MYTH: Synthroid (synthetic thyroid or T4, Thyroxine) works and is more effective than thyroid glandular.
The truth: Synthroid is cardiotoxic, shrinks the thyroid gland, suppresses cellular respiration, suppresses the pituitary and rarely improves symptoms, except in very healthy people who can convert the T4 to T3 (Cytomel or Triiodothyronine). Many people get worse, especially women, because low thyroid women are estrogen dominant and estrogen inhibits the conversion of T4 to T3. A healthy man has less difficulty converting T4 to T3 and can benefit from Synthroid.
The truth: Synthroid is cardiotoxic, shrinks the thyroid gland, suppresses cellular respiration, suppresses the pituitary and rarely improves symptoms, except in very healthy people who can convert the T4 to T3 (Cytomel or Triiodothyronine). Many people get worse, especially women, because low thyroid women are estrogen dominant and estrogen inhibits the conversion of T4 to T3. A healthy man has less difficulty converting T4 to T3 and can benefit from Synthroid.