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Stack Overview 9 min read

The Clavicular Stack — The 5 Vials, Why Each One, And The Order To Buy Them

Retatrutide, BPC-157, GHK-Cu, SNAP-8, and the CJC-1295 / Ipamorelin blend — the five vials that make up Clavicular's looksmaxxing stack. What each does, why each is on the shelf, and the order to buy them.

The five vials

Clavicular's looksmaxxing stack is a five-layer protocol. Each vial does one specific job. None of them substitute for each other — they stack.

| Layer | Vial | Role | Price |

|-------|------|------|-------|

| Fat loss | [Retatrutide](/products/retatrutide) | Triple GLP-1/GIP/Glucagon agonist for aggressive shred | from $134.99 |

| Gut protection | [BPC-157](/products/bpc-157) | Runs alongside Retatrutide from day one to counter GLP GI effects | $53.99 |

| Skin — GLOW | [GHK-Cu](/products/ghk-cu) | Copper tripeptide for collagen signaling during rapid fat loss | from $45.00 |

| Skin — KLOW | [SNAP-8](/products/snap-8) | Argireline-class topical for dynamic expression lines | $40.50 |

| Lean mass | [Ipamorelin/CJC-1295 Blend](/products/ipamorelin-cjc-1295-blend) | Pulsatile GH support to preserve lean tissue in a deep deficit | from $80.99 |

Layer 1 — Retatrutide (fat loss)

Retatrutide is the core of the stack. It's a triple-agonist: hits the GLP-1, GIP, and Glucagon receptors simultaneously. The glucagon receptor is the differentiator — it raises resting energy expenditure via hepatic fat oxidation and brown-adipose thermogenesis, which the dual-agonist Tirzepatide doesn't do.

Clav's Phase-2 reference data (NEJM 2023 and follow-on Phase-3 TRIUMPH-4) shows −22% to −28% body weight at 48–72 weeks. That's why it's the fat-loss layer, not Tirzepatide.

Vial sizes available: 10 mg, 15 mg, 20 mg, 30 mg. The 30 mg vial is the best $/mg — $9.90/mg vs $13.50/mg for the 10 mg starter.

Layer 2 — BPC-157 (gut protection)

Retatrutide causes GI side effects in ~43% of users during dose escalation (nausea) and ~34% (diarrhea). BPC-157 is what Clav pairs from week one to pre-empt that — not as a rescue, as a prophylactic.

The mechanism: BPC-157 is a 15-amino-acid pentadecapeptide derived from gastric juice protein. It upregulates the VEGFR2/eNOS pathway (angiogenesis, mucosal blood flow) and stabilizes tight junctions in the GI lining. All three of those are the axes that a GLP dose escalation stresses.

One 10 mg vial at $53.99 covers a standard 4–8 week escalation cycle.

Layer 3 — GHK-Cu (GLOW — skin signaling)

Rapid fat loss from a GLP protocol compromises skin quality. GHK-Cu is the vial that addresses that. The tripeptide (glycyl-histidyl-lysine) with bound Cu²⁺ upregulates 4,000+ genes associated with skin repair — collagen I/III/IV synthesis, VEGF (capillary density in dermis), SOD antioxidant defense.

Natural plasma GHK-Cu drops ~60% between age 20 and age 60, which is why it's researched as a replenishment peptide specifically for skin quality under stress.

Sizes: 50 mg at $45 or 100 mg at $80.99. The [GLOW Blend](/products/glow-blend) bundles GHK-Cu + BPC-157 + TB-500 in one vial at $80.99 — cheaper than buying the three singles separately.

Layer 4 — SNAP-8 (KLOW — expression lines)

SNAP-8 (acetyl octapeptide-3) is the topical in the stack. It's a SNAP-25 mimic — competes with native SNAP-25 at the neuromuscular junction to blunt acetylcholine release without complete blockade. The Argireline-class research target.

Unlike the injectables, SNAP-8 is reconstituted and formulated into a topical cream/gel. That's the KLOW protocol.

One 10 mg vial at $40.50. Cheapest vial in the whole stack.

Layer 5 — Ipamorelin / CJC-1295 (lean mass preservation)

Aggressive caloric deficit from a GLP protocol risks lean tissue. The GH-secretagogue stack addresses that axis. CJC-1295 (No DAC) is a GHRH analog at ~30-minute half-life — preserves pulsatile GH release. Ipamorelin is a selective GHS-R1a agonist — no cortisol or prolactin spike like GHRP-6 and Hexarelin.

The pre-mixed [Ipamorelin/CJC-1295 Blend](/products/ipamorelin-cjc-1295-blend) at $80.99 is the cheapest way to run both. Buying Ipamorelin 10 mg ($53.99) + CJC-1295 No DAC 5 mg ($44.99) separately = $98.98. The blend saves $17.99 plus one reconstitution.

Dosing window: 30–60 minutes pre-sleep to amplify the natural nocturnal GH pulse.

Order to buy

You don't need all 5 vials up front. The stack phases cleanly:

  1. First order — Retatrutide 15 mg + BPC-157 10 mg + Bacteriostatic Water 30 mL = $245.67. Ships free (over $200). This is the functional foundation — fat loss + gut protection.
  2. Second order (~4 weeks in, once the GLP side-effect pattern stabilizes) — Add GHK-Cu 50 mg ($45) for skin support. Pair with any refill.
  3. Third order (when ready to add GH support) — Add the Ipamorelin/CJC-1295 Blend ($80.99) and SNAP-8 ($40.50). $121.49 combined.

Total cost — full stack

| Tier | Vials | Cost |

|------|-------|------|

| Foundation | Retatrutide 15 mg + BPC-157 + BAC water | ~$245.67 |

| +GLOW | Foundation + GHK-Cu 50 mg | ~$290.67 |

| +GH | +GLOW + CJC/Ipa Blend | ~$371.66 |

| +KLOW | +GH + SNAP-8 | ~$412.16 |

| Full | All 5 + TB-500 optional | ~$466.15 |

Every tier above Foundation crosses the $200 free-shipping threshold automatically.

Pair with the right bacteriostatic water

All five injectable vials ship lyophilized. You need [bacteriostatic water](/products/bacteriostatic-water) ($11.69 for 30 mL) to reconstitute them. One 30 mL bottle covers 2–4 full vial reconstitutions — budget two bottles on your first foundation order if you plan to add layers over the next month.

Ready to start your research?

Research-grade peptides + bacteriostatic water — shipped fast.