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Signs and symptoms of vitamin B12 deficiency can include fatigue, pale skin, headaches, shortness of breath, fast heartbeat, gastrointestinal issues, mouth inflammation, paresthesias (abnormal sensations), decreased cognitive ability, depression, muscle weakness, imbalance and incoordination, vision problems, and erectile dysfunction
The speed of response depends on factors including the severity and duration of deficiency, the presence of neurological complications, and individual metabolic differences
The US and Europe, but not the UK, recommend higher levels for pregnant and breastfeeding women
Dosing errors and excessive doses More is not better with peptides
Store in a cool, dry place, away from direct sunlight.
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