Comparison
Berberine vs CJC-1295
Side-by-side of Berberine and CJC-1295. Every row below is pulled from the compound schema and will update as our data grows. For deeper reads, follow through to each compound page.
Berberine
Berberine supplement guide: 1500 mg/day lowers fasting glucose and HbA1c, AMPK activation, metformin parity in RCTs, dihydroberberine absorption.
CJC-1295
CJC-1295 peptide profile: GHRH analog forms (with-DAC ~7-day half-life, no-DAC Mod GRF 1-29 ~30 min), ipamorelin pairing, recovery use, dosing, side effects.
Effects at a glance
Berberine
- •Lowers HbA1c by ~0.7% versus placebo at 1500 mg/day across 27-trial meta-analysis (Lan 2015)
- •Roughly comparable to metformin on fasting glucose and HbA1c in small head-to-head RCTs (Yin 2008)
- •Reduces LDL cholesterol 10-20% and triglycerides 15-25% via PCSK9 inhibition
- •Activates AMPK, the cellular energy sensor that drives insulin-independent glucose uptake
- •Oral bioavailability under 1%; dihydroberberine is the higher-absorption alternative at lower doses
- •GI side effects affect 10-30% at 1500 mg/day; split dosing with meals reduces incidence
CJC-1295
- •GHRH analog that binds the GHRH receptor on pituitary somatotrophs to release endogenous GH
- •DAC variant has ~7 day half-life via albumin binding; non-DAC variant ~30 minutes
- •Teichman 2006 trial showed sustained 2 to 10 fold IGF-1 elevation at 60 to 250 mcg/kg DAC dosing
- •Anecdotal protocols pair non-DAC CJC-1295 with Ipamorelin to mimic pulsatile GH release
- •Side effects: water retention, numbness or tingling at injection site, vivid dreams, transient flushing
- •No completed phase III RCTs; research-use-only and not FDA approved
Side-by-side
| Attribute | Berberine | CJC-1295 |
|---|---|---|
| Category | natural | peptide |
| Also known as | berberine HCl, berberine hydrochloride | CJC-1295 DAC, CJC-1295 no-DAC, Mod GRF 1-29, tesamorelin analog |
| Half-life (hr) ↗ | 3 | 168 |
| Typical dose (mg) ↗ | 1500 | 0.1 |
| Dosing frequency | 3x daily with meals | weekly (DAC); 1-3x daily (non-DAC) |
| Routes | oral | subcutaneous |
| Onset (hr) | 2 | 1 |
| Peak (hr) | 3 | 3 |
| Molecular weight | 336.36 | 3367.83 |
| Molecular formula | C20H18NO4+ | C152H252N44O42 |
| Mechanism | Activates AMP-activated protein kinase (AMPK), suppressing hepatic gluconeogenesis and lipogenesis while increasing peripheral glucose uptake. Inhibits PCSK9 transcription, modulates bile acid signaling, and shifts gut microbiome composition. | Binds the GHRH receptor on pituitary somatotrophs, stimulating pulsatile growth-hormone release. The DAC modification extends plasma residence by tethering the peptide to serum albumin via a maleimide-cysteine bond. |
| Legal status | Dietary supplement (US, EU, UK, Canada); Rx in some Asian jurisdictions | Not FDA approved; research-use-only grey market; banned by WADA |
| WADA status | allowed | banned |
| DEA / Rx | Not scheduled | Not FDA approved; not scheduled; research-chemical status |
| Pregnancy | Contraindicated (kernicterus risk in neonates) | Insufficient data; not recommended |
| CAS | 2086-83-1 | 446262-90-4 |
| PubChem CID | 2353 | 91971820 |
| Wikidata | Q411435 | Q5012154 |
Safety profile
Berberine
Common side effects
- constipation
- diarrhea
- abdominal cramping
- flatulence
- nausea
Contraindications
- pregnancy
- lactation
- neonatal jaundice
- severe liver disease
Interactions
- metformin: additive HbA1c reduction; additive GI side effects(moderate)
- insulin or sulfonylureas: additive hypoglycemia risk; dose adjustment may be required(major)
- statins (simvastatin, atorvastatin): CYP3A4 inhibition raises statin plasma levels(moderate)
- cyclosporine: raises cyclosporine levels through CYP3A4 and P-gp inhibition(major)
- calcium channel blockers (amlodipine): elevated plasma levels via CYP3A4 inhibition(moderate)
CJC-1295
Common side effects
- injection-site reactions
- water retention
- numbness or tingling at injection site
- vivid dreams
- transient flushing
- head pressure or mild headache
Contraindications
- pregnancy
- active malignancy
- diabetic retinopathy (theoretical)
- history of pituitary tumor
Interactions
- Ipamorelin: synergistic GH release; commonly co-administered in anecdotal protocols(minor)
- insulin: GH-induced insulin resistance can shift glycemic control over weeks(moderate)
- corticosteroids: blunt GH-axis response; reduce expected efficacy(moderate)
Which Should You Take?
Berberine comes out ahead for most readers on the criteria we weight: 3 catalogued goals, OTC dietary supplement, oral dosing, with a Tier-B outcome catalogued. CJC-1295 is the right call when one of the conditionals below applies.
- → If your priority is metabolic health and glucose control, pick Berberine.
- → If your priority is healthspan extension, pick Berberine.
- → If your priority is post-training recovery, pick CJC-1295.
- → If your priority is growth-hormone axis, pick CJC-1295.
Edge case: If you want to avoid research-only / gray-market sourcing, Berberine is the more accessible choice.
Default choice: Berberine. Lower friction to source, and broader goal coverage. Reach for CJC-1295 only if your priority sits squarely in the goals it owns above.
This verdict is generated from each compound's schema (goals, legal status, evidence outcomes, dosing route). It updates automatically as our compound data evolves; the deeper read sits on each individual compound page.
Common questions
What is the difference between Berberine and CJC-1295?
Berberine and CJC-1295 differ in category (natural vs peptide), mechanism, and typical dosing. See the side-by-side table for full details.
Which has a longer half-life, Berberine or CJC-1295?
Berberine half-life is 3 hours; CJC-1295 half-life is 168 hours.
Can you stack Berberine with CJC-1295?
Stack compatibility depends on mechanism overlap, legal status, and individual response. Check each compound page for specific interactions and contraindications before combining.
Go deeper