Understanding Melanotan II Dosing

Melanotan II dosing follows a two-phase approach: a loading phase to build up melanin production, followed by a maintenance phase to sustain results. This approach reflects how melanogenesis works biologically. Melanocytes need repeated stimulation to ramp up melanin production, but once that production is established, less frequent dosing maintains it .

Individual dosing varies significantly based on skin type, body weight, and sensitivity to the peptide. What works for a 130-pound fair-skinned individual will differ from what a 200-pound person with olive skin needs. This is why physician-guided dosing is important.

Dosing by Fitzpatrick Skin Type

Fair-skinned individuals (Types I and II) generally require higher cumulative loading doses because their melanocytes have less baseline activity. Darker skin types respond more quickly because their melanocytes are already more active .

Loading Phase Protocol

The loading phase is designed to stimulate melanocyte activity and build up melanin production. During this phase, you inject daily.

Recommended Approach

1. Day 1-3: Start at 100 mcg to assess tolerance. Inject before bed to minimize awareness of side effects.
2. Day 4-7: If well tolerated, increase to 250 mcg per day.
3. Week 2-4: Continue at 250-500 mcg per day until desired pigmentation is reached.

Most users achieve noticeable skin darkening within 7 to 14 days. Fair-skinned individuals may need the full 3 to 4 weeks. The loading phase should not exceed 4 weeks without physician reassessment.

Low-Dose Loading Alternative

For patients who are particularly sensitive to nausea or other side effects, a low-dose loading protocol of 100 mcg per day for 3 to 4 weeks can be effective. Results take longer to appear, but side effects are significantly reduced. This approach is especially useful for first-time users .

Maintenance Phase Protocol

Once you achieve the desired level of pigmentation, you transition to maintenance dosing. The goal is to sustain melanin production with the minimum effective dose.

Typical Maintenance Schedule

• Fair skin (Types I-II): 250-500 mcg once or twice per week
• Medium skin (Type III): 100-250 mcg once or twice per week
• Olive skin (Type IV): 100-250 mcg once per week

Some patients find they can reduce maintenance dosing further over time. Others lose pigmentation quickly and need more frequent doses. Track your response and adjust with your physician's guidance.

UV Exposure and Dosing

Melanotan II works synergistically with UV exposure. Brief, controlled sun exposure or low-duration UV sessions during the loading phase can enhance pigmentation results. However, the goal of Melanotan II is to reduce UV dependence, not increase it. Extended UV exposure while using Melanotan II increases the risk of sunburn and long-term skin damage .

Dose Calculation

After reconstitution, your dose depends on the concentration of your solution. Here is a quick reference:

"Units" here refer to markings on a standard U-100 insulin syringe where 1 unit = 0.01 mL. We recommend reconstituting with 2 mL for easier dose measurement. See our Melanotan II how to inject guide for detailed preparation instructions.

Adjusting Your Dose

Signs you may need to adjust:

• Too much nausea: Reduce dose by 50% and titrate back up more slowly.
• Tanning too fast: Reduce dose or switch to every-other-day dosing during loading.
• No visible change after 2 weeks: Consider a modest dose increase (no more than 100 mcg at a time) after consulting your physician.
• Uneven pigmentation: This can occur naturally. UV exposure helps even out results. Do not increase the dose to address patchiness.
• Fading during maintenance: Increase maintenance frequency (twice per week instead of once) before increasing per-dose amount.

Frequently Asked Questions

What is the maximum safe dose of Melanotan II?

Clinical trials have used doses up to 1 mg per day, but side effects increase significantly above 500 mcg. Most practitioners recommend staying at or below 500 mcg per injection. Higher doses increase nausea, flushing, and other side effects without proportionally better results .

How long does a 10 mg vial last?

At a loading dose of 250 mcg per day, a 10 mg vial provides 40 days of loading. At a maintenance dose of 250 mcg twice weekly, the same vial lasts approximately 10 weeks.

Should I take Melanotan II every day?

Daily dosing is only recommended during the loading phase (2-4 weeks). Once you reach your desired pigmentation, switch to maintenance dosing of 1 to 2 times per week.

Does body weight affect Melanotan II dosing?

Body weight has some influence, but skin type is a more important variable. A 200-pound person with Type III skin may need less Melanotan II than a 130-pound person with Type I skin. Start at the same low dose regardless of weight and titrate based on response.

Can I take Melanotan II with GLP-1 medications?

There are no established pharmacological interactions between Melanotan II and GLP-1 receptor agonists like semaglutide. Both can cause nausea independently, so combining them may increase GI discomfort. Discuss any combination therapy with your physician.