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Iodide salts are light-sensitive, so keep stocks in amber or foil-wrapped vessels and re-check identity if a stored solid or solution develops a yellow tint
Common B12 deficiency symptoms include: Persistent fatigue and weakness Tingling or numbness in hands and feet Memory problems and difficulty concentrating Mood changes like irritability or depression Dizziness and balance issues Pale skin or yellowing of eyes Sore, red tongue Some people have a much higher chance of developing B12 deficiency, and understanding these risk factors helps us catch problems early
They replace deficient B12 when absorption or intake is inadequate
For a full buyer-side comparison, see the NAD+ buffered vs unbuffered guide
