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Older people also absorb less B12 since their stomach acid decreases with age
[2] Pharmacokinetic studies demonstrate rapid systemic distribution with peak plasma levels occurring within 30-60 minutes of intramuscular injection, followed by extensive hepatic storage and enterohepatic recycling
Despite what some sources may say, there's no scientific evidence that taking B12 supplements will increase energy, concentration, memory or mood in people who already have normal B12 levels
You just need to get calories in them even if it's in the form of Friskies
Archived (PDF) from the original on 17 April 2016
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