GLP1 is the research code name for semaglutide, sold as Ozempic and Wegovy. This page covers that one compound only, so the reported figures cannot be confused with the dual or triple agonists. Every published programme uses a stepped escalation design rather than a fixed quantity.
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Every figure on this page is a range reported in published literature or in a publicly documented study protocol. It is a record of what researchers used, not a recommendation, a therapeutic protocol, or advice. Peptide Intel Hub is an independent publication, sells nothing, and describes these compounds as in-vitro research reagents only.
Compound at a glance
Class
GLP-1 receptor agonist
Reported half-life
Approximately 7 days
Routes used in the literature
Subcutaneous in every published trial programme
Also written as
Semaglutide, sold as Ozempic and Wegovy — single GLP-1 receptor agonist
What the published studies reported
Each row below describes one body of work. The model and population are part of the figure — a rodent per-kilogram quantity and a human trial quantity are not comparable.
GLP1 (semaglutide / Ozempic) — published trial escalation
Reported quantity
0.25 mg escalating in steps toward 2.4 mg weekly at the top of the studied range
Frequency
Once weekly
Study duration
4-week steps; 68-week primary endpoints in the large trials
Escalation exists in the protocols to manage gastrointestinal tolerability, not to increase effect faster.
Dosage chart
These figures match the published chart for this compound on peptidedosages.com, including the reconstitution volume, resulting concentration, insulin-syringe units and the staged schedule. Educational reference only — not instructions, and not medical advice.
Semaglutide · 10 mg Vial
Semaglutide Dosage calculations for a 10 mg vial use the same once-weekly escalation amounts evaluated in human research and listed in the current injectable product information. Adding 3 mL in this lyophilized-vial calculation produces 3.33 mg/mL, so each U-100 unit contains 33.33 mcg.
Reconstitute
Add 3 mL of the documented sterile diluent to produce 3.33 mg/mL.
Research frequency
Once weekly by subcutaneous administration in the cited human trials.
Weekly research range
The standard schedule shown below progresses from 0.25 mg to 2.4 mg weekly in four-week stages.
Easy measuring
1 U-100 unit = 0.01 mL = 33.33 mcg.
Vial size
The 10 mg label is total nominal vial content, not a weekly amount.
Vial coverage
At the 0.25 mg starting stage, one vial supplies 40 full weekly amounts. At the 2.4 mg maintenance stage, one vial supplies 4 full weekly amounts with 0.4 mg remaining. These are mass calculations, not vial storage or discard periods.
Standard Weekly Escalation Schedule (3 mL = 3.33 mg/mL)
The same arithmetic for every vial size GLP1 (semaglutide / Ozempic) is supplied in, using a fixed 3 ml of bacteriostatic water. One unit on a U-100 insulin syringe is 0.01 ml, so the unit column below is simply the volume that carries the reported amount. Educational arithmetic only — not instructions, and not medical advice.
GLP1 (semaglutide / Ozempic) · 3 ml bacteriostatic water
Vial size
Concentration
Per 1 unit
5 mg
1.67 mg/ml
17 mcg
10 mg
3.33 mg/ml
33 mcg
15 mg
5.00 mg/ml
50 mcg
20 mg
6.67 mg/ml
67 mcg
30 mg
10.00 mg/ml
100 mcg
No single reported amount applies to this compound, so only the concentration and the value of one unit are shown. Only the vial sizes this compound is actually supplied in are shown, and every figure assumes exactly 3 ml of bacteriostatic water. For any other volume, use the reconstitution calculator.
Reconstitution maths
Research vials are typically 5 mg, 10 mg or 15 mg lyophilised. A 10 mg vial in 3 mL of bacteriostatic water gives 3.33 mg/mL, so one U-100 unit carries 33.33 mcg — use the calculator rather than estimating.
These are in-vitro research reagents. The trial figures describe supervised clinical programmes with monitoring and titration, and are reported here as literature only.
Gastrointestinal tolerability is the reason every published protocol escalates slowly.
Research-grade material is not the same molecule quality as trial material; peptide content per vial routinely differs from the labelled mass.
GLP2 (tirzepatide) and GLP3 (retatrutide) are different molecules with different figures — each has its own page, and the numbers are not interchangeable.
Sources and citations
These are the published records the figures on this page are drawn from. Each one describes what researchers administered, in which model or population, and over what period. Quantities reported in a study are specific to that study's design and are not transferable guidance.
[1]
Once-Weekly Semaglutide in Adults with Overweight or Obesity
Wilding JPH, Batterham RL, Calanna S, et al. · New England Journal of Medicine · 2021 · PMID 33567185
1961 adults with overweight/obesity were randomized to once-weekly subcutaneous semaglutide 2.4 mg or placebo for 68 weeks as an adjunct to lifestyle intervention (STEP 1 trial).
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Peptide Intel Hub is an independent educational publication. We are not affiliated with, owned by, or the same company as Regena Peptides and Regena.app (regena-peptides.com / regena.app). We do not sell, supply, ship or take payment for any compound. Because readers regularly ask where compounds discussed in published studies can be sourced for laboratory work, we list Regena Peptides and Regena.app as suppliers we have verified and trust — every batch is released with a lot-matched third-party certificate of analysis (HPLC purity and mass-spectrometry identity). Outbound links are marked nofollow/sponsored and are provided to help readers, not to sell.