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Summary: Vitamin B12 treatment typically begins producing early haematological responses within 34 days, with neurological symptoms starting to improve within 12 weeks, though complete symptom resolution may require several weeks to months depending on deficiency severity and treatment route

Since these supplements move through the digestive system, gut health and intrinsic factors play an important role in how much B12 the body absorbs

B12 injections, on the other hand, allow up to 100% absorption and immediate use by the body

Copper peptides don't block DHT but may support scalp health as part of a full plan

Oral supplement: To enhance vitamin B12, choose high-dose oral supplements