Metabolic & Weight Loss · 2026 Protocol Guide
Retatrutide Protocol — Beginner to Advanced
Complete Retatrutide dosing protocol with three tiers (Beginner / Intermediate / Advanced), cycle structure, stack pairings, and where to source each component at the lowest current price. Evidence based, updated weekly, with every sourcing link disclosed.
Quick reference
Typical dose
1000 mcg
Frequency
Once weekly subcutaneous injection
Cycle length
Ongoing; dose escalation over 24+ weeks
Route
subcutaneous
Retatrutide protocol tiers
Beginner Tier
12 weeksFirst-cycle protocol. Conservative dose, twice-daily timing for steady state, shorter cycle to evaluate response before extending.
Dose
500 mcg
Frequency
Once weekly subcutaneous injection
Weekly adjustment
Hold dose constant; track response week-by-week.
Intermediate Tier
24 weeksStandard published-research protocol. Mid-range dose, daily or split-daily, full cycle length matching the canonical clinical/research timeframe.
Dose
1000 mcg
Frequency
Once weekly subcutaneous injection
Weekly adjustment
Stable dose; reassess at midpoint and final week.
Advanced Tier
30 weeksHigher-dose research-tier protocol. Only after a successful Intermediate cycle. Closer monitoring required; bloodwork recommended where applicable.
Dose
1500 mcg
Frequency
Once weekly subcutaneous injection
Weekly adjustment
Monitor markers weekly; titrate down at first sign of saturation or side effect.
Where to source for this protocol
Research profile
Mechanism, half-life, peer-reviewed studies for Retatrutide.
Dosage guide
Numerics + frequency + titration guidance for Retatrutide.
Reconstitution calculator
Vial size + BAC water → concentration, syringe units, doses per vial.
Retatrutide protocol FAQ
How long is a typical Retatrutide protocol?
Standard Retatrutide protocols run 24 weeks for a full Intermediate cycle. Beginner cycles compress to ~12 weeks for response assessment. Advanced cycles extend to ~30 weeks but require closer monitoring.
What's the safest dose to start a Retatrutide cycle with?
The Beginner tier starts at 500 mcg once weekly subcutaneous injection, half the published Intermediate-tier dose. Hold for 2-3 weeks to assess tolerance and response, then escalate to the standard 1000 mcg if no adverse signals.
Do I need to cycle off Retatrutide?
Cycling depends on the compound's mechanism. Receptor-saturating compounds (most peptides) benefit from 4-6 week off-cycles between protocols to prevent downregulation. Non-saturating compounds (some healing peptides) can run continuously. The full Retatrutide research profile covers this in detail; see the cross-links below.
Can I stack Retatrutide with other compounds?
Stacking is common for synergistic effects, but each compound's mechanism, half-life, and route of administration matter. Use the BodyHackGuide stack builder + interaction checker to validate any pairing. The "Where to source" section below ranks vendors who carry Retatrutide alongside complementary compounds in one shipment.
Research-use disclaimer. All protocols on this page are summaries of published research literature and community-reported dosing — they are not medical advice and not authorization for human consumption. Compounds linked from this page are sold for research-use only by their respective vendors. Always consult a licensed practitioner before any compound enters a clinical context.
Affiliate disclosure. BodyHackGuide may earn a commission from purchases via the links on this page — at no additional cost to you. Vendor rankings are based on live price-per-mg data and the published Trust Score rubric. See our affiliate disclosure for details.
Free 2026 Peptide Cheat Sheet — 50 pages, PDF
Reconstitution math, concentration charts, half-lives, and vendor trust tiers. The reference we wish we had on day one.