When thyroid medication stops working

Millions of Indians are on thyroxine. For many, the dose only goes in one direction: up. Symptoms don't fully resolve. Fatigue, hair fall, weight gain, brain fog — they stay, even when the TSH is technically "in range."

What's usually missing

• Anti-TPO antibodies — if autoimmunity is driving the picture, TSH alone misses it.
• Free T3 / reverse T3 — your body may not be converting T4 to T3 effectively.
• Gut barrier health — most Hashimoto's is gut-driven.
• Nutrient deficiencies — selenium, iron, vitamin D, zinc.
• Stress physiology — cortisol blocks T4 → T3 conversion.

The root-cause approach

Fix the upstream drivers — gut, inflammation, nutrients, stress — and the thyroid itself often stabilises. Antibodies come down. Dose can be reduced. Symptoms resolve.

If your thyroid dose keeps going up, the thyroid isn't the problem.