Retatrutide: What It Is, FDA Status & Reconstitution Math
By James Li, Lead Editor · Updated · Reviewed
Quick answer
Retatrutide, sometimes called reta, is an investigational peptide that is not FDA-approved, though if a container in front of you lists milligrams the calculator can still divide those milligrams by the water you added.
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 Retatrutide uses only the numbers you type.
What is Retatrutide?
Retatrutide is an investigational peptide drug that is not FDA-approved, and reta is a nickname for the same compound.
It has been studied as a peptide that acts on three hormone receptors, and until a label exists for an approved product the only numbers the calculator can use are the ones printed on the container in front of you.
What is the FDA status of Retatrutide?
No, retatrutide is investigational and 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 Retatrutide reconstituted?
Reconstitution means a measured volume of liquid, usually bacteriostatic water, was added to a dry vial of Retatrutide.
Concentration is the milligrams in the vial divided by the milliliters you added, doubling the water cuts the amount in each unit in half, and the calculator uses the volume you report rather than picking one for you.
How do you convert Retatrutide mg to mcg and syringe units?
For Retatrutide, 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 Retatrutide be stored?
Storage for Retatrutide 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 Retatrutide?
For the approval status of Retatrutide, 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 |
|---|---|---|---|---|
| 30 | 3 | 10 | 10,000 | 1,000 |
| 5 | 1 | 5 | 5,000 | 500 |
| 10 | 2 | 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
Where can i get Retatrutide?
Retatrutide is covered here as labeled vial math, while availability and where to obtain it sit outside this calculator.
When will Retatrutide be available?
Retatrutide is covered here as labeled vial math, while availability and where to obtain it sit outside this calculator.
Is reta a peptide?
Retatrutide is a peptide drug candidate, and reta is only a nickname for that same substance, which is not FDA-approved.
How to take Retatrutide?
How and when to take a medicine is between you and your clinician, and here you can convert a labeled strength and a water volume into syringe units.
Is Retatrutide FDA approved?
No, retatrutide is investigational and is not FDA-approved.
Sources
- Drugs@FDA, FDA
Related
Topics
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