Lipo-B

Lipo-B is a lipotropic injection that combines Methionine, Inositol, Choline (MIC), and Vitamin B12 into a single formulation designed to support fat metabolism, liver function, and energy production. Lipotropic compounds are substances that help the body process and remove fat from the liver — preventing fat accumulation and supporting the metabolic pathways that convert stored fat into usable energy.

While Lipo-B isn't technically a peptide, it's one of the most popular injectable formulations in metabolic medicine and complements peptide protocols exceptionally well. It's included in the Purple Labs Rx lineup because patients consistently seek it out alongside their peptide therapy, and our all-in pricing model makes it more accessible than getting it separately through a clinic.

Each component in the Lipo-B blend serves a specific metabolic function. Methionine is an essential amino acid that assists in breaking down fats in the liver. Inositol, a B-vitamin relative, helps with fat transport and metabolism. Choline supports liver health and the export of fat from the liver. And Vitamin B12 provides the energy cofactor that powers all of these processes.

At $129/mo, Lipo-B is an affordable entry point for patients interested in metabolic support — and it stacks perfectly with AOD-9604 in our Lean & Burn protocol.

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The lipotropic agents in Lipo-B work primarily through the liver — the body's central metabolic processing center. Fat metabolism, toxin elimination, and energy production all flow through liver function, and lipotropic compounds support these processes at multiple points.

Methionine is an essential amino acid that the body cannot produce on its own. It assists in the breakdown of fats within the liver and serves as a precursor to other important compounds, including glutathione (the body's master antioxidant) and SAMe (S-adenosylmethionine), which supports mood and joint health.

Inositol functions as a secondary messenger in the insulin signaling pathway and plays a role in fat transport and metabolism. It helps the liver process and export fats rather than storing them, which supports healthier liver function and improved body composition.

Choline is essential for the production of phosphatidylcholine, a component of cell membranes and a key player in VLDL (very-low-density lipoprotein) assembly — the mechanism by which the liver exports fat into the bloodstream for use as energy. Without adequate choline, the liver accumulates fat rather than mobilizing it.

Vitamin B12 (methylcobalamin) is a critical energy cofactor. It supports red blood cell formation, neurological function, and the methylation cycle — a fundamental biochemical process that influences energy production, DNA synthesis, and detoxification. Many adults are B12 deficient without knowing it, and injectable B12 provides far better bioavailability than oral supplements.

Together, these four components create a metabolic support system that helps your body process fat more efficiently, maintain liver health, and sustain energy levels.

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Fat metabolism support is the primary function of the MIC complex. By enhancing the liver's ability to process and export fat, Lipo-B helps shift your body toward more efficient fat utilization. This isn't a dramatic fat burner — it's metabolic support that helps your body do what it's designed to do, more efficiently.

Energy production improvement comes primarily from B12 but is supported by the entire MIC complex. Patients frequently report more sustained energy throughout the day — not the spike-and-crash pattern of stimulants, but a steady, clean energy that comes from optimized metabolic function.

Liver function support is an underappreciated benefit. The liver processes everything — food, alcohol, medications, environmental toxins, and hormones. Lipotropic agents help the liver perform these functions more efficiently, which has downstream benefits for everything from energy to skin clarity.

Nutrient absorption improves when liver function is optimized. A healthy liver processes nutrients more effectively, which means you get more benefit from the food you eat and the supplements you take.

Mood support is a secondary benefit of the B12 and methionine components. B12 supports neurological function and the methylation cycle, both of which influence mood regulation. Methionine is a precursor to SAMe, a well-known mood-supporting compound.

Complement to peptide protocols is where Lipo-B really shines. The metabolic and liver support it provides creates a better environment for other peptides to work. Fat metabolism peptides like AOD-9604 are more effective when liver function is optimized, and recovery peptides benefit from improved energy and nutrient processing.

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Lipo-B is ideal for anyone seeking metabolic support and sustained energy without stimulants. If you feel like your metabolism has slowed down and you could use more consistent energy, Lipo-B addresses both issues through the same mechanisms.

People pursuing fat loss or body recomposition who want additional metabolic support. Lipo-B works well alongside diet and exercise — and even better alongside fat metabolism peptides like AOD-9604.

Anyone who consumes alcohol regularly, takes multiple medications, or is exposed to environmental toxins. These all place extra demands on liver function, and lipotropic agents help the liver keep up.

Patients who are already on a peptide protocol at Purple Labs Rx and want to add foundational metabolic support. At $129/mo, Lipo-B is an affordable and effective complement to any protocol.

Individuals who suspect they're B12 deficient — common in vegetarians/vegans, adults over 50, and people taking certain medications (particularly proton pump inhibitors and metformin). Injectable B12 bypasses the absorption issues that make oral supplementation unreliable for these groups.

People who have tried oral B-complex supplements without noticing a difference. Injectable delivery provides significantly higher bioavailability, and the addition of the MIC lipotropic complex provides metabolic benefits that B12 alone doesn't deliver.

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Your $129/mo price covers everything. No surprise fees, no consult charges, no membership.

Here's what's included with every Lipo-B order from Purple Labs Rx:

• Provider consultation with a licensed physician in your state
• Prescription written and sent to a licensed 503A compounding pharmacy
• Lipo-B injection (MIC + B12, 35-day supply)
• Free 2-day shipping directly to your door
• Ongoing provider support throughout your treatment
• Secure patient portal access through AsherMD

No insurance needed. No office visits. Everything handled online.

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Lipo-B is administered via intramuscular or subcutaneous injection.

Typical protocol: 1-2 injections per week. Your provider will recommend the optimal frequency based on your goals. Frequency: Once weekly for maintenance, twice weekly for more aggressive metabolic support or during active fat-loss phases. Duration: Most patients use Lipo-B on an ongoing basis. Benefits are maintained with consistent use and diminish when the injections are stopped, as the body's demand for lipotropic agents is continuous. Supply: Each vial provides a 35-day supply. Administration: Intramuscular (IM) or subcutaneous (SQ) injection. IM injection in the deltoid or gluteal muscle is common, though subcutaneous is also effective. Dosing instructions are included with your shipment.

Your provider personalizes the protocol based on your metabolic goals, body composition objectives, and whether you're using Lipo-B standalone or as part of a stack.

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The components of Lipo-B — Methionine, Inositol, Choline, and Vitamin B12 — are all naturally occurring nutrients with well-established safety profiles.

Common side effects are mild:

• Mild discomfort at the injection site (particularly with IM injection)
• Occasional mild GI upset
• Slight energy boost that may affect sleep if injected late in the day

Serious side effects are rare with Lipo-B.

Contraindications: Lipo-B may not be appropriate for individuals who are pregnant or nursing, have a known allergy to cobalt or B12, have Leber's hereditary optic neuropathy, or have certain kidney conditions. Your provider evaluates suitability during intake. Note on B12: If you are taking medications that affect B12 absorption (metformin, proton pump inhibitors), inform your provider. Injectable B12 bypasses the absorption pathway affected by these medications, which is actually an advantage. This information is for educational purposes and does not constitute medical advice. Always follow your prescribing provider's instructions.

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Lipo-B is a key component of the Lean & Burn protocol:

Lean & Burn ($269/mo) — Pairs Lipo-B with AOD-9604 for a comprehensive fat-loss protocol. AOD-9604 activates fat metabolism at the cellular receptor level while Lipo-B provides the lipotropic agents and B-vitamins that support liver processing and energy production. Save $29/mo vs. buying separately.

Lipo-B is also an excellent add-on to any protocol for additional metabolic and energy support.

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