This article is part of the PlexusDx Education Hub — your resource for evidence-based guidance on longevity protocols, peptide therapies, and the genetic variables that shape every metabolic and aging-related decision. Browse all Peptides & Longevity education

MIC-B12 is dispensed in injectable form for most longevity-protocol programs as of April 2026. This article covers how the injection works, typical dosing rhythm, storage, and the genetic context underneath every MIC-B12 decision.

What MIC-B12 is

MIC-B12 is a compounded combination injection containing methionine, inositol, choline, and vitamin B12 (cyanocobalamin or methylcobalamin). The methionine, inositol, and choline are lipotropic agents — compounds that support fat metabolism in the liver. B12 supports energy metabolism and methylation. MIC-B12 is dispensed through licensed compounding pharmacies; specific formulations vary by pharmacy and prescriber order.

How MIC-B12 works

MIC-B12 acts on the methylation, B12 metabolism, and lipid utilization. Effects on aging-related biology, cognitive performance, energy metabolism, antioxidant defense, or tissue repair (depending on the compound) are mediated through specific receptor or enzymatic pathways. Pharmacological mechanism is well-described in the peer-reviewed literature; clinical effect sizes vary by indication, dosing, individual factors, and adherence.

The genetic variable

Variants in MTHFR, MTRR, COMT shape the baseline biology that MIC-B12 acts on. These genes influence methylation, B12 metabolism, and lipid utilization — the upstream variables every MIC-B12 protocol works through. Variants are pathway-level: they don't predict response to any specific compound, but they describe the metabolic and longevity terrain a clinician is prescribing into. Knowing this profile is the difference between informed decision-making and trial-and-error.

PlexusDx offers MIC-B12 through its Longevity Protocols — see the MIC-B12 product page for current formulation, dosing format, and pricing. What sets the PlexusDx approach apart is the upstream genetic context. Before starting any longevity protocol, the Precision Peptide Genetic Test analyzes 14 pathways, 49 peptides, and 150+ genetic insights — including variants in MTHFR, MTRR, COMT that shape your baseline methylation biology. Knowing that genetic profile alongside the protocol itself is the test before you invest approach — turning guesswork into an informed conversation with your healthcare provider.

Related reading on PlexusDx: GLP 1 Receptor Agonist, GLP 1 Drugs, GLP 1 Hormone, What Is GLP 1.

Disclaimer: This article is educational. PlexusDx offers MIC-B12 through its Longevity Protocols — this article covers the mechanism, evidence, and genetic context that informs any decision to use it. PlexusDx does not sell, prescribe, or recommend ipamorelin, tesamorelin, or other compounds in this category beyond the longevity products in its protocol line. The Precision Peptide Genetic Test analyzes how your genes influence peptide-related biological pathways — it does not predict response to any specific medication. Consult a qualified healthcare provider before beginning any peptide protocol.

Start with the biology underneath every longevity decision. Take the Precision Peptide Genetic Test, or explore the MIC-B12 protocol directly.

Frequently Asked Questions

What is MIC-B12?

MIC-B12 is a longevity-protocol compound with documented effects on the relevant biological pathway. PlexusDx offers compounded MIC-B12 through its Longevity Protocols product line. See the relevant PDP for current mechanism summary, formulation, and pricing. Discuss compound-specific considerations with your prescribing provider before starting.

How does MIC-B12 work?

MIC-B12 acts on its established receptor or enzymatic targets, influencing the underlying biology that shapes longevity-related outcomes. Pharmacology is well-described in peer-reviewed literature. Specific effects depend on dose, format, individual factors, and concurrent interventions. Verify current product details on the relevant PDP before any protocol commitment.

Is MIC-B12 safe?

MIC-B12 has a documented safety profile in the clinical literature. Common side effects, serious warnings, and contraindications vary by compound. Discuss your specific medical history with a prescribing provider. Compounded products from licensed 503A pharmacies follow USP standards for sterility and potency.

Does genetic testing predict MIC-B12 response?

No. The Precision Peptide Genetic Test does not predict response to any specific compound. It analyzes pathway-level variants in MTHFR, MTRR, COMT that shape baseline biology — the upstream context that applies across all longevity-protocol compounds. Discuss compound-specific considerations with your prescribing provider before starting.

This article is part of the PlexusDx Education Hub. Browse all Peptides & Longevity education

Real prescribers. Published prices. No surprises.

Licensed providers in all 50 states. Online intake. No insurance, no membership required.

Start My Intake

~60 seconds · $0 charged until your provider approves