Roughly:
- Paracetamol overdose can cause severe liver damage and may be fatal.
- Ibuprofen in high doses can lead to kidney injury and stomach bleeding.
- Aspirin overdose may result in salicylate poisoning, causing ringing in the ears, confusion, and metabolic acidosis.
That is wild.
If true, it would have to be genetic? I mean, unless it is chronic dehydration from their sense of humor?
Together they have higher pain killung effects than each alone, and the side effects are reduced as they affect different body parts. And the vitamin C reduces the damage to the stomach lining.
Meanwhile, taking ibuprofen can negate the effect aspirin has when taken against cardiovascular diseases. Not a huge problem if you're just taking it as a painkiller, but not everyone can combine the two. That's another potential reason to take paracetamol over some NSAIDs, though you should obviously consult a doctor if you're taking prescription medicine of any kind.
There is a rich and varied multidimensional field of danger, from aspects like the safety-margin between regular/dangerous dose levels, the chronology of how it can spike or accumulate, whether there's feedback in advance of damage, etc.
Yeah, I can poison myself drinking clean water, but it's hard.
Oxygen toxicity is not a risk for most people. You either are a scuba diver regularly working at depths beyond what most do or are taking supplemental oxygen while under the care of a doctor. You are not at risk of oxygen toxicity reaching into your bathroom medicine cabinet.