T3

T3

What is Cytomel (T3) Used For?

• Primary medical use: Treat hypothyroidism, especially in cases where the patient does not respond well to T4-only medications like levothyroxine (Synthroid).

• Sometimes used in the treatment of:

  • Myxedema coma (severe hypothyroidism)

  • Thyroid suppression tests

  • Depression (as an adjunct to antidepressants in some treatment-resistant cases)

• Off-label use: Weight loss or bodybuilding (not medically recommended).

???? How T3 (Cytomel) Works

• T3 is the active form of thyroid hormone — more potent and faster-acting than T4.

• It directly affects metabolism, energy levels, heart rate, and body temperature.

???? Dosage & Administration

• Standard medical doses: 5 mcg to 25 mcg daily, depending on the condition.

• Bodybuilders sometimes use 25–75 mcg/day during cutting cycles (⚠️ risky and not medically advised).