Phase 4: T3 Thyroid Therapy (Rebooting Your Metabolism)

Many people with chronic illness are stuck in a state where their body is "hibernating" to save energy. Even if your blood tests look normal, your body might not be using thyroid hormones correctly. This phase uses a hormone called T3 to "reboot" your body’s thermostat and turn your energy back on.

Is This Therapy Right for You?

Main Requirements (You must have these)

1. Low Waking Temperature: Is your temperature consistently below 36.5°C (97.7°F) first thing in the morning? This is the main sign your metabolism is slow.
2. Low Heart Rate: Is your resting heart rate below 72 beats per minute? This also suggests a slow metabolism.
Warning: If your heart rate is above 90 beats per minute, you must talk to a doctor before starting this.

Other Common Symptoms

(Check how many you have – the more you have, the more likely you need this)

Quick Check:

Low Morning Temp + Low Pulse + 3 or more symptoms You may be a good candidate for T3 therapy.

Track your temp and pulse for one week to be sure.

Important: Always talk to a doctor before starting hormone therapy.

Introduction to T3 Therapy

Overview: This therapy uses T3 (thyroid hormone) to help with fatigue and low body temperature. The goal is to "restart" your metabolism.

The Best Way: Slow-Release T3 (SR-T3)

We strongly recommend using Slow-Release T3 (SR-T3).

Where to Get T3

One trusted source for Slow-Release T3 is chronic-illness.ca. They specialize in this medication and can ship to many places.

If you have trouble getting your medication, Yannick can help you find a way to get what you need.

Why Your Blood Tests Might Lie to You

The Real Problem: Tissue-Level Resistance

Most doctors look at your blood to see if you have enough T3. But just because T3 is in your blood doesn't mean it’s getting inside your cells where it’s needed. This is called tissue-level resistance.

Think of T3 as a "key" and your cells as "doors." In many sick people, the locks are jammed. The T3 keys are floating around in the hallway (your blood), but they can’t get into the rooms (your cells) to turn on the power. When a doctor draws your blood, they see plenty of keys and say, "You're fine!"—even though your body is actually starving for energy.

Brain Insulin Resistance

This problem is especially serious in the brain. When T3 can't get into your brain cells correctly, it leads to a type of "brain insulin resistance." This causes major brain fog, memory problems, and severe fatigue. Even if you eat enough food, your brain can't use that energy properly without the T3 "key" to unlock the process.

Other Signs of Resistance:

T3 therapy is used to "flood" the system with enough T3 to finally force those jammed locks open and wake your body up.

The Role of Genetics: In some cases, your genetics can play a big role in how your body handles T3. Fasting, stress, and low-carb can have different effects on different people. To learn more about this, visit the Genetic Polymorphisms page.

The 30-Day T3 Cycle

This plan is designed to wake up your body's metabolism. It involves a 10-day "climb" followed by a 20-day "descend."

Phase Time What to Do
The Climb 10 Days The Hike Up: Increase your total daily dose by about 15 mcg every single day.
Example: Day 1 = 15mcg, Day 2 = 30mcg, Day 3 = 45mcg...
Note: Split your total dose into two parts—one in the morning and one in the evening.
The Peak 1–3 Days Stay at your highest dose for a few days to "break" your metabolism’s resistance. If your heart races or you feel anxious, stop increasing.
The Taper 20 Days The Hike Down: Slowly lower your dose back to zero.
This lets your thyroid start making its own hormones again without a crash.
Simplified T3 Protocol Chart

Figure 1: Simplified T3 Protocol Dosing & Tracking Chart

Safety First

Is your heart racing? If your resting heart rate is over 100 beats per minute, STOP INCREASING. Stay at your current dose or lower it until your heart rate slows down.
Are you using "Instant" T3? WARNING: This fast 10-day climb is only for Slow-Release T3. Do not try this with regular "instant" T3 unless you are very careful and take many small doses throughout the day.
Having trouble stopping? If you feel bad while lowering your dose, your doctor might suggest a small dose of T4 to help your body adjust.

Keeping Your Progress

Need Personalized Guidance?

What you get: Access to years of highly synthesized data, a personal researcher, coach, and someone who had severe ME/CFS, Long Covid all in one. You will also get personal help with acquiring medication.

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T3 Therapy Log & Findings

Log temperatures, dosages, and heart rate response daily.