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Gastrointestinal: Diarrhea or constipation, loss of appetite, weight loss, sore or smooth tongue (glossitis)

Estrogen-driven collagen decline accelerates during perimenopause, and substrate is typically already more depleted at baseline

Intramuscular and subcutaneous are not interchangeable, and the needle follows the route

All reconstitution and handling should be performed under suitable aseptic laboratory conditions

Bolaman Z, Kadikoylu G, Yukselen V (2003) Oral versus intramuscular cobalamin treatment in megaloblastic anemia: a single-center, prospective, randomized, open-label study

Benefits include increased energy levels, improved mood, enhanced mental clarity, better absorption compared to oral supplements, and support for overall health