Nat Rev Endocrinol 21 , 6566 (2025)
Cysteine taken by itself is poorly absorbed
Who Benefits Most from Phentermine and When It Makes Sense Phentermine is best suited for: Patients needing a short-term weight loss kick-start Individuals who struggle with frequent snacking or portion control Those transitioning off GLP-1 therapy Patients seeking a cost-effective, accessible option Because it is a Schedule IV controlled substance, its use is typically time-limited and carefully monitored
Inadequate secretion of intrinsic factor, resulting from lesions that destroy the gastric mucosa (ingestion of corrosives, extensive neoplasia), and a number of conditions associated with a variable degree of gastric atrophy (such as multiple sclerosis, certain endocrine disorders, iron deficiency, and subtotal gastrectomy)
In addition to the lack of definitive evidence of efficacy and safety, there is no evidence that clinical outcomessuch as reduced hospitalizations, improved cardiovascular status, and reduced mortalityare improved in patients for whom IV vitamin C treatment is initiated as an ESA adjuvant
