MK-677: What It Is, FDA Status & Reconstitution Math
By James Li, Lead Editor · Updated · Reviewed
Quick answer
MK-677, also called ibutamoren, is a small molecule rather than a peptide or a SARM, and it is not FDA-approved, so capsules and oral liquids do not have a syringe mark.
A syringe calculation only applies when a container lists milligrams and you added a measured liquid. Once you have milligrams on the label and the milliliters of water you added, concentration is those milligrams divided by those milliliters, and a U-100 syringe reads that volume as 100 units per milliliter, so 10 units is 0.1 mL while one milligram is 1,000 micrograms.
Blends
Optional. Extra peptides are added to the vial total.
Waiting on Input
5 mg vial, 2 mL water, 250 mcg. Example only, not a dose.
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Illustrative arithmetic only, not a recommendation. The result for MK-677 uses only the numbers you type.
What is MK-677?
MK-677, or ibutamoren, is a small molecule, and it is neither a peptide nor a SARM.
Most products are capsules or oral liquids, so a syringe chart does not apply, and the calculator is only relevant when you are diluting a container that lists milligrams and a liquid volume.
What is the FDA status of MK-677?
No, MK-677 is not FDA-approved.
The calculator does not grant or remove an approval and only divides the milligrams you enter by the milliliters you enter, so check Drugs@FDA or DailyMed for the product name on your label.
How is MK-677 reconstituted?
Most MK-677 products are capsules or oral liquids, which are not mixed like a peptide vial.
If you do have a dry container and you added a measured liquid, concentration is milligrams divided by milliliters, and if you did not add liquid there is no syringe mark to calculate.
How do you convert MK-677 mg to mcg and syringe units?
For MK-677, multiply milligrams by 1,000 to get micrograms.
That conversion does not produce a syringe mark, because units measure volume and you still divide the micrograms you want to measure by the micrograms in each milliliter.
How should MK-677 be stored?
Storage for MK-677 is on its own label, covering temperature, light, and how long it may be kept after mixing.
An unopened bottle and a mixed vial are not the same case, so if the label is missing ask the pharmacist or clinician who supplied it rather than borrowing a rule from a different product.
Where can I find primary sources on MK-677?
For the approval status of MK-677, start with Drugs@FDA and the product label on DailyMed.
Those are the places that say whether a named product is approved and what its label claims, and this page does not recap studies or change the calculator because of them.
Unit math
Illustrative arithmetic only. Not a dose. Barrel columns use a U-100 scale, 100 units per mL.
| Vial mg | Water mL | mg/mL | mcg/mL | mcg in 10 units |
|---|---|---|---|---|
| 10 | 2 | 5 | 5,000 | 500 |
| 5 | 1 | 5 | 5,000 | 500 |
| mL | 1 mL barrel (U-100 scale) | 0.5 mL barrel (U-100 scale) | 0.3 mL barrel (U-100 scale) |
|---|---|---|---|
| 0.05 | 5 | 5 | 5 |
| 0.1 | 10 | 10 | 10 |
| 0.25 | 25 | 25 | 25 |
| 0.5 | 50 | 50 | 50 (past barrel) |
| 1 | 100 | 100 (past barrel) | 100 (past barrel) |
FAQ
What is MK-677?
MK-677, or ibutamoren, is a small molecule, and it is neither a peptide nor a SARM.
Is MK-677 a SARM?
No, MK-677 is not a SARM, because a SARM is a selective androgen receptor modulator and MK-677 is a separate small molecule also called ibutamoren.
Is MK-677 a peptide?
No, because a peptide is a short chain of amino acids and MK-677 is a small molecule rather than a peptide chain.
Is MK-677 FDA approved?
No, MK-677 is not FDA-approved.
Sources
- Drugs@FDA, FDA
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Topics
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