How to Read Your GLP-1 Prescription: A Patient Guide

You've just received your first GLP-1 prescription in the mail, and as you hold that little vial in your hand, you might feel a mix of excitement and overwhelm. The label has numbers, abbreviations, and medical terms that might as well be written in another language. If you're staring at "Semaglutide 0.5mg/0.5mL" or "Tirzepatide 2.5mg subcutaneous injection" and wondering what it all means, you're not alone. Let's break down every part of your prescription together so you can feel confident, informed, and ready to start your treatment.

The Basics: What You're Looking At

Your GLP-1 prescription label contains critical information that tells you exactly what medication you have, how much to use, and how to use it safely. Think of it as your medication's instruction manual and identification card rolled into one.

At the top, you'll see your name, your prescribing physician's name, and the pharmacy information. Always double-check that the name matches yours—it sounds obvious, but this simple step prevents medication errors.

Understanding the Medication Name

Your prescription will list either the generic name (like semaglutide or tirzepatide) or a brand name (like Ozempic, Wegovy, or Mounjaro). Many patients receive compounded versions, which means the medication is prepared by a specialized pharmacy to your doctor's specifications.

If you see the word "compounded" on your label, this simply means your medication was custom-prepared rather than manufactured by a pharmaceutical company. Compounded GLP-1 medications contain the same active ingredients as brand-name versions and are prepared in licensed facilities that follow strict safety standards.

Generic vs. Brand Names

Semaglutide is the generic name for medications sold as Ozempic (approved for type 2 diabetes) and Wegovy (approved for weight management). Tirzepatide is the generic name for Mounjaro (diabetes) and Zepbound (weight management). The active ingredient is the same—the difference is often the maximum available dose and the FDA-approved indication.

Decoding the Concentration

This is where things can look confusing. You might see something like "2.5mg/0.5mL" or "0.25mg per dose." Let's break this down.

The first number tells you how much medication (in milligrams) is in a specific volume of liquid (in milliliters). So "2.5mg/0.5mL" means there are 2.5 milligrams of the active drug in half a milliliter of liquid.

This concentration tells your pharmacist and your doctor exactly what you're receiving, but here's what matters most to you: your doctor will prescribe a specific dose in milligrams, and your pen or syringe will be marked to deliver exactly that amount. You don't need to do any math—the delivery device does it for you.

Starting Doses vs. Maintenance Doses

Most GLP-1 prescriptions start low and increase gradually. For semaglutide, you typically start at 0.25mg weekly for four weeks, then increase to 0.5mg. For tirzepatide, the starting dose is usually 2.5mg weekly.

Your prescription label might say "titration schedule" or "dosing protocol"—this refers to the plan for gradually increasing your dose over time. This gradual approach helps your body adjust and minimizes side effects like nausea and digestive discomfort.

Route of Administration

You'll see terms like "subcutaneous injection" or "subQ." Subcutaneous means under the skin—not into a muscle or vein. This is the shallow type of injection you'll give yourself, usually in your abdomen, thigh, or upper arm.

If you see "IM" (intramuscular), that's incorrect for GLP-1 medications—contact your pharmacy. These medications should always be subcutaneous.

Frequency and Timing

Your prescription will specify how often to take your medication. Most GLP-1s are once weekly, though some (like liraglutide/Saxenda) are daily.

For weekly medications, you might see "inject once weekly on the same day each week" or "administer every 7 days." You can choose any day that works for your schedule—many patients pick Sunday or Monday to stay consistent.

The label might also note that you can take it with or without food. Unlike many medications, GLP-1s don't need to be timed around meals, which gives you flexibility.

Storage Instructions

This section is crucial for keeping your medication effective. Most GLP-1 medications must be refrigerated between 36°F and 46°F (2°C to 8°C) until first use.

After you start using a vial or pen, some can be kept at room temperature for a certain number of days—usually 28 to 56 days depending on the specific medication. Check your label for "discard after" dates.

Never freeze your GLP-1 medication. If it freezes, it's no longer safe to use. Also keep it away from direct light and heat.

The Prescription Number and Refill Information

Your Rx number is your prescription's unique identifier. You'll need this when calling for refills or if you have questions about your medication.

The label will also tell you how many refills are authorized. GLP-1 medications typically require ongoing monitoring, so your doctor might write prescriptions with limited refills to ensure regular check-ins.

Important Warnings and Precautions

Your label will include critical safety information. Common warnings include:

• Do not use if you have a personal or family history of medullary thyroid carcinoma or Multiple Endocrine Neoplasia syndrome type 2
• Contact your doctor if you experience severe abdominal pain, which could indicate pancreatitis
• Watch for signs of allergic reaction
• Do not share pens or needles with others, even if the needle is changed

These aren't meant to scare you—they're there to keep you informed and safe.

For Women

If you're of childbearing age, your prescription label or accompanying information should note that you should discontinue GLP-1 medications at least two months before a planned pregnancy. These medications are not recommended during pregnancy or breastfeeding. If you have irregular cycles or PCOS, be aware that weight loss can restore ovulation—you may become more fertile on treatment, so discuss contraception with your doctor if pregnancy prevention is important to you.

For Men

Men often respond well to GLP-1 medications and may experience more rapid initial weight loss compared to women, though this evens out over time. If you're experiencing erectile dysfunction related to metabolic health, you may see improvement as your weight and blood sugar optimize. Your prescription instructions are the same, but pay attention to injection site rotation—many men prefer the abdomen or thigh over the upper arm.

From the Ozari Care Team

Keep your prescription label or take a photo of it for your records. If you ever switch pharmacies or see a new provider, this information is invaluable. And remember: your dose is personalized to you—never adjust it without talking to your prescribing physician, even if a friend is taking a different amount.

Questions to Ask If Something's Unclear

Don't hesitate to contact your pharmacy or prescribing doctor if:

• The concentration doesn't match what you were told to expect
• You're unsure which pen or syringe setting delivers your prescribed dose
• The storage instructions seem different from what you've read
• The medication looks different than previous refills (discoloration, particles, cloudiness)

Your care team wants you to feel confident, and no question is too small when it comes to your health and safety.

Start Your GLP-1 Journey With Confidence

Understanding your prescription is the first step toward successful treatment. Now that you know how to read every part of that label, you can focus on what really matters: taking your medication correctly, tracking your progress, and working toward your health goals with knowledge and confidence.

At Ozari Health, we offer compounded Semaglutide and Tirzepatide as low as $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 24, 2026