Store bought multivitamins aren't even guaranteed to rule it out. For a myriad of different reasons, you can still have deficiencies even if you take a multivitamin. So, maybe it's worth a try, but if it doesn't work, that doesn't mean there couldn't still be a deficiency.

[–] kibiz0r@midwest.social 6 points 5 months ago

Recently did some research on what the treatment would be for a particular deficiency.

Found that general-purpose multivitamins provide about 0.5% of the therapeutic amount.

So yeah, there can be a massive difference between the little bit of help a multivitamin can give vs. what you really need for a specific condition.