache as a side effect as a CYA measure.