Earlier quoted context omitted.
If your doctor recommends to take a specific dose, take the specific dose. Don't half it. Taking half of stuff can also cause further damage. Like with antibiotics, where it can lead to bacteria becoming resistant. So don't be the "smarter" person. Do as your doctor says and if you have doubts, consult another doctor before just doing what you think is safe, but actually isn't.
Is this not the case for OTC drugs? Specifically, the two mentioned in the article. I rarely take either of them, but if my doctor tells me to take 1 ibuprofen every 6 hours or so, if I halve that am I actually doing more damage?
In general, taking a lower dose than recommended can cause problems, but aside from antibiotics, the problems are probably going to be from insufficiently treating the underlying condition, rather than the medication itself. Most OTC drugs give a single recommended dosage for all adults, so some people will necessarily get a lower "effective" dose than others (eg. a 200 lb man compared to a 90 lb woman).
> Specifically, the two mentioned in the article. [...] but if my doctor tells me to take 1 ibuprofen every 6 hours or so, if I halve that am I actually doing more damage?
With the caveat that I'm not a doctor, you should be fine: the only effect of acetaminophen is pain suppression, so if the pain is tolerable, then you should be fine. Ibuprofen has some anti-inflammatory effects that could be important here, but realistically, if the anti-inflammatory effects are the primary reason for the prescription, then your doctor is more likely to prescribe naproxen or celecoxib.
But if this ever comes up for you again, probably the best solution would be to tell your doctor/pharmacist "I have a high pain tolerance, would it be okay if I take less?", since in my experience, medical practitioners are generally pretty happy to hear when you want to take less drugs.