Understanding GLP-1 Dosing: mg, mL, Units & Common Additives Explained

If you are starting semaglutide or tirzepatide treatment, you may notice terms like:

• mg

• mL

• units

• B12

• B6

• L-Carnitine

At first, these labels can seem confusing. Understanding what they mean can help you feel more comfortable and confident with your treatment.

What Does “mg” Mean?

mg stands for milligrams and refers to the amount of medication itself.

Examples:

• 1mg semaglutide

• 2.5mg tirzepatide

In general, a higher mg number means a higher medication dose.

What Does “mL” Mean?

mL stands for milliliters, which measures liquid volume.

The amount of liquid in a syringe does not always equal the amount of medication. Different pharmacies may prepare medications at different concentrations.

For example:

• Two patients may inject the same number of “units”

• But receive different medication doses depending on concentration

This is why it is important to always follow your specific prescription instructions.

What Are “Units”?

Many insulin syringes are marked in units instead of milliliters.

Examples:

• 50 units = 0.5mL

• 25 units = 0.25mL

• 10 units = 0.1mL

Your prescribed number of units depends on:

• the medication concentration

• the pharmacy formulation

• your prescribed dose

Never compare your syringe markings with another patient’s instructions.

Why Do Different Pharmacies Use Different Strengths?

Compounded GLP-1 medications may come in different:

• vial sizes

• concentrations

• total medication amounts

This does not necessarily mean one medication is “stronger” or “better.” It simply means the dosing instructions may differ depending on the pharmacy and formulation.

Always follow:

• your prescription label

• your physician’s instructions

• your dosing schedule

Common Additives Explained

Some compounded formulations may include additional ingredients.

Why Does My Medication Look Red or Pink?

Some compounded GLP-1 medications may appear red or pink because they contain Vitamin B12 (Cyanocobalamin or Methylcobalamin).

Vitamin B12 naturally has a deep red color, which can change the appearance of the medication inside the vial. This is normal and does not mean the medication is contaminated or unsafe.

Some pharmacies include Vitamin B12 in compounded formulations as part of the preparation prescribed by your healthcare provider.

If you ever notice:

• cloudiness

• particles

• unusual discoloration

• or changes different from previous vials, contact your healthcare provider or pharmacy before using the medication.

• Always follow the instructions provided with your prescription.

Vitamin B12 (Cyanocobalamin or Methylcobalamin)

Vitamin B12 is sometimes added to support:

• energy metabolism

• overall wellness

Vitamin B6 (Pyridoxine)

Vitamin B6 may be included in some formulations and is commonly associated with:

• energy metabolism

• nutritional support

L-Carnitine (Levocarnitine)

L-Carnitine is an amino acid derivative involved in:

• fat metabolism

• cellular energy production

Important Safety Reminder

Never assume:

• more liquid means a stronger dose

• another patient’s syringe markings match yours

• all pharmacies use the same concentration

If you ever have questions about your medication or dosing instructions, contact your healthcare provider before injecting.

Questions About GLP-1 Treatment?

Northern Colorado Medical provides physician-supervised semaglutide and tirzepatide treatment throughout Colorado through convenient telehealth visits.

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Call or Text: 970-557-1269

www.northerncoloradomedical.com