--- title: "HGH Fragment 176-191 vs L-Carnitine: Compared (2026)" url: https://www.bodyhackguide.co/compare/hgh-frag-176-191-vs-l-carnitine description: "Compare HGH Fragment 176-191 vs L-Carnitine side by side. We earn a commission on some vendor links. Mechanism, half-life, dose range, side effects and prices." lang: en --- Skip to content Compare notes on r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Compare notes with other researchers. Join r/BodyHackGuide (https://reddit.com/r/bodyhackguide) # HGH Fragment 176-191 vs L-Carnitine Side-by-side comparison of HGH Fragment 176-191 and L-Carnitine: mechanism, half-life, dose range, safety profile, and vendor pricing. HGH Fragment 176-191 from $49.99 L-Carnitine from $34.99 ## Price snapshot ### HGH Fragment 176-191 Current low $49.99 current listings 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ### L-Carnitine Current low $34.99 current listings 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ## HGH Fragment 176-191 HGH Fragment 176-191 (also written HGH Frag 176-191, hGH Fragment 176-191, and frequently appearing in clinical literature as AOD-9604 — "Anti-Obesity Drug 9604") is a synthetic peptide corresponding to the C-terminal… **Lowest listed price:** $49.99 across 1 listing Full HGH Fragment 176-191 profile (https://www.bodyhackguide.co/compound/hgh-frag-176-191) ## L-Carnitine L-Carnitine is a naturally occurring quaternary ammonium compound synthesized in the body from the amino acids lysine and methionine, with essential cofactor roles in fatty acid metabolism, energy production, and… **Lowest listed price:** $34.99 across 4 listings Full L-Carnitine profile (https://www.bodyhackguide.co/compound/l-carnitine) ## Side-by-side comparison | Attribute | HGH Fragment 176-191 | L-Carnitine | | --- | --- | --- | | Category | Metabolic & Weight Loss | Weight Loss | | Research Stage | Phase 2 (discontinued) | Preclinical | | Mechanism of Action | HGH Fragment 176-191's proposed mechanism of action is grounded in the structural dissection of the native human growth hormone molecule. Full-length hGH (residues 1-191) is a 22 kDa peptide that binds two distinct functional domains to the growth hormone… | L-Carnitine's mechanisms extend beyond the simple "fat-burning nutrient" label. Understanding these mechanisms helps predict where supplementation will and will not produce meaningful effects. The carnitine shuttle — core mechanism. The fundamental role of… | | Half-Life | ~30 minutes (short plasma half-life) | — | | Typical Dose Range | 250-500 mcg | 500 mg - 2000 mg daily (oral or injection) | | Dosing Frequency | Once or twice daily, fasted | — | | Administration | — | — | | Side Effects | HGH Fragment 176-191 / AOD-9604 has been reported as well tolerated in Phase 1 and Phase 2 trials, with side effects that were mostly mild and self-limiting. However, "well tolerated in a Phase 2 trial that failed its primary endpoint" is a different safety… | L-Carnitine has an excellent safety profile across decades of clinical use, with most adverse effects being mild, dose-related, and self-limiting. Serious adverse events are rare. Gastrointestinal effects (most common). Diarrhea, abdominal cramping, nausea.… | | Molecular Weight | 1815.1 g/mol | 161.20 g/mol | | Common Vial Sizes | — | — | ## Price tracking Tracking HGH Fragment 176-191 prices since September 5, 2026. Trend chart unlocks once we have price snapshots from more than one day. ## Price History 3 data points - Half Nattys - Disguised Alpha ### HGH Fragment 176-191: potential benefits - Targeted fat loss - Visceral fat reduction - No insulin resistance - Metabolic improvement - No IGF-1 elevation ### L-Carnitine: potential benefits - Enhanced fat metabolism - Improved exercise performance - Reduced muscle damage and recovery time - Neuroprotective effects (acetyl-L-carnitine) - Mitochondrial function support - Improved insulin sensitivity ## Frequently asked ### What's the difference between HGH Fragment 176-191 and L-Carnitine? HGH Fragment 176-191 is a metabolic & weight loss that hgh fragment 176-191's proposed mechanism of action is grounded in the structural dissection of the native human growth hormone molecule. full-length hgh (residues 1-191) is a 22…. L-Carnitine is a weight loss that l-carnitine's mechanisms extend beyond the simple "fat-burning nutrient" label. understanding these mechanisms helps predict where supplementation will and will not produce…. The two differ in mechanism, half-life (~30 minutes (short plasma half-life) vs not reported), and typical dose range. ### Which has the longer half-life, HGH Fragment 176-191 or L-Carnitine? HGH Fragment 176-191 has a half-life of ~30 minutes (short plasma half-life). L-Carnitine has a half-life of not reported. Longer half-lives generally mean less frequent dosing but slower on/off kinetics. ### Which is cheaper, HGH Fragment 176-191 or L-Carnitine? Lowest listed price on BodyHackGuide: HGH Fragment 176-191 from $49.99, L-Carnitine from $34.99. Prices are pulled from the vendor listings tracked on BHG and change frequently. See the compare tables on each compound page for the current set of offers. ### Can you stack HGH Fragment 176-191 and L-Carnitine? Stacking depends on mechanism overlap, safety profile, and goals. HGH Fragment 176-191 and L-Carnitine should only be stacked after reviewing each compound's individual protocol page, side effect profile, and any published interaction data. Use the BodyHackGuide stack builder for a structured review before combining research compounds. ## See current vendor prices Listings from the vendors we track. Prices change often, so check the vendor before you buy. HGH Fragment 176-191 prices: https://www.bodyhackguide.co/compound/hgh-frag-176-191?tab=prices L-Carnitine prices: https://www.bodyhackguide.co/compound/l-carnitine?tab=prices Compare all compounds: https://www.bodyhackguide.co/compare ### Before you buy HGH Fragment 176-191 or L-Carnitine Check the vendor trust score. Every supplier we track is rated 0-100 on COA verification, payment transparency, shipping, reviews, and listings: one published, reproducible methodology, applied to every vendor. View Vendor Scorecard (https://www.bodyhackguide.co/vendors/scorecard) ## Related comparisons **Research use only.** BodyHackGuide is a research and price-comparison reference. The compounds discussed on this page are not approved by the FDA for human consumption and are sold strictly for laboratory research. Prices shown are pulled from vendor listings tracked on BHG and are subject to change. Every vendor is ranked on the same public, reproducible methodology. See editorial standards (https://www.bodyhackguide.co/editorial-standards) and affiliate disclosure (https://www.bodyhackguide.co/affiliate-disclosure). 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