This is a commonly referenced study from 1963 claiming a half-life of 5-6 days: nature.com/articles/198200a0 Although I would not cite it as an authority, the six-day half-life has also made it onto the B12 page in Wikipedia, seemingly unchallenged
Nausea is the most frequent side effect, typically emerging within hours to days of the first injection and often improving after 24 weeks as your body adjusts
PMID: 34347962
106 Following pioneering studies that linked CBS overexpression with colorectal and ovarian cancer (Table 1), an increase in the expression of all enzymes involvedindividually or jointlyin the synthesis of H 2 S has also been reported for breast, gastric, lung, liver, bladder, kidney and prostate carcinomas, melanoma, neuroblastoma, glioma and astrocytoma
PMID: 34676557 Solvent & Solubility In Vitro : H 2 O : 50 mg/mL ( 124.41 mM
Un comprimido cada 8 o 12 horas segn criterio mdico