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Warning signs include profound muscle weakness, severe fatigue, or abnormal heart rhythms

PMID 28627191

It is important to recognise that these symptoms are non-specific and can overlap with numerous other conditions, including folate deficiency (which shares similar haematological features but rarely causes neurological symptoms)

If your only question is which works better for weight loss, the evidence is clearer for semaglutide than for lipotropic injections but better still depends on your health profile, goals, and what you can stick with long-term

Vitamin B12 maintains energy levels, supports brain function, and aids red blood cell production

That means the body can more easily use this form of B12, making it more effective