I just bought generic metformin, does it work the same as the brand name?
My doctor prescribed me metformin for prediabetes and at the pharmacy they gave me the generic version which is way cheaper. Should I trust that it's just as effective?
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Worried that it's less potent because it's cheaper? Generic metformin has exactly the same active ingredient as the brand name version, so it works the same way! Generics have to pass the same quality control and efficacy tests as brand names - it's mandatory. The only difference is usually the price and maybe some additives that don't affect the final result, so you can feel confident taking the one you were given.
Generic metformin has exactly the same active ingredient as any brand, so in terms of effectiveness it's identical. Generics go through the same quality controls as brand-name ones, just without the marketing and fancy packaging costs. Your doctor prescribed you metformin for its active ingredient, not for a specific brand, so you're in the same place.
What can vary a bit between generics is how the pill breaks down in your stomach or what additives they use to shape it, and that can affect how quickly it gets absorbed. If after using this generic for a couple of weeks you notice your glucose levels aren't dropping like you expected, or if it causes stomach discomfort you didn't have with another version, it's worth mentioning to your doctor. Sometimes switching generics (there are several manufacturers) can make a small difference, but that's exceptional.
What matters is being consistent: use the same generic regularly so your body adapts, keep up the diet and exercise habits that go hand in hand with the medication, and check your levels when your doctor asks you to. The lower price doesn't mean it works worse, it just means someone else simply didn't spend millions on advertising.
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