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2 mg (2000 mcg) once daily subcutaneously, the FDA-approved regimen, after an optional 1 mg first-week titration

If you have the MTHFR polymorphism, you could benefit from the active form of folate (5-MTHF or methylfolate), which may be more bioavailable

Lu G, Wang X, Liu J, Yu K, Gao Y, Liu H, Wang C, Wang W, Wang G, Liu M, Mao G, Li B, Qin J, Xia M, Zhou J, Liu J, Jiang S, Mo H, Cui J, Nagasawa N, Sivasankar S, Albertsen MC, Sakai H, Mazur BJ, Lassner MW, Broglie RM (2014) Application of T-DNA activation tagging to identify glutamate receptor-like genes that enhance drought tolerance in plants

In addition, TG2 expression is upregulated in many cancer cells 9,10,11,12