Shruti Das Shruti Das Asked 8 months ago

Do vitamin b complex cause weight gain?

I recently started taking vitamin B complex supplements for energy, but I've noticed a slight increase in my weight. I'm concerned, do vitamin B complex cause weight gain?

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5 answers

Sunita Rao Sunita Rao Joined May 2026 5 months ago
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Vitamin B complex itself has zero calories, so it cannot directly cause fat gain. However, it improves your metabolism and can increase your appetite, which might lead to eating more if you aren't mindful.

Pranav Shah Pranav Shah Joined Jan 2026 8 months ago

Don't stress too much, buddy! It won't make you gain weight out of nowhere. It just helps your body convert food into energy better, so any weight change is usually just from eating more because you feel more active.

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Sanjay Nair Sanjay Nair Joined Feb 2026 8 months ago

Please ask your physician clearly about why they prescribed it. Some people feel they are gaining weight because of fluid retention, but only a doctor can explain if it's the supplement or something else.

Manpreet Kaur Manpreet Kaur Joined Mar 2026 7 months ago

My son was prescribed B complex because he was feeling very weak, and his appetite definitely improved after that. It didn't make him gain unhealthy weight, it just brought his healthy appetite back.

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Neha Kulkarni Neha Kulkarni Joined Jun 2026 4 months ago

If you are experiencing sudden weight gain after starting B complex, get a thyroid panel and basic blood tests done. It is better to get a complete diagnosis rather than assuming it's just the vitamins.

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