MK-677 (Ibutamoren) Reconstitution Calculator
Enter the amount you want to measure. The vial buttons will highlight which vial strengths create cleaner syringe-unit measurements.
What amount do you need?
Type the target amount, then choose mg or mcg. Example: 2mg or 500mcg.
Work the dose out from body weight
Syringe size:
Possible vial strengths:
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Example MK-677 (Ibutamoren) Titration Schedule
| Item | Details |
|---|---|
| Dose | 10–25 mg ORAL once daily |
| Timing | Evening preferred |
| Half-life | ~24 h pharmacodynamic |
| Titration | None — fixed dose from day 1 |
MK-677 is an oral small molecule (ibutamoren) — the injectable microgram table is doubly wrong: wrong route and ~50× below the studied dose. Trials used a fixed 25 mg/day; expect weight gain, not loss (appetite increases; +2.7 kg over 2 years in the longest study).
Possible vial strengths:
What Is It?
MK-677 (Ibutamoren)
Orally active ghrelin receptor agonist.
Bacteriostatic Water
Sterile water containing a bacteriostatic preservative, commonly used when preparing multi-use research vials.
How To Mix MK-677 (Ibutamoren)
1
CleanUse alcohol swabs to clean the tops of both vials.
2
Draw BAC WaterDraw the selected amount of bacteriostatic water.
3
Inject SlowlyAdd the liquid slowly down the side of the vial.
4
Swirl GentlyDo not shake. Swirl gently until dissolved.
5
Store ProperlyStore as directed and protect from heat and light.
Best Practices & Common Mistakes
Best Practices
- Use sterile technique.
- Protect from light and heat.
- Store refrigerated when appropriate.
- Use clean syringe-unit math before measuring.
Common Mistakes
- Confusing milligrams with milliliters.
- Choosing an option with awkward decimal units.
- Using too little liquid for very small measurements.
- Shaking the vial aggressively.
MK-677 (Ibutamoren) Storage & Handling
Lyophilized Powder: −20°C (−4°F) for long-term storage (up to 24 months). Refrigeration 2–8°C (36–46°F) for short-term use (up to ~3 months). Original sealed vial in the freezer is safest.
Reconstituted Solution: 2–8°C (36–46°F), use within ~7–14 days. Keep sealed, avoid light, and do not repeat freeze-thaw cycles.
Reconstituted Solution: 2–8°C (36–46°F), use within ~7–14 days. Keep sealed, avoid light, and do not repeat freeze-thaw cycles.
Frequently Asked Questions
MK-677 (ibutamoren) is an orally active, non-peptide small molecule that mimics ghrelin and activates the GHS-R1a receptor, prompting your pituitary to release more growth hormone and raise IGF-1. It is none of the things it's usually sold as: not a SARM (it has zero androgenic activity and doesn't touch testosterone), not an anabolic steroid, and not technically a peptide — it simply works on the same growth-hormone pathway as the injectable peptides. It's an investigational research compound, not an approved medicine.
You don't reconstitute MK-677 — it isn't an injectable peptide, so there's no powder-plus-bacteriostatic-water step and no syringe. It's taken by mouth as a capsule, tablet, or a pre-made oral liquid (the "MK-677 liquid" you'll see is already mixed and dosed in mL by mouth, not something you inject). If you're looking for an injectable growth-hormone secretagogue to reconstitute, that would be a peptide like ipamorelin or a GHRP — see those calculators instead.
In research, MK-677 was studied at oral doses in the milligram range (around 25 mg once daily in the main human trials), taken once a day thanks to its long-lasting IGF-1 effect. Many people take it at night, partly to line up with the natural overnight GH pulse and partly because the ghrelin-like appetite spike is easier to sleep through than to fight during the day. These are reference figures from studies, not an approved regimen, and whether it's appropriate is a clinical question.
The key difference is duration: where injectable GHRPs like ipamorelin act for a couple of hours and produce sharp GH pulses, MK-677's effect on IGF-1 lasts roughly 24 hours, giving a steadier, more continuous elevation from one daily pill. That continuous signal is convenient, but it also means less of the natural pulsing pattern and a stronger, ongoing appetite drive — which is why it tends to add weight rather than burn fat. And like all growth-hormone-axis compounds, it can only affect height in people whose growth plates are still open.
Despite its online reputation as a side-effect-free oral alternative to growth hormone, the trial record is more sobering: a hip-fracture study in frail elderly patients was stopped early after a congestive heart failure signal (about 6.5% versus 1.7% on placebo), and MK-677 consistently raises blood sugar and can drive insulin resistance, so glucose monitoring matters. It's not notably liver-toxic on its own — that fear mostly comes from it being sold next to liver-stressing SARMs — but the real concerns are cardiac and metabolic. It is not FDA-approved for any use, is sold only as a "research chemical," and is banned by WADA. Store capsules or oral liquid per the product label, usually cool and out of light; there's no reconstitution involved.
Practical takeaway: If your goal involves weight management, metabolic health, recovery, physical performance, cognitive function, appearance, or general well-being, discuss it with a licensed healthcare professional. They can help you evaluate approved, evidence-based options rather than relying on an unapproved or investigational compound. This calculator is intended only for transparent research-reference calculations and does not determine an appropriate amount, recommend use, or replace professional medical guidance.
References
Important: This tool is for informational and research-reference purposes only. Not intended for human or veterinary use.