Metabolic · Lipotropic blend · Compounded 503A
Lipo-C: the classic lipotropic injection.
Lipo-C — sometimes called MIC, Lipo-MIC, or Lipotropic-B — is a compounded injectable blend of methionine, inositol, choline, and B12 (often with L-carnitine added). Each component supports a different step of hepatic fat metabolism, energy production, or methylation. It is one of the most widely used adjuncts in medical weight-loss programs.
What Lipo-C is
Lipo-C is a compounded injection containing — at minimum — methionine, inositol, choline, and vitamin B12 (cyanocobalamin or methylcobalamin). Many formulations add L-carnitine, B-complex vitamins, or additional methyl donors.
Each ingredient was traditionally selected for a 'lipotropic' role — supporting the liver's ability to mobilize and metabolize fat. The combination has been used in medical weight-loss clinics since the 1950s.
It is most commonly used as an adjunct to caloric-deficit programs, GLP-1 therapy, or post-bariatric recovery — supplying methylation substrates, energy cofactors, and phospholipid precursors that fat metabolism depends on.
How it works
Methionine is a sulfur-containing amino acid and the primary biological methyl donor (as SAMe). It supports hepatic methylation, phosphatidylcholine synthesis, and homocysteine cycling.
Inositol (myo-inositol most commonly) participates in cell-membrane signaling (PI3K/Akt pathway, insulin signaling) and is implicated in insulin sensitivity.
Choline is the precursor to phosphatidylcholine — required to package triglycerides into VLDL particles for export from the liver. Without adequate choline, the liver accumulates fat (the classic choline-deficiency hepatic steatosis).
Vitamin B12 is required for methionine synthesis (methionine synthase) and for the methylmalonyl-CoA pathway in fatty-acid metabolism. Many patients on metformin or PPIs are mildly B12-depleted.
What patients use it for
Hepatic fat export
Choline and methionine support VLDL assembly — the mechanism by which the liver exports stored triglycerides for use as fuel.
Methylation support
Methionine and B12 provide methyl donors for liver detoxification, homocysteine clearance, and gene-regulatory methylation.
Energy and mood
B12 supports red-cell production and neurologic function. Many patients report subjective energy improvement, particularly if mildly deficient.
Insulin sensitivity (inositol)
Myo-inositol has documented insulin-sensitizing effects in PCOS and metabolic syndrome — relevant alongside GLP-1 therapy.
Evidence summary
Zeisel SH et al. (FASEB J, 1991, and subsequent) — choline deficiency reliably produces hepatic steatosis; supplementation reverses it. The most-cited foundation for the choline component.
Unfer V et al. (Endocr Rev, 2019) reviewed myo-inositol in metabolic and reproductive conditions, including PCOS-associated insulin resistance.
Allen LH (Adv Nutr, 2012) reviewed B12 deficiency prevalence and metabolic consequences in adults.
Direct large-scale RCT evidence for the combined MIC blend as a fat-loss intervention is limited — the components are well-supported individually; the combination is supported by clinical practice rather than dedicated trials.
Dosing and clinical context
General clinical context only. Kindr Health physicians determine the appropriate dose and protocol for each patient based on history and labs. This is not a prescription or dosing recommendation.
Subcutaneous or IM injection, typically 1–2x weekly during active weight-loss programs.
Often paired with GLP-1 therapy (semaglutide / tirzepatide) to support hepatic fat handling during rapid weight loss.
Course-based use during caloric-deficit phases is most common.
Safety and contraindications
Generally very well tolerated. Most-reported issues: transient injection-site warmth, occasional B12-related skin tingling, mild GI upset.
Contraindications: known hypersensitivity to any component, B12-allergic patients, severe renal impairment for some methionine doses.
Compounded by licensed 503A pharmacies; individual components are nutrient compounds rather than scheduled drugs.
Who it's typically considered for
- Patients in medical weight-loss programs alongside caloric deficit
- GLP-1 patients with elevated liver enzymes, NAFLD risk, or rapid weight-loss-related hepatic strain
- Patients on metformin, PPIs, or vegetarian diets with marginal B12 status
- Adults pursuing methylation support alongside metabolic resets
Frequently asked questions
Will Lipo-C make me lose weight on its own?
No. It supports the metabolic infrastructure that handles fat — but a caloric deficit and exercise still drive actual fat loss. It is an adjunct, not a primary therapy.
Lipo-C vs L-carnitine alone?
L-carnitine alone targets mitochondrial fatty-acid uptake. Lipo-C is broader — methylation, hepatic fat export, B12 status, membrane phospholipids. Many protocols use Lipo-C + L-carnitine together (some formulations combine them).
Is Lipo-C safe with GLP-1s?
Yes — and the combination is common. GLP-1s drive rapid weight loss; Lipo-C supports the hepatic and methylation capacity that has to keep up.
Will I feel anything from a Lipo-C shot?
Most patients describe a mild energy lift from B12 within hours. Subjective effects are usually mild; the cumulative metabolic effect builds over weeks.
Is Lipo-C FDA-approved?
The individual components are FDA-recognized nutrients. The compounded blend is dispensed by licensed 503A pharmacies under physician prescription.
How often should I get a Lipo-C injection?
Most weight-loss protocols use 1–2 injections per week during active phases. Your physician will recommend frequency based on labs and goals.
Sources
- Zeisel SH, da Costa KA. Choline: an essential nutrient for public health. Nutr Rev (2009). — pubmed.ncbi.nlm.nih.gov/19906248
- Unfer V et al. Myo-inositol effects in women with PCOS: a meta-analysis of randomized controlled trials. Endocr Connect (2017). — pubmed.ncbi.nlm.nih.gov/29042448
- Allen LH. Vitamin B-12. Adv Nutr (2012). — pubmed.ncbi.nlm.nih.gov/22332093
Considering Lipo-C?
A Kindr Health physician reviews every longevity intake — peptides are prescribed only when medically indicated based on your history and labs. There is no charge for the initial review.
Start your longevity intake →Related peptides
Medically reviewed by Dr. Ana Lisa Carr, MD, MBA
Board-Certified Family Medicine Physician · Lead Provider / Medical Reviewer
NPI 1689841744 · Last reviewed: May 10, 2026
Last reviewed May 10, 2026. Compounded medications are prepared by FDA-registered 503A pharmacies and are not FDA-approved drug products. Prescriptions require a clinical evaluation; a Kindr Health physician determines eligibility. Not for use in pregnancy. This page provides educational information and is not medical advice.