On paper, each generic must pass some bio-equivalency test with the FDA. Most of the time all that means is "we at generic brand X ran our own experiments and concluded that we show similar blood concentrations of drug A, to Brand-Name Z." And then every professional involved in that supply chain writes it off as "basically the same," excluding all the little implementation/manufacturing details that go into each specific producer, much less factory (quality control is frankly disturbing in many of these plants).
You won't find a lot of practical information written within scientific literature, aside from basic chemistry/biology (the low-level details). Most of the time the researchers running these experiments have done less research and have less hands on experience than the people who have to use this medication on a daily basis. Many times reading the scientific literature is just a rabbit hole that leads to nowhere, except feeling like "you're on to something."
Apologies for the rant.
[1]: https://www.bluelight.org/xf/threads/what-is-wrong-with-the-...
Certainly need to read some of the research literature and places like /r/DrugNerds (that community is super legit). The public health/doctor-y type websites are the worst for actually getting info since they never go into details and often give bad advice, so I’d stay away from the “traditional” resources if you’re trying to go deep