Not exactly. Just a fun fact and disclaimer that I use generics if at all possible. But my pharmacology class taught that generics can have higher tolerance of error in % of active ingredient. Not usually a big deal unless the drug has a very narrow therapeutic range, meaning too little doesn’t work and too much will harm you. 99.9% of generics is fine. But if you ever wonder if one batch of your med doesn’t seem to work as well this it’s likely that batch was on the lower end of acceptable.