Protocol library
SingleApprovedRegulatory LabelHigh confidenceSourced

Bremelanotide

A melanocortin receptor agonist with an authorised US auto-injector for a defined indication. Research-vial calculations are not equivalent to the regulated product.

Evidence context, not a personal protocol

Quantities below reproduce their stated source context—label, human study, laboratory work or educational guide. They do not assess suitability, product equivalence or individual risk.

Community-reported schedule

Community-reported · not a validated schedule

Community dose schedule

Community-provenance subcutaneous PT-141 taken as needed, from about 300 mcg to 2 mg. Forum reports only, distinct from and not a substitute for the 1.75 mg authorised Vyleesi auto-injector.

Evidence source
Reported maximum quantityChoose the maximum quantity reported by this community line. Any earlier phase can be selected below for its arithmetic.

Reported per-use quantity

Select a point for its calculation examples
  1. Standard (as needed)
    1 mg
    Males commonly land near 1 mg and females often around 0.5-1 mg; effect can diminish with larger or more frequent doses.

Vial-aware arithmetic

Reconstitution examples, up to 3 mL

Choose the vial quantity and BAC water first. The diagram and results below update for the selected 1 mg reported quantity. Higher-strength vials may naturally land outside the 20-30 unit band.

Vial quantity

Choose the quantity printed on the vial.

BAC water added

Use 1, 2 or 3 mL, or enter a custom volume up to 3 mL.

Open the full reverse calculator
Three millilitre research vial, diluent vial and capped U-100 syringe on an ink-blue surface
One small vial, one measured diluent volume and one U-100 scale. The arithmetic connects all three.
BAC water selected
2 mL

Basic example limit: 3 mL maximum. Check the actual vial and product-specific limits.

1 mL BAC
10 units

resulting U-100 draw

Concentration
10 mg/mL
BAC added
1 mL
3 mL BAC
30 units

resulting U-100 draw

Concentration
3.333 mg/mL
BAC added
3 mL

Formula: draw units = selected mg × BAC mL ÷ vial mg × 100. The 20-30 unit band is a measurement reference, not a recommendation. Results are mathematical examples, not preparation instructions.

Dosage and protocol evidence

Each card states what the quantities are based on. A third-party or animal schedule is not a validated human dose.

Regulatory LabelSubcutaneous auto-injectorAs needed within label limits
Premenopausal women meeting the authorised Vyleesi indication

The label specifies a fixed 1.75 mg subcutaneous auto-injector used when needed, no more than once per 24 hours or eight times per month

This describes the regulated presentation only and requires the full label and clinical assessment. It is not a conversion rule for research vials.

View source
Community GuideSubcutaneous in reportsAs needed; no community consensus
online research community reports

The channel commonly reports 1-2 mg subcutaneously as needed, but perceived onset is often 2-8 hours rather than the pinned 30-minute timing

These reports are not interchangeable with the 1.75 mg authorised presentation. The archive also contains wider 0.5-3 mg anecdotes; raw/peptide-education/pe-bremelanotide-pt141.md:18-21, 100-105 and 377-382.

View source
Community GuideSubcutaneousAs needed, at least 72 hours apart
authenticated research-forum (Peppys) reports

Subcutaneous as-needed dosing that begins low (125-500 mcg, some microdosing about 300 mcg) and titrates, with males landing roughly 1-2.5 mg and females roughly 0.5-1.7 mg; members repeat that doses stay at least 72 hours apart and under about 8 mg per month, and note the effect can fade with larger or more frequent dosing

Forum provenance from an authenticated archive with usernames omitted. These figures are not interchangeable with the fixed 1.75 mg authorised auto-injector; reports conflict on the female dose (a clinician chart lists 2 mg where the community caps nearer 1 mg), and nausea, flushing and skin darkening drive the low-and-slow pattern.

View source

Evidence summary

The authorised product uses a fixed-dose device for a defined population. Its efficacy and safety evidence cannot validate a separately sourced research vial.

Safety context

The full label describes transient blood-pressure changes, focal hyperpigmentation, nausea and medicine interactions related to slowed gastric emptying.

Community provenance (Peppys)

An authenticated research-forum archive records subcutaneous PT-141 taken as needed, beginning low around 125-500 mcg and titrating, with male reports clustering near 1-2.5 mg and female reports nearer 0.5-1.7 mg. Members repeatedly cap frequency at roughly 8 mg per month with at least 72 hours between doses, and note the effect can diminish with larger or more frequent use. These forum quantities are not interchangeable with the fixed 1.75 mg authorised auto-injector, the reports conflict on the female dose against the clinician charts, and nausea, flushing and skin darkening are the commonly logged reasons for staying conservative. Usernames are omitted and the planner above reproduces the arithmetic of the reported quantities rather than validating them.

Warnings and contraindications

The label limits frequency and includes cardiovascular and pigmentation warnings.
Research-labelled PT-141 is not interchangeable with the authorised auto-injector.

Contraindications reported by the source

Uncontrolled hypertension
Known cardiovascular disease
Organised research bench with labelled storage tray, vial rack, notebook and thermometer
A clean workspace supports traceability. It does not establish sterility.

Shared across protocols

Supplies and general handling

Keep the universal checklist short. Product-specific labelling and source documentation always take priority over a general guide.

Research vial

Select the labelled vial quantity used in the calculation.

View Peppys vial

Bacteriostatic water

Use only a diluent appropriate to the research method and formulation.

View Peppys BAC water

U-100 measuring syringe

Use a new sterile device for every entry. Source locally.

Source locally

Wipes and sharps container

Plan clean handling and immediate sharps disposal. Source locally.

Source locally

Storage follows the label

Do not apply a universal refrigerator rule. Follow the product, diluent and study documentation for temperature, light and expiry.

Use sterile equipment once

CDC injection-safety guidance calls for a new sterile needle and syringe for each injection and entry into a medication container.

Stability is formulation-specific

Do not infer a post-mixing lifetime from BAC water alone. Discard material when identity, integrity or sterility is in doubt.