A Cochrane review supports the use of high-dose vitamin B 12 (1 mg and 2 mg daily) in elevating serum vitamin B 12 level and achieving haematological and neurological responses, even in patients with PA or with ileal resection.58 The recommendation for oral replacement is 1 mg daily for a month, and then 125 to 250 g daily as maintenance dose for patients with dietary insufficiency and food-cobalamin malabsorption, while for PA the maintenance dose is 1 mg daily.29 Vitamin B 12 does not have side-effects even when prescribed in large doses.59 However, hypokalaemia, resulting from uptake of circulating potassium by newly growing and dividing haematopoietic cells, can be severe or sometimes life-threatening
GHK-Cu Dosing Protocol & Schedule GHK-Cu is researched through two very different routes: subcutaneous injection of a reconstituted vial and topical application of a cream, serum, or microneedling-adjacent formulation
Management: Limit use to 46 week cycles with at least equal time off Consider using GH peptides like GHRP2 or CJC1295 during off cycles to maintain baseline IGF-1 activity Risk of Unwanted Growth (Organs, Gut, Tumors) Long-term, excessive IGF1 can theoretically increase the risk of visceral organ growth , insulin resistance , or even tumor promotion , due to its role in cell proliferation
Hence, more studies with human subjects are still required to reach a conclusive decision
