Medications

How to Reconstitute Compounded Semaglutide: A Complete Step-by-Step Guide

If you've received compounded semaglutide for the first time, you might be looking at two vials and wondering where to start. Don't worry—reconstituting your medication is simpler than it looks, and once you've done it a few times, it'll become second nature. This guide will walk you through the entire process so you can confidently prepare your doses at home.

What Does Reconstituting Semaglutide Mean?

Reconstitution is the process of mixing a powdered medication with a sterile liquid (called bacteriostatic water) to create an injectable solution. Compounded semaglutide typically arrives as a freeze-dried powder because this form remains stable during shipping and storage.

Once you mix the powder with the provided liquid, you'll have a solution that's ready to draw into a syringe and inject. The process takes just a few minutes and doesn't require any special medical training.

What You'll Need

Before you start, gather these supplies:

Make sure everything is at room temperature before you begin. If your medication was refrigerated, let it sit out for about 15-20 minutes.

Step-by-Step Reconstitution Instructions

Step 1: Wash Your Hands Thoroughly

Start by washing your hands with soap and warm water for at least 20 seconds. This reduces the risk of contamination. Dry them with a clean towel.

Step 2: Prepare Your Workspace

Choose a clean, well-lit area where you can lay out all your supplies. Wipe down the surface with an alcohol wipe if needed. Make sure pets and children are away from your workspace.

Step 3: Clean the Vial Tops

Remove the plastic caps from both vials. Use a fresh alcohol prep pad to clean the rubber stopper on top of each vial. Let them air dry for a few seconds—this only takes a moment but it's important for preventing contamination.

Step 4: Draw Up the Bacteriostatic Water

Remove the cap from a new syringe. Insert the needle through the rubber stopper of the bacteriostatic water vial. Turn the vial upside down and slowly pull back on the plunger to draw the liquid into the syringe. The amount you need should match the instructions from your provider—typically between 1 and 3 ml depending on your dosing protocol.

Step 5: Add Water to the Semaglutide Powder

This is the most important step. Insert the needle into the semaglutide powder vial, but aim the needle toward the inside wall of the vial rather than directly at the powder. Slowly inject the bacteriostatic water so it gently runs down the side of the vial.

Injecting too quickly or directly onto the powder can damage the medication. Take your time here—slow and steady wins the race.

Step 6: Mix Gently

Once all the water is in the vial, remove the syringe. Gently swirl the vial in a circular motion until the powder completely dissolves. Do not shake the vial—shaking can break down the semaglutide molecules and make the medication less effective.

The solution should become clear or slightly opalescent (cloudy). This usually takes 1-2 minutes of gentle swirling. If you see any particles floating or the powder hasn't dissolved after several minutes of swirling, don't use it—contact your pharmacy.

Step 7: Label and Store Your Vial

Write the date you reconstituted the medication on the vial label. This helps you track how long it's been mixed. Store the reconstituted vial in your refrigerator between 36°F and 46°F (2°C to 8°C).

Most reconstituted compounded semaglutide remains stable for 28-30 days when refrigerated, but always follow the specific instructions that came with your medication.

Common Mistakes to Avoid

Even though reconstitution is straightforward, a few common errors can affect your medication's effectiveness:

Gender Considerations

The reconstitution process is identical for everyone, regardless of gender. However, women may want to note that hormonal fluctuations throughout the menstrual cycle don't affect how you should reconstitute or store your medication. The dosing schedule your provider prescribes takes into account your individual needs, which may differ between men and women based on factors like starting weight and metabolic response.

How Long Does Reconstituted Semaglutide Last?

Once you've mixed your semaglutide with bacteriostatic water, the clock starts ticking. Most compounded semaglutide formulations remain effective for 28-30 days when stored properly in the refrigerator.

Never freeze your reconstituted medication, and don't leave it out at room temperature for extended periods. If you're traveling, use a medical-grade cooler with ice packs to keep it at the proper temperature.

When to Contact Your Provider

Reach out to your healthcare provider if:

It's always better to ask questions than to use medication you're uncertain about.

From the Ozari Care Team

One tip we share with all our patients: take a photo or quick video of yourself reconstituting your first vial. This creates a personal reference guide you can review before your next reconstitution. Many patients tell us this simple trick gives them extra confidence, especially when preparing their second or third vial weeks later.

Ready to Start Your GLP-1 Journey?

At Ozari Health we offer compounded Semaglutide and Tirzepatide starting at $99/month prescribed by licensed physicians and shipped to your door. Learn more at ozarihealth.com.

Medically reviewed by the Ozari Clinical Care Team licensed physicians specializing in metabolic health and GLP-1 therapy. Last reviewed: April 28, 2026