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Vial size, bacteriostatic water and dose in — the syringe reading comes out. Defaults are the Retatrutide numbers from the Dosify Me app; change anything.
Quick answer: A 5 mg vial of Retatrutide mixed with 0.25 mL of bacteriostatic water comes to 20 mg/mL, so a 2 mg dose is 10 units (0.1 mL) on an insulin syringe.
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Informational use only — not medical advice. Check every reading against your own product's instructions.
10mg vial + 0.5mL BAC water = 10 units = 2mg — Frequency: weekly — Best taken: same day each week, any time
Full Retatrutide dosing reference — reconstitution per vial size, dose-to-units table, side effects and sources.
Like other GLP-1-class drugs, retatrutide's triple-receptor action slows digestion, which can change absorption of other oral medications, including thyroid medication (levothyroxine) — dose and timing may need adjustment. Combined with insulin or a sulfonylurea, the added blood-sugar-lowering effect can cause hypoglycemia — those doses often need to be reduced first. Talk to your prescribing doctor before combining.
Listed titration schedule: weeks 1-4 2mg, weeks 5-8 4mg, weeks 9-12 6mg, weeks 13+ 8mg (standard protocol). Advanced/aggressive protocols escalate to 12mg by week 13+; these are listed schedules, not recommendations. Vial sizes up to 60mg reconstitute to 20mg/mL — 5 units always = 1mg (e.g. 60mg + 3mL BAC water, or 30mg + 1.5mL). The 100mg and 120mg options are capped at 3mL BAC water instead of diluted further, so they come out more concentrated (fewer units per dose) than smaller sizes.
Standard water for each Retatrutide vial size in the Dosify Me data, and the concentration it gives. One unit is 0.01 mL on a U-100 insulin syringe.
| Vial | Vial contents | Bacteriostatic water | Concentration | Amount in one unit |
|---|---|---|---|---|
| 5 mg | 5000 mcg | 0.25 mL | 20 mg/mL | 200 mcg |
| 10 mg | 10000 mcg | 0.50 mL | 20 mg/mL | 200 mcg |
| 15 mg | 15000 mcg | 0.75 mL | 20 mg/mL | 200 mcg |
| 20 mg | 20000 mcg | 1.00 mL | 20 mg/mL | 200 mcg |
| 30 mg | 30000 mcg | 1.50 mL | 20 mg/mL | 200 mcg |
| 40 mg | 40000 mcg | 2.00 mL | 20 mg/mL | 200 mcg |
| 50 mg | 50000 mcg | 2.50 mL | 20 mg/mL | 200 mcg |
| 60 mg | 60000 mcg | 3.00 mL | 20 mg/mL | 200 mcg |
| 100 mg* | 100000 mcg | 3.00 mL | 33.33 mg/mL | 333.33 mcg |
| 120 mg* | 120000 mcg | 3.00 mL | 40 mg/mL | 400 mcg |
* This size is conventionally mixed more concentrated rather than diluted further — fewer units per dose than smaller vials of this peptide.
| Quantity | 5 mg | 10 mg | 15 mg | 20 mg |
|---|---|---|---|---|
| 2 mg | 10 units | 10 units | 10 units | 10 units |
| 4 mg | 20 units | 20 units | 20 units | 20 units |
| 6 mg | 30 units | 30 units | 30 units | 30 units |
| 8 mg | 40 units | 40 units | 40 units | 40 units |
Label numbers from the Dosify Me data, used to show the arithmetic. Not a recommendation of any quantity.
At 20 mg/mL (the standard mix for vials up to 60 mg), 2 mg of Retatrutide is 10.0 units on a 100-unit insulin syringe (0.100 mL).
At 20 mg/mL (the standard mix for vials up to 60 mg), 4 mg of Retatrutide is 20.0 units on a 100-unit insulin syringe (0.200 mL).
At 20 mg/mL (the standard mix for vials up to 60 mg), 6 mg of Retatrutide is 30.0 units on a 100-unit insulin syringe (0.300 mL).
0.25 mL, which gives 20 mg/mL. Larger vials hold at most 3 mL of water, so they are mixed more concentrated and need fewer units per dose.
0.50 mL, which gives 20 mg/mL. Larger vials hold at most 3 mL of water, so they are mixed more concentrated and need fewer units per dose.
0.75 mL, which gives 20 mg/mL. Larger vials hold at most 3 mL of water, so they are mixed more concentrated and need fewer units per dose.
Weekly. Same day each week, any time of day Typical cycle: Often run continuously; tapering is done under guidance.
Yes. “reta” is the short name people use for Retatrutide in forums and search, and every figure on this page is for that same compound. The units, water and schedule above do not change with the spelling.
Published by San Tan Group, LLC, the company that makes the Dosify Me app. About Dosify Me
Figures come from the Dosify Me compound database for Retatrutide: concentration is the vial amount ÷ the water volume, and syringe units are the volume in mL × 100 on a U-100 syringe.
Last checked: (changes only when the Retatrutide data changes)
Dosify Me does this math for you. Pick the compound, your vial size and dose, and the app draws the exact syringe reading, keeps your schedule and reminders, and logs every dose — privately, on your phone.
General peptide calculator · BAC water calculator · Peptide dosing chart · How to reconstitute peptides · mcg to units chart
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