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If your digestive system isn't working properly, oral supplements can be ineffective
A subcutaneous injection is often the preferred method of administration for vitamin B12 and similar supplements
Intramuscular (IM) Injections: Intramuscular injections deliver B12 directly into muscle tissue, typically in the vastus lateralis (outer thigh) or deltoid (upper arm)
e071725e071725, www.bmj.com/content/383/bmj-2022-071725, Julian, Thomas, et al
Certain peptides, like BPC-157, can cross the blood-brain barrier when administered nasally, allowing them to interact with neurotransmitters and reduce inflammation in the nervous system
