T3/T4Rx
A compounded oral capsule containing liothyronine (T3) and levothyroxine (T4), a thyroid hormone preparation offered through provider-directed treatment programs. Prescribed only when a licensed provider determines it is clinically appropriate. Compounded, not FDA-approved. Individual results vary.
- Capsule · Taken by mouth, as prescribed
- Prescribed only if a licensed provider determines it is appropriate
- Provider evaluation and lab testing where appropriate
- Online provider review
- Medication, if prescribed
- U.S.-licensed pharmacies
- Pause or cancel anytime
Shown before checkout
- U.S.-licensed providers
- Ongoing, expert support
- Free, discreet shipping
- 100% online
Frequently asked questions
Do I need a prescription for T3/T4?Yes. T3/T4 is a prescription treatment. A licensed provider reviews your online intake and decides whether it is appropriate for you.
Do I need lab work first?Hormone therapy requires a provider evaluation and lab testing where appropriate. Your provider will let you know which labs are needed.
Is T3/T4 FDA-approved?No. Compounded medications are not FDA-approved. The FDA does not evaluate compounded medications for safety, effectiveness, or quality. They are not a generic version of, or a substitute for, any brand-name product. All treatment decisions are made by a licensed medical provider based on an individual evaluation.
Do I need insurance?No. ViaRx Health does not require insurance.
How is it shipped?If prescribed, your medication is filled by a licensed U.S. pharmacy and shipped to your door in discreet packaging.
Who may be eligible
- Adults 18 and older
- Located in a state where ViaRx Health services are available
- Complete an online intake about your health history
- Complete the required lab testing
A licensed provider decides whether treatment is clinically appropriate. Completing an intake does not guarantee a prescription.
Important safety information
Your provider will review potential side effects, interactions and safety information with you before prescribing T3/T4. Tell your provider about all medications you take and any health conditions you have.
Not for emergencies. If you are experiencing a medical emergency, call 911 or go to the nearest emergency room.
Disclaimer
Compounded medications are not FDA-approved. The FDA does not evaluate compounded medications for safety, effectiveness, or quality. They are not a generic version of, or a substitute for, any brand-name product. All treatment decisions are made by a licensed medical provider based on an individual evaluation. ViaRx Health is a technology platform and does not prescribe, dispense, or compound medications. All clinical and treatment decisions are made by independent licensed providers, and all prescriptions are filled and shipped by licensed pharmacies.
What is T3/T4?
(Liothyronine (T3) & levothyroxine (T4))
A compounded oral capsule containing liothyronine (T3) and levothyroxine (T4), a thyroid hormone preparation offered through provider-directed treatment programs. Prescribed only when a licensed provider determines it is clinically appropriate. Compounded, not FDA-approved. Individual results vary.
Used in hormone replacement therapy. A licensed provider decides whether it is right for you.
Get startedYour care planProvider-guided
- Treatment
- T3/T4
- Form
- Capsule
- How it is taken
- Taken by mouth, as prescribed
- Prescribed by
- U.S.-licensed provider
- Filled by
- Licensed U.S. pharmacy
- Lab testing
- Required first
- Intake
- Labs & review
- Delivery
Care from U.S.-licensed providers
Every intake is reviewed by an independent, U.S.-licensed provider who decides whether treatment is clinically appropriate. If it is, a licensed U.S. pharmacy fills your prescription.
- Every intake reviewed by a licensed provider
- Prescriptions filled by licensed U.S. pharmacies
- Ongoing messaging with your care team
Provider reviewComplete
- Intake received
- Health history reviewed
- Lab results reviewed
- Plan ready
ViaRx
Hello, Sarah!
Here is your plan at a glance.
Personalized for you
A plan built around you
Your provider considers your health history, goals and preferences before recommending any treatment, and your care team is a message away as you go.
Get startedHow it works
Getting started takes a few minutes
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1
U.S.-licensed
Hi, I'm reviewing your intake now. Do you have any questions before I decide on next steps?
Thanks! Just one about how T3/T4 is taken.
Clinician-led
Connect with a licensed provider
Complete a short online intake. An independent, U.S.-licensed provider reviews it along with your lab results and decides whether treatment is appropriate for you. 100% online, no in-person visit.
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2
Discreet shipping
Get your discreet shipment
If prescribed, a licensed U.S. pharmacy fills your prescription and ships it to your door in plain packaging.
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3
Ongoing support
Stay in touch with your care team
Message your care team with questions, and check in with your provider as your plan continues.











