The molecule is permeable to cell membranes (confirmed by Caco-2 assay) and highly selective, without inhibitory effect on other SAM-dependent methyltransferases
The problem is that many people are unable to make that conversion in their bodies because they have a genetic mutation that prevents it
Contact your doctor promptly if any side effects persist, worsen, or concern you, or if you experience any other concerning symptoms
Nevertheless, use of metformin may decrease vitamin B 12 status: a meta-analysis of four short-term intervention trials (up to 4 months duration) in patients with type 2 diabetes found that metformin use decreased serum cobalamin concentrations by 57 pmol/L, which could have clinical implications if such patients have suboptimal vitamin B 12 status (146)
Outliers were then removed, and the data were run through the Spearmans-Pearsons Decider again
After 1 year, patients and healthcare providers knew that STELARA was being used