For doctors
Request a partnership call.
A pharmacist will follow up within two business days. We'll cover state availability, supported formulations, and what integration looks like for your clinic.
Medications · Energy & nutritional
L-Carnitine
Mitochondrial transporter for fatty-acid metabolism.
What it does
What L-Carnitine is and why doctors prescribe it.
L-carnitine is an amino-acid derivative essential for transporting long-chain fatty acids into mitochondria for beta-oxidation. Doctors prescribe injectable L-carnitine for documented carnitine deficiency, and as part of metabolic programs where the clinical picture supports it.
How it works
Mechanism in plain English.
L-carnitine binds long-chain fatty acids and shuttles them across the inner mitochondrial membrane. Without it, those fatty acids can't be oxidized to produce ATP. Acetyl-L-carnitine, a related form, additionally supports cognitive and neurological pathways.
How long it's been studied
Research history.
Carnitine has been clinically studied since the 1950s; FDA-approved L-carnitine (Carnitor) treats primary and secondary carnitine deficiencies. Compounded L-carnitine is dispensed under 503A.
Dosing
Clinical context for the prescribing doctor.
Doctor-prescribed. Injectable L-carnitine is typically dispensed at strengths in the 200–500 mg/mL range for SC or IM administration; oral forms come in capsules and liquids at 250–500 mg per dose. Your doctor selects route and dose.
This page is informational, not a dispensing aid. L-Carnitine is dispensed only on a patient-specific prescription written by a licensed doctor for an identified patient. Compounded drugs are not FDA-approved and should not be evaluated using branded-drug trial data. Availability varies by state and prescribed medication.
How to access L-Carnitine through RonanRx
Three paths.
Doctors can prescribe compounded L-Carnitine for individual patients through RonanRx. Patients with a doctor can sign up to receive their prescription. Patients without a doctor can learn how the referral works.
Patient with a doctor
Sign up to receive your prescription.
If your doctor has already prescribed L-Carnitine, sign up so we can prepare and ship your medication. The signup wizard collects intake and connects you to the prescribing workflow.
Patient without a doctor
Get referred by a partner clinic.
RonanRx prescribes through partner clinics — we don't initiate prescriptions on this site. Read how the referral process works and how to find a partner clinic in your state.
Related