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What If You Need Human Pharmacokinetic Data for Protocol Design
Your clinician will ask about your diet, symptoms, and general health
Choose methylcobalamin if: You have confirmed MTHFR mutations Elevated homocysteine levels Neurological or mood symptoms You tolerate methylated supplements well Choose hydroxocobalamin if: Sensitive to methyl-B12 (anxiety, insomnia) Histamine intolerance or MCAS Need gentle, balanced B12 support Want detoxification benefits Choose adenosylcobalamin if: Chronic fatigue is your primary concern Mitochondrial dysfunction Want to combine with methyl-B12 for comprehensive support Consider combination formulas: Many practitioners recommend combining forms: Methyl-B12 + Adeno-B12 (methylation + energy) Hydroxy-B12 + Adeno-B12 (gentle + energy) All three forms for comprehensive support The bottom line: For MTHFR mutations, methylcobalamin is typically most effective for supporting methylation and lowering homocysteine
Tang J, Zeng C, Cox TM, Li C, Son YM, Cheon IS, et al
State Lyophilized (powder) Storage -4F (-20C) long-term Notes Per supplier safety data sheets, the lyophilized peptide is stable for one year or more under freezer storage
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