Can I get compounded GLP-1 without B vitamins?
Belle Answers · GLP-1 · Updated Oct 23, 2026
Short answer: Yes.
If you have an allergy or sensitivity to B vitamins, your compounded GLP-1 is made with L-carnitine or glycine instead of a B vitamin. Neither one is a B vitamin.
Most tirzepatide patients now receive the L-carnitine version anyway, so you may already be on a formulation without B vitamins. Check your vial label, or message us and we will confirm.
What's in it
Most compounded GLP-1 medications include an added ingredient beyond the active drug, often a B vitamin such as pyridoxine (B6), cyanocobalamin (B12), or niacinamide (B3).
For patients with a B vitamin allergy or sensitivity, Belle's pharmacy partners use one of these instead:
- L-carnitine: an amino acid derivative. Not a B vitamin.
- Glycine: a naturally occurring amino acid added as a buffering agent. Not a B vitamin.
Belle no longer offers a version with no added ingredient at all. Always check the label that ships with your order for a complete ingredient list.
Who qualifies?
A formulation without B vitamins is available to patients who indicate a B vitamin allergy or sensitivity on their Belle intake questionnaire. Your clinician reviews this as part of your treatment plan.
Important: This is a clinical pathway for patients with a genuine B vitamin allergy or sensitivity, not a preference-based option.
How do I get it?
If you're a new patient: Indicate your B vitamin allergy or sensitivity when you complete your intake questionnaire. Your clinician will factor it into your treatment plan from your first prescription.
If you're already a Belle patient and did not indicate a B vitamin allergy during your original intake: message your care team through the patient portal, and we'll update your record and coordinate with your clinician.
Whether you get L-carnitine or glycine depends on which pharmacy partner fills your order. Your label lists every ingredient.
Will it work the same as standard compounded GLP-1?
Yes. The active medication is the same, tirzepatide or semaglutide, at the same prescribed dose. The added ingredient doesn't change your dose or how your medication works.
Education only, not medical advice.