Metabolic & Weight
Semaglutide Dosing & Reconstitution Calculator
GLP-1 receptor agonist for blood sugar control and significant weight reduction.
TL;DR - Semaglutide is a metabolic & weight peptide with a typical starting dose of 1 mg. For a 5 mg vial, add 1 mL bacteriostatic water to yield 5 mg/mL.
1 mg
Start Dose
5 mg
Vial
1 mL
BAC Water
5
mg/mL
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Frequently Asked
How do I reconstitute Semaglutide?
Add 1 mL of bacteriostatic water to a 5 mg vial, injecting slowly down the inside wall. Swirl gently; never shake. This yields a concentration of 5 mg/mL.
What is the recommended dose of Semaglutide?
A typical research dose is 1 mg. Consult the ASCEND calculator for your specific vial concentration and draw volume.
How many doses are in a Semaglutide vial?
A 5 mg vial reconstituted with 1 mL BAC water yields approximately 5 doses at 1 mg each.
How many IU is 1 mg of Semaglutide on a syringe?
With a 5 mg vial reconstituted in 1 mL bacteriostatic water, the concentration is 5 mg/mL. For a 1 mg dose: Volume = 1 mg ÷ 5 mg/mL = 0.2 mL. Draw to the 20 line on a 100-unit insulin syringe. You can adjust these values in the ASCEND calculator for any vial size.
What does a Semaglutide dosage calculator do?
A Semaglutide dosage calculator converts your vial size and BAC water volume into an exact syringe draw in IU. Enter your vial strength (5 mg), reconstitution volume (1 mL), and target dose to get the precise line to draw on an insulin syringe.
What is the Semaglutide reconstitution calculator formula?
Draw volume (mL) = Dose (mg) divided by Concentration (mg/mL). For a 5 mg vial with 1 mL BAC water: concentration = 5 mg/mL. For a 1 mg dose, the ASCEND calculator gives the exact IU line on your syringe instantly.
Peptide Intelligence
What is the half-life of Semaglutide?
Semaglutide has a half-life of approximately 7 days, achieved via albumin-binding fatty acid modification. This allows once-weekly subcutaneous administration with stable steady-state plasma concentrations.
Should Semaglutide be injected subcutaneously or intramuscularly?
Semaglutide is administered subcutaneously only. Preferred sites include the abdomen, outer thigh, and upper arm. Intramuscular injection is not recommended and may alter absorption kinetics.
What is the typical onset time for Semaglutide weight loss effects?
Appetite suppression typically begins within the first week at starting doses. Clinically meaningful weight loss (5%+ body weight) is generally observed by weeks 12–16. Full efficacy develops over 52+ weeks as doses titrate upward.
Also Explore
Research Guides
Bacteriostatic Water Guide
What it is & why it matters for reconstitution
How Much BAC Water for Semaglutide?
5 mg vial reconstitution recipe + concentration table
Semaglutide on Insulin Syringe
1 mg draw on 30u / 50u / 100u syringes
GLP-1 Brand Reference for Semaglutide
Wegovy / Ozempic titration + compound dose math
Semaglutide + Cagrilintide Stack
GLP-1 agonist + amylin analog (CagriSema)
Insulin Syringe Guide
Choosing the right gauge & volume for your draw
Multi-Lab Verification Standard
How ASCEND ensures dosing accuracy
Primary Sources
STEP 1 (NEJM 2021)
SUSTAIN-6 Cardiovascular
ClinicalTrials NCT04788615
Data last reviewed 2026-06-03 · Methodology →
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