Research library — peptide protocols explained

Every page in this library follows the same shape: what the compound is studied for, who it suits and who should leave it alone, the house protocol in milligrams and pen clicks, a week-by-week picture of what people typically notice, the labs we ask for, what it pairs with, and the mistakes we see most often. Nothing on these pages is a sales page; the numbers come straight from the Longevity Bros dosing sheets and nothing is rounded up for effect.

Pick a compound below. If you already know you want a plan written for you rather than for the average researcher, skip to the personal research protocol at the bottom.

The compounds

Repair & recovery

Repair · 8 weeks

Wolverine (BPC-157 + TB-500)

For the researcher nursing a strain, tendinopathy or post-op joint — alongside a rehab plan, never instead of one.

Repair · gut · 8 weeks

BPC-157

For the researcher with a single stubborn tendon, a post-op joint or a gut that will not settle — one compound, low dose, run alongside a rehab plan.

Repair · mobility · 8 weeks

TB-500

For the researcher with a slow-healing muscle or a joint that has lost its range — larger doses twice a week, then once a week, never daily.

Repair · skin · inflammation · 12 weeks

KLOW (BPC-157 + TB-500 + KPV + GHK-Cu)

For the researcher whose slow recovery, skin and gut all seem to share one inflammatory thread — four compounds daily, with copper labs before and after.

Skin & immune

Skin · hair · recovery · 12 weeks

GLOW (BPC-157 + TB-500 + GHK-Cu)

For the researcher chasing skin texture, hair and recovery — with copper labs before and after, no exceptions.

Skin · collagen · hair · 12 weeks

GHK-Cu

For the researcher who wants the skin, collagen and hair signal on its own, without the repair peptides — 1–3 mg a day, copper labs before and after.

Gut · inflammation · 8 weeks

KPV

For the researcher whose gut reacts to everything and whose calprotectin says why — a daily anti-inflammatory tripeptide, judged on labs, not on feel.

Immune · resilience · 8 weeks

Thymosin alpha-1

For the researcher who catches everything, recovers slowly from it, or is heading into a stretch where getting sick is not an option — Monday and Thursday, 1.6 mg, done.

Cognition & sleep

Focus · cognition · 8 weeks

Semax

For the researcher whose mornings are the problem — slow to start, scattered until lunch — who wants sharper hours, not a stimulant.

Calm · stress · 8 weeks

Selank

For the researcher who is wound tight — sharp enough, but running on adrenaline — who wants the edge off without the edge going.

Sleep · recovery · 8 weeks

DSIP

For the researcher who falls asleep fine and wakes at three, or sleeps eight hours and wakes unrefreshed — a tiny pre-sleep dose, judged on a sleep log, not a feeling.

Sexual health

Sexual health · as needed

PT-141 (bremelanotide)

For the adult researcher, of either sex, whose desire has gone quiet while everything mechanical still works — as needed, maximum twice a week, blood pressure checked first.

Metabolic

Fat loss · 12 weeks

Retatrutide

For the researcher carrying real body fat who wants the strongest signal in the class, with lean mass protected.

Fat loss · 12 weeks

Tirzepatide

For the researcher who wants steady appetite control with the gentlest gut — split dosing, lowest effective dose.

Metabolic flexibility · 8 weeks

MOTS-c

For the researcher who already trains and wants the zone-2 and insulin-sensitivity side of that work amplified — dose, then train.

GH axis

Sleep · recovery · 12 weeks

CJC-1295 + Ipamorelin

For the researcher who trains hard and wants deeper sleep and faster recovery from a pulsatile GH signal, not a mega-dose.

Visceral fat · 12 weeks

Tesamorelin

For the researcher whose waist, not weight, is the problem — nightly, fasted, five nights a week, tape measure on Saturdays.

Longevity

Energy · clarity · 8 weeks

NAD+

For the researcher running on fumes after travel or a long stretch of burnout who wants steadier days, not a stimulant.

Sleep · reset · 10-day course

Epithalon

For the researcher coming off a travel-heavy stretch or a period of burnout who wants a reset, not another thing to run continuously.

How to read these pages

One pen = 300 clicks. Every house pen is pre-mixed and dosed by turning the dial; the pages give the micrograms or milligrams per click so you can check our arithmetic.
"Studied for" means studied for. These are research compounds. We describe what has been reported in research settings and what our researchers typically notice — never a promise.
Baseline labs first, always. Each page lists the markers we ask for before a cycle and the ones we repeat during it. Kidney function is always cystatin C, never creatinine alone.
Your physician has the final word. Read the page, take it to your doctor, then decide.

DisclaimerResearch and educational information for adults. Not medical advice. Nothing in this library diagnoses, treats, cures or prevents any condition. Get baseline blood work before anything, and review any protocol with your own physician.

Your own protocol

Want this written for your body, not the average one?

The personal research protocol (€399, follow-up included) takes your intake, puts it through human review, and returns a short results version plus the full clinical document — then a free coach call on WhatsApp to walk it through and read your labs against the plan.

Build my protocol Book a 15-minute call

Research library — peptide protocols, explained