The release speed might be different.... even between different brands of the same med.
For example, I take nortriptyline from the bran "Norfenazin", it is a regular tablet. I cannot take the same dose from the brand "Paxitibi", it is a coated tablet that release the med more slowly.
It also makes a great different if it is a capsule instead of a tablet, which type of capsule (soft or hard).
__________________
Crazy, inside and aside
Meds: bye bye meds
CPTSD and some sort of depression and weird perceptions
"Outwardly: dumbly, I shamble about, a thing that could never have been known as human, a
thing whose shape is so alien a travesty that humanity becomes more obscene for the vague resemblance."
I have no mouth and I must scream -Harlan Ellison-