Early access · invite only

The protocol command center for serious peptide users.

Reconstitution math, dose logging, vial inventory, and injection-site intelligence — designed for adults who already know what they're doing and just want the spreadsheet to stop being a spreadsheet.

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GLP-1 · Healing · Growth hormone · Cognitive · Aesthetic · Longevity · Metabolic · Immune

Peptides in library
83
Each linked to its primary citation.
Reconstitution math
Built-in
BAC volume, units to draw, mg/mL.
Citation policy
Every claim
If we can't cite it, we don't publish it.

What is Agonist?

A tracking tool for the people who actually pin — not a wellness dashboard with peptide skins.

Agonist is a tracking app for adults running their own injectable protocols — peptides, GLP-1s, growth-hormone secretagogues. It handles reconstitution math, dose logging, vial inventory, injection-site rotation, and the daily “what do I pin and where” question. It is software. It is not medical advice.

Other apps in this category either pretend to be your doctor or wrap a calorie tracker around a couple of GLP-1 reminders. We built Agonist for the people who already have a protocol, already have a vial, and already know what they're doing — they just don't want to re-derive the math at 6 a.m. or guess which abdomen quadrant they used last week. Every claim in our library links to the paper behind it. We don't make assertions our citations can't back.

The calculator and 80-peptide library are free forever, no signup needed. Pro ($12/month or $89/year) adds vials, dose logging, protocol scheduling, symptom tracking, photos, labs, and the clinician PDF export. Coach ($39/month) adds AI pattern recognition across your protocol history. 7-day free trial. Card required at signup. Cancel anytime.

What you get

Six working surfaces. Built for the morning ritual.

Today

The morning, distilled to one screen.

See the dashboard

Next dose, active vials, last site, adherence — your peptide protocol in the four lines that matter before coffee.

Next dose

Tirzepatide

5.0 mg · 7:42 AM

Active vials

Ipamorelin · 22d to expiration

Last site

Right thigh

1d ago · 14 remaining quadrants in rotation

Adherence

92%

13 of 14 doses logged

Vials

The shelf, always counted.

Open the calculator

Reconstitute once. The app counts down doses and days-to-expiration after every log.

BPC-157

5 mg / 2 mL

18doses left

22d to expiration

Ipamorelin

5 mg / 2.5 mL

22doses left

11d to expiration

CJC-1295 (no DAC)

5 mg / 2 mL

30doses left

20d to expiration

Sites

Rotation, enforced.

How it works

Every site you've used, remembered. Cooldown zones go muted; the open quadrant lights up.

Anatomical line drawing of a clothed midsection used as a reference for abdominal injection-site rotation.

Today

Today
Upper-left abdomen
Cooldown
Used 1d · 2d ago
Open
Lower-left, no recent use

Protocol

Seven days, at a glance.

See the schedule logic

Filled = logged. Hollow = scheduled. The week reads like a heart-rate strip — every gap visible.

Week of May 6 — May 12

13 / 14 doses on schedule

LoggedScheduledMissed

Library

Honest about what we don't know.

Browse the library

Every peptide carries a tier — human clinical, animal + mechanistic, or mechanistic only. The library says it plainly.

PeptideEvidence tierPubMed

TirzepatideHuman clinical47
BPC-157Animal + mechanistic12
MOTS-cMechanistic only6

Tier badge appears next to every peptide name across the app — library, dashboard, calculator. Click any peptide to see the underlying papers.

Progress

The trend, on paper.

How charts work

Plot weight, A1c, IGF-1, or any biomarker against the protocols you actually ran. Charts that argue with anecdote.

Bodyweight · 90 Days

−14.2 lb

Avg loss / week

1.1 lb

Highest dose

Tirzepatide 12 mg

The math

Reconstitution math without the spreadsheet.

Enter vial, BAC, dose. Returns units to draw, mg/mL concentration, and the exact mark on the syringe barrel.

Inputs

Peptide in vial: 5mg
BAC water added: 2mL
Target dose: 250mcg

Draw

10units

2.5 mg/mL concentration · suggest 0.3 mL insulin syringe

Evidence

Citation-backed. Honest about what we don't know.

Every claim anchored to a paper. Every paper tiered by evidence strength.

Library entry · how it appears

BPC-157

Animal + mechanistic

Pentadecapeptide · 15 amino acids · half-life ≈ 30 min

Seiwerth et al. · Curr Pharm Des · 2018
PMID 29714137
BPC 157 accelerated tendon-to-bone healing in a rat Achilles model.
Sikiric et al. · J Physiol Pharmacol · 2020
PMID 33500376
Stable gastric pentadecapeptide BPC 157 in the therapy of the rats with bile duct ligation.
Chang et al. · Biochim Biophys Acta · 2014
PMID 24239961
BPC 157 modulated growth-hormone receptor expression in tendon fibroblasts.

Not established for human clinical use. All cited evidence is animal or mechanistic. Use is research / off-label and should be discussed with a qualified clinician.

Study · how it appears

Seiwerth et al., 2018

Study type: Animal — rat Achilles tendon
Sample: n = 80
Dose route: Intraperitoneal
Dose range: 10 ng – 10 µg / kg
Duration: 14 days
Outcome: Accelerated healing

Finding

BPC 157 accelerated tendon-to-bone healing at all tested doses with no observed dose-dependent toxicity. Mechanism implicated growth-hormone-receptor upregulation in tendon fibroblasts.

Every claim in the library links to a record like this. Click the PMID to read the source paper, not our summary of it.

Early access

The morning ritual deserves better tools.

Early access cohorts open summer 2026. Get on the list — Pro calculator features unlock in the meantime.

Get early access See the library →