I’ll give you a personal example to show you how weird this stuff can be.
My body seems to metabolize drugs strangely, so I have learned to warn medical staff that after giving me what would seem to be the right dosage, wait longer than usual before determining I might need more. I’ve had a few too many instances of getting too much medication (including pitocin…a torture device at the best of times) because the initial dose didn’t hit until maybe 20-30 minutes after it was supposed to.
And there are cold medications I cannot take at all because I have a rare-but-known negative reaction to one of the ingredients.
Dosages have to be individualized for all sorts of reasons.
