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Spectra 303-T (Integrative Therapeutics)

Spectra 303-T (Integrative Therapeutics)

$49.90

Glandular ingredients, plus iodine and acetyl-l-tyrosine, to support thyroid function.*

Spectra 303-T provides a high quality, thyroxine-free glandular extract with L-tyrosine, iodine, and other nutrients to support healthy thyroid function.* Research shows that L-tyrosine and iodine are critical for the production of the thyroid hormones, thyroxine (T4) and triiodothyronine (T3).

  • Contains a freeze-dried thyroid glandular
  • Supports metabolism and immune health*
  • Helps maintain healthy energy levels*


Take 1 tablet one to three times daily, or as recommended by your healthcare professional.


Serving Size: 1 Tablet

Amount Per Serving
Iodine ... 225mcg
(from potassium iodide)
Zinc ... 10mg
(from zinc gluconate)
Copper ... 500mcg
(as copper gluconate)
L-Tyrosine ... 100mg
Thyroid ... 100mg
(thyroxine-free)

Other Ingredients: cellulose, dicalcium phosphate, modified cellulose gum, stearic acid, magnesium stearate, silicon dioxide, modified cellulose, glycerin, and carnauba wax.

Spectra 303-T Does Not Contain

  • artificial coloring
  • artificial flavoring
  • dairy products
  • gluten
  • preservatives
  • salt
  • soy
  • sugar
  • wheat
  • yeast


If pregnant, nursing, or taking prescription drugs, consult your healthcare professional prior to use.

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