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Description
The shots usually don't hurt, but some people have a slight stinging sensation

Nature Medicine (2024) 9

ANDREW HUBERMAN: Great, what about plastics

Like nasal sprays, capsules are non-invasive and appealing for regular use [10, 24, 26]

Cognitive and clinical outcomes of homocysteine-lowering B-vitamin treatment in mild cognitive impairment: a randomized controlled trial
