Spartan Peptides LLC
All dosage protocols

Melanotan II dosage chart

10 mg Vial

Melanotan II is dosed at 250 mcg–1 mg daily via subcutaneous injection in educational protocols. A 10 mg vial reconstituted with bacteriostatic water yields about 3.33 mg/mL. This information is for research and educational use only.

Reconstitute
Add 3.0 mL bacteriostatic water → 3.33 mg/mL concentration.
Typical daily range
250–1000 mcg once daily (gradual titration over 8–12 weeks).
Easy measuring
At 3.33 mg/mL, 1 unit = 0.01 mL ≈ 33.3 mcg on a U-100 insulin syringe.
Storage
Lyophilized: freeze at −20 °C (−4 °F) or below; after reconstitution, refrigerate at 2–8 °C (35.6–46.4 °F); use within 1–2 weeks.

Dosing schedule

Week / PhaseDaily DoseUnits (per injection) (mL)
Week 1250 mcg (0.25 mg)7.5 units (0.075 mL)
Week 2500 mcg (0.5 mg)15 units (0.15 mL)
Week 3750 mcg (0.75 mg)22.5 units (0.225 mL)
Weeks 4–81000 mcg (1 mg)30 units (0.30 mL)
Maintenance(after Week 8)500–1000 mcg(1–2× weekly)15–30 units(0.15–0.30 mL)

Reconstitution steps

  1. 1Draw 3.0 mL bacteriostatic water with a sterile syringe.
  2. 2Inject slowly down the vial wall to avoid foaming; do not shake vigorously.
  3. 3Gently roll or swirl the vial until the powder is fully dissolved.
  4. 4Label the vial with the reconstitution date and store refrigerated at 2–8 °C (35.6–46.4 °F), protected from light.

Important Notes

Practical considerations for consistency and safety.

  • Use new sterile insulin syringes for each injection; dispose in a sharps container immediately.
  • Rotate injection sites systematically (abdomen, thighs, upper arms) to reduce local irritation and scarring.
  • Clean vial stopper and injection site with alcohol swabs before each use; allow to air dry.
  • Inject slowly and steadily; wait a few seconds before withdrawing the needle.
  • Document daily dose, injection site, and any side effects to maintain consistency and track tolerance.
  • Safety warning: Do not exceed 2 mg per day; case reports document serious systemic toxicity and rhabdomyolysis at mega-doses (6 mg).

How This Works

Melanotan II is a synthetic cyclic heptapeptide analog of α-melanocyte-stimulating hormone that binds to melanocortin receptors, particularly MC1R and MC4R. Activation of MC1R on melanocytes stimulates melanin production and distribution, resulting in increased skin pigmentation even without UV exposure. Early Phase I studies in humans identified 0.025 mg/kg per day (approximately 1.5–2 mg for an average adult) as an appropriate dose, with measurable tanning observed after just five low doses administered over two weeks. The peptide’s subcutaneous administration allows for steady melanocortin receptor activation, with effects accumulating over the course of daily injections during the initial tanning phase.

Potential Benefits & Side Effects

Observations from clinical trials and case reports.

  • Increases skin pigmentation (tanning) without UV exposure requirement.
  • Tanning effects observable after 5–10 daily injections in most individuals.
  • May induce spontaneous erections in men as a noted side effect (MC4R activation).
  • Maintenance dosing (1–2× weekly) can sustain pigmentation after initial loading phase.
  • Nausea (dose-dependent; most common at higher doses).
  • Facial flushing and increased skin warmth.
  • Reduced appetite and mild fatigue.
  • Spontaneous erections or increased libido in men.
  • Injection site reactions (redness, mild stinging).
  • Not FDA-approved: Melanotan II is not an approved medication; use carries regulatory and safety risks.
  • Dose-limiting toxicity: Severe sympathomimetic symptoms and rhabdomyolysis reported at 6 mg dose.
  • Mole changes: May alter pigmentation of existing moles; theoretical melanoma concerns warrant caution.
  • Cardiovascular effects: Transient increases in heart rate and blood pressure possible at higher doses.

Lifestyle Factors

Complementary strategies for safe and effective outcomes.

  • UV exposure: Melanotan II increases melanin without UV, but some users combine with minimal UV exposure; always use appropriate sun protection to reduce skin cancer risk.
  • Hydration: Maintain adequate fluid intake, especially if experiencing nausea or appetite suppression.
  • Monitoring: Inspect moles and skin regularly for changes; seek dermatological evaluation if new or changing lesions appear.
  • Dose discipline: Adhere strictly to conservative dosing protocols; never exceed 2 mg per day to avoid serious adverse effects.

Injection Technique

Subcutaneous injection guidance from clinical best-practice resources.

  • Clean the vial stopper and injection site with alcohol swabs; allow both to air dry completely.
  • Use a 1 mL insulin syringe (29–31 gauge, ½ inch needle) for subcutaneous administration.
  • Pinch a fold of skin approximately 1 inch thick at the injection site (abdomen preferred, at least 2 inches from navel).
  • Insert the needle at 45–90° depending on body composition; release the pinch after needle insertion.
  • Do not aspirate for subcutaneous injections; inject slowly and steadily.
  • Withdraw the needle at the same angle; apply gentle pressure with clean gauze if needed.
  • Rotate sites systematically to avoid lipohypertrophy or scarring.
  • Dispose of used syringes immediately in a proper sharps container; never reuse needles.

important-note

This content is intended for therapeutic educational purposes only and does not constitute medical advice, diagnosis, or treatment. Melanotan II is not an approved medication by the FDA or other regulatory agencies. Research use only; not for human consumption. Any use carries significant risks including potential serious adverse effects. Consult qualified healthcare professionals before considering any peptide research.

Melanotan II dosage FAQs

How much bacteriostatic water do you use to reconstitute Melanotan II?

Add 3.0 mL bacteriostatic water → 3.33 mg/mL concentration. for a 10 mg Vial vial. Add the water slowly against the inside wall of the vial and swirl — never shake — until the powder fully dissolves.

What does the Melanotan II dosing schedule look like?

Week 1 — 250 mcg (0.25 mg) — 7.5 units (0.075 mL); Week 2 — 500 mcg (0.5 mg) — 15 units (0.15 mL); Week 3 — 750 mcg (0.75 mg) — 22.5 units (0.225 mL); Weeks 4–8 — 1000 mcg (1 mg) — 30 units (0.30 mL). The full table above lists every step with matching syringe units.

What are the mixing steps for Melanotan II?

Draw 3.0 mL bacteriostatic water with a sterile syringe. Inject slowly down the vial wall to avoid foaming; do not shake vigorously. Gently roll or swirl the vial until the powder is fully dissolved.

How should reconstituted Melanotan II be stored?

Storage: Lyophilized: freeze at −20 °C (−4 °F) or below; after reconstitution, refrigerate at 2–8 °C (35.6–46.4 °F); use within 1–2 weeks..

How many insulin syringe units equal a Melanotan II dose?

Units depend on the water volume you used. Divide your target dose by the vial concentration to get millilitres, then multiply by 100 — 1 unit on a U-100 insulin syringe is 0.01 mL. The Spartan Peptides reconstitution calculator does this conversion for you.

Is Melanotan II approved for human use?

No. Melanotan II is sold and referenced strictly as a research chemical. Nothing on this page is medical advice and the material is not for human consumption.

Educational and research information only. Not medical advice, not for human consumption. Values are reference figures — always verify your own math with the reconstitution calculator.

On any insulin syringe, 1 unit = 0.01 mL, so unit counts above hold across brands.