---
title: "MIC: what sources report"
url: https://humanpeptides.fyi/peptides/mic
site: humanpeptides.fyi
last_reviewed: 2026-10-11
---


# MIC

> humanpeptides.fyi makes no claims of its own. Every statement below reports what a cited source says, with its link. Not medical advice.

MIC: Compounded 'lipotropic' injection of methionine (amino acid), inositol and choline (often with B12 and sometimes L-carnitine) marketed for fat metabolism/weight loss. The sources cited here most often discuss it for: Fat metabolism, unproven; Liver fat export, choline data; Insulin sensitivity, inositol data. Evidence label: Unstudied.

## At a glance

- **Type:** Not a peptide
- **Family:** Lipotropics & Nutrients
- **Evidence label:** Unstudied (1 of 5)
- **Regulatory status:** Lipo-C, a pharmacy-compounded injection that typically includes the MIC (methionine, inositol, choline) combination, is not FDA-approved, and the complete formulation has not undergone FDA approval for weight loss.
- **Goals discussed:** Fat Loss & Metabolism, Heart, Liver & Kidney
- **Also called:** Lipo-C, LipoB, Skinny Shot, MIC Shot, MIC/B12 shots, lipotropic injections, lipotropic shots
- **Last reviewed:** 2026-10-11

## What is MIC?

- Compounded 'lipotropic' injection of methionine (amino acid), inositol and choline (often with B12 and sometimes L-carnitine) marketed for fat metabolism/weight loss; not peptides; NOT FDA-approved for weight loss. Sources: <https://ronanrx.com/medications/lipotropic-injection/>, <https://rx.com/education/lipo-c-and-tirzepatide-worth-it>

MIC, Lipo-B and Lipo-C are loose labels for pharmacy-compounded lipotropic blends; ingredients and amounts vary by pharmacy, and many add B12, L-carnitine or other B vitamins.

**Regulatory status:** Lipo-C, a pharmacy-compounded injection that typically includes the MIC (methionine, inositol, choline) combination, is not FDA-approved, and the complete formulation has not undergone FDA approval for weight loss. Source: <https://www.seekpeptides.com/blog/articles/lipo-c-peptide>

## What is MIC researched for?

### 1. Fat metabolism, unproven

- Marketed to boost fat metabolism and weight loss, but no meaningful added weight loss shown beyond diet in controlled studies (review/clinic blogs) Sources: <https://www.empiremedicaltraining.com/blog/weight-loss-do-mic-b12-really-works/>, <https://startbeinghealthy.com/are-weight-loss-shots-with-b12-the-secret-to-reduce-weight/>, <https://rx.com/education/lipo-c-and-tirzepatide-worth-it>
- Goals: [Fat Loss & Metabolism](https://humanpeptides.fyi/objectives/fat-loss)

### 2. Liver fat export, choline data

- Choline supports liver fat export: choline deprivation causes reversible fatty liver, and choline repletion reversed steatosis (human controlled depletion study and TPN RCT) - relevant only if deficient Sources: <https://pmc.ncbi.nlm.nih.gov/articles/PMC2435503/>, <https://pubmed.ncbi.nlm.nih.gov/11531217/>
- Goals: [Heart, Liver & Kidney](https://humanpeptides.fyi/objectives/organs)

### 3. Insulin sensitivity, inositol data

- Inositol (myo-inositol) may lower fasting insulin/HOMA-IR in PCOS (meta-analyses of RCTs, heterogeneous evidence; oral doses, not MIC shots) Sources: <https://exa.ai/library/publication/2vns5x0n5kt>, <https://reference.medscape.com/medline/abstract/35477841>
- Goals: [Fat Loss & Metabolism](https://humanpeptides.fyi/objectives/fat-loss)

## What do researchers and users say about MIC?

> "While many clinics boast about their possible benefits for weight loss, note that very little research has examined the effects of lipotropic injections on weight loss."
>
> Kristeen Cherney, Healthline, Everything You Need to Know About Lipotropic Injections. <https://www.healthline.com/health/lipotropic-injections>

Context: Consumer health explainer on lipotropic injections, medically reviewed by Janelle Duah, MD, updated November 2024.

> "I'm sorry to say that lipotropic shots did not work for me. I was hoping that the weight loss would show some progress, but I didn't notice any big changes."
>
> Anonymous user, r/weightlossdiets, Lipotropic injections Reviews for 2024?. <https://www.reddit.com/r/weightlossdiets/comments/1bbojtp/lipotropic_injections_reviews_for_2024/>

Context: Forum reply in a thread with mixed reports on lipotropic shots.

> "I started LipoB and Vitamin B12 injections about a month ago and feel 100% better."
>
> Anonymous user, r/Zepbound, MIC Shot/Skinny Shot (lipotropic injections). <https://www.reddit.com/r/Zepbound/comments/1iydj6z/mic_shotskinny_shot_lipotropic_injections/>

Context: User also taking a GLP-1 medicine and going through menopause, describing energy rather than weight change.

## What side effects of MIC are reported?

- Generally low risk: injection-site pain, mild GI upset reported; compounded product quality varies (clinic guides) Sources: <https://formblends.com/articles/glp1-hub/mic-b12-injections-dosage-complete-guide-to-lipotropic-injection-protocols>, <https://ronanrx.com/medications/lipotropic-injection/>
- A temporary fishy body odor from trimethylamine produced when choline and carnitine are metabolized. (anecdotal) Sources: <https://www.seekpeptides.com/blog/articles/lipo-c-peptide>
- Allergic reactions such as hives, swelling or trouble breathing are listed as rare. (anecdotal) Sources: <https://www.seekpeptides.com/blog/articles/lipo-c-peptide>
- Choline injections caused severe skin inflammation and hard nodules at the injection areas in one 2021 report. (case report) Sources: <https://www.healthline.com/health/lipotropic-injections>
- Blends containing B12 are flagged as unsuitable for people with Leber's hereditary optic neuropathy. (anecdotal) Sources: <https://www.seekpeptides.com/blog/articles/lipo-c-peptide>

## What do peptide guides say about MIC?

- **Seek Peptides:** Seek Peptides admits Lipo-C cannot cause weight loss without diet changes, cannot replace exercise and does not work as a standalone obesity treatment; it also notes concentrations vary between pharmacies. <https://www.seekpeptides.com/blog/articles/lipo-c-peptide>
- **Healthline:** Healthline reports very limited research on the efficacy and safety of lipotropic injections, and says any weight lost is likely due to diet and exercise rather than the shots. <https://www.healthline.com/health/lipotropic-injections>
- **Mayo Clinic:** Mayo Clinic says there is no solid proof that B12 shots, a common MIC add-in, help people lose weight. <https://www.mayoclinic.org/healthy-lifestyle/weight-loss/expert-answers/vitamin-b12-injections/faq-20058145>
- **Healthline:** Healthline notes lipotropic shots are mostly given in med spas and weight-loss clinics, where providers may not be medical doctors. <https://www.healthline.com/health/lipotropic-injections>

## What does the research say, system by system?

### Body & tissues

- Liver: choline needed to prevent fatty liver; 77% of men developed fatty liver or muscle damage on choline-deficient diet (human) Sources: <https://pmc.ncbi.nlm.nih.gov/articles/PMC2435503/>, <https://pmc.ncbi.nlm.nih.gov/articles/PMC2909293/>

### Hormones & physiology

- Myo-inositol improves insulin sensitivity markers in PCOS (meta-analysis) Sources: <https://reference.medscape.com/medline/abstract/35477841>
- B12 component corrects deficiency only (NIH) Sources: <https://ods.od.nih.gov/factsheets/vitaminb12-healthprofessional/>

### Weight & metabolism

- No meaningful weight loss beyond diet in small trials; reported results confounded by diet, GLP-1 use, clinic accountability (reviews, Reddit) Sources: <https://formblends.com/articles/glp1-hub/mic-b12-injections-reviews-patient-experiences-results>, <https://www.reddit.com/r/Zepbound/comments/1iydj6z/mic_shotskinny_shot_lipotropic_injections/>, <https://www.reddit.com/r/weightlossdiets/comments/1bbojtp/lipotropic_injections_reviews_for_2024/>

### Also notable

- Often sold as add-on to GLP-1 programs ('Lipo-C with tirzepatide') without evidence of added benefit Sources: <https://rx.com/education/lipo-c-and-tirzepatide-worth-it>

## How strong is the evidence for MIC?

**Unstudied** (1 of 5). Weak: individual ingredients have biological roles (choline/liver, inositol/PCOS) but no good evidence MIC injections cause weight loss; mostly marketing + anecdotes

_No direct studies of this product or blend. Anecdote and component data only._

## Questions about MIC

### What is MIC?

Compounded 'lipotropic' injection of methionine (amino acid), inositol and choline (often with B12 and sometimes L-carnitine) marketed for fat metabolism/weight loss. MIC, Lipo-B and Lipo-C are loose labels for pharmacy-compounded lipotropic blends; ingredients and amounts vary by pharmacy, and many add B12, L-carnitine or other B vitamins.

### Is MIC FDA-approved?

Lipo-C, a pharmacy-compounded injection that typically includes the MIC (methionine, inositol, choline) combination, is not FDA-approved, and the complete formulation has not undergone FDA approval for weight loss.

### What is MIC researched for?

The sources cited on this page most often discuss three outcomes: Fat metabolism, unproven; Liver fat export, choline data; Insulin sensitivity, inositol data. Each line above shows what the source reports and how strong that evidence is.

### What side effects of MIC are reported?

Reported in the cited sources: Generally low risk: injection-site pain, mild GI upset reported; compounded product quality varies (clinic guides); A temporary fishy body odor from trimethylamine produced when choline and carnitine are metabolized; Allergic reactions such as hives, swelling or trouble breathing are listed as rare. The list is not complete, and few listed risks does not mean a compound is safe.

### How strong is the evidence for MIC?

Evidence label: Unstudied. Weak: individual ingredients have biological roles (choline/liver, inositol/PCOS) but no good evidence MIC injections cause weight loss; mostly marketing + anecdotes.

### What else is MIC called?

Names used for it include Lipo-C, LipoB, Skinny Shot, MIC Shot, MIC/B12 shots, lipotropic injections, lipotropic shots.

### Does humanpeptides.fyi recommend MIC?

No. humanpeptides.fyi makes no claims and no recommendations of its own. It summarizes and links to what others have published and posted. Nothing here is medical advice; talk to a licensed clinician.

---
Family: [Lipotropics & Nutrients](https://humanpeptides.fyi/peptides?cat=nutrient). HTML version: <https://humanpeptides.fyi/peptides/mic>. Disclaimer: <https://humanpeptides.fyi/disclaimer>