What it is: Gaia Herbs Pro Thyroid Formula is a four-ingredient thyroid and metabolic support formula delivering 100 mcg of Iodine from ecologically harvested Kelp fronds and Brown Seaweed fronds, 80 mg of Ashwagandha (Withania somnifera) root extract, and a 630 mg Proprietary Extract Blend of Coleus forskohlii root, L-Tyrosine, and Schisandra (Schisandra chinensis) berry in a vegan Liquid Phyto-Cap® — Gaia Herbs' proprietary liquid-filled capsule format providing concentrated, alcohol-free herbal extracts with enhanced bioavailability. Each 2-capsule serving delivers 2700 mg of crude herb equivalent. Vegan, gluten-free, non-GMO, and sourced from ecologically harvested botanicals.
How it works: Iodine (100 mcg, 67% DV, from Kelp and Brown Seaweed fronds) provides the essential mineral substrate for thyroid hormone biosynthesis — Iodine is incorporated into thyroxine (T4) and triiodothyronine (T3) by thyroid peroxidase, making it the rate-limiting nutrient for thyroid hormone production. L-Tyrosine — the amino acid co-substrate for thyroid hormone synthesis alongside Iodine — is incorporated into thyroglobulin to form the iodotyrosine precursors that are coupled to produce T4 and T3, directly supporting the biosynthetic capacity of the thyroid gland. Ashwagandha root extract (80 mg) supports HPA axis regulation and has demonstrated in clinical research the capacity to support healthy T3 and T4 levels and TSH normalization in adults with subclinical hypothyroid tendencies, through a combination of adaptogenic stress modulation and direct thyroid-supportive activity. Coleus forskohlii root contributes forskolin — a diterpene that activates adenylate cyclase and elevates intracellular cAMP, stimulating thyroid hormone secretion and supporting thyroid cell metabolic activity. Schisandra berry provides adaptogenic HPA axis-normalizing and hepatoprotective activity — supporting the hepatic conversion of T4 to the more biologically active T3 and reducing the allostatic stress burden that suppresses thyroid function.
When to use it: Indicated for adults requiring thyroid hormone biosynthesis support, healthy metabolic function, neuromuscular tone, weight management, and cardiovascular metabolic balance — particularly in presentations of subclinical hypothyroid function, low-normal T3/T4, or stress-suppressed thyroid activity. Two capsules in the morning and 1 capsule in the evening, between meals. Contraindicated during pregnancy. Consult a healthcare practitioner before use if nursing, taking medications — particularly thyroid medications — or managing a medical condition.
Serving Size: 2 Capsules
Servings Per Container: 60
Suggested Use: As a dietary supplement, adults take 2 capsules in the morning and 1 capsule in the evening between meals, or as directed by your healthcare practitioner.
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Calories | 5 | — |
| Total Carbohydrate | 2 g | <1% |
| Iodine (from Kelp fronds and Brown Seaweed fronds) | 100 mcg | 67% |
| Ashwagandha (Withania somnifera) root extract | 80 mg | † |
| Proprietary Extract Blend (Coleus forskohlii root, L-Tyrosine, Schisandra (Schisandra chinensis) berry) | 630 mg | † |
† Daily Value not established.
Other Ingredients: Vegetable glycerin, sunflower lecithin, water, vegan capsule (hypromellose, chlorophyll).
Caution: Not for use during pregnancy. If nursing, have a medical condition, or take medications — particularly thyroid medications — consult your healthcare practitioner before use. Use only as directed on label. Safety sealed for your protection. Keep bottle capped at all times and store in a cool, dry place. Natural separation may occur — this does not affect product quality. Keep out of reach of children.
✓ Vegan ✓ Gluten Free ✓ Soy Free ✓ Non-GMO ✓ Ecologically Harvested Botanicals ✓ No Artificial Colors, Flavors, or Preservatives
Key Ingredients:
Iodine (from Kelp fronds and Brown Seaweed fronds) — 100 mcg (67% DV) Iodine is the essential mineral substrate for thyroid hormone biosynthesis — incorporated into thyroglobulin by thyroid peroxidase to form monoiodotyrosine (MIT) and diiodotyrosine (DIT), which are coupled to produce thyroxine (T4) and triiodothyronine (T3). Delivered here as a naturally occurring organic iodine complex from ecologically harvested Kelp (Laminaria) and Brown Seaweed fronds, this form provides iodine alongside naturally co-occurring iodine cofactors, trace minerals, and fucoidan polysaccharides rather than as an isolated iodide salt. At 100 mcg per serving (67% DV), this formula provides a clinically meaningful iodine contribution to support healthy thyroid hormone biosynthetic capacity without the risk of excess iodine supplementation that can paradoxically suppress thyroid function in sensitive individuals.
Ashwagandha (Withania somnifera) root extract — 80 mg Ashwagandha root is delivered as a concentrated liquid extract, providing withanolides and glycowithanolides with documented HPA axis-regulatory, adaptogenic, and direct thyroid-supportive activity. Published clinical research has demonstrated that Ashwagandha supplementation supports healthy T3 and T4 serum levels and TSH normalization in adults with subclinical hypothyroid presentations — attributed to a combination of cortisol-lowering HPA axis modulation that relieves stress-driven TSH suppression and direct stimulatory effects on thyroid hormone secretion. At 80 mg per serving in Gaia's liquid phyto-cap format, Ashwagandha provides the formula's primary adaptogenic and HPA axis-thyroid axis bridging activity — addressing the neuroendocrine stress-thyroid interface that conventional iodine-only thyroid formulas do not target.
Proprietary Extract Blend (Coleus forskohlii root, L-Tyrosine, Schisandra berry) — 630 mg This 630 mg proprietary blend delivers three complementary thyroid-supportive actives in Gaia's concentrated liquid extract format. Coleus forskohlii root contributes forskolin — a labdane diterpene that directly activates adenylate cyclase and elevates intracellular cAMP, stimulating thyroid cell secretory activity and hormone release through a mechanism distinct from TSH-receptor signaling. L-Tyrosine provides the amino acid co-substrate for thyroid hormone biosynthesis alongside Iodine — its incorporation into thyroglobulin is the structural foundation from which T3 and T4 are synthesized. Schisandra berry contributes adaptogenic HPA axis-normalizing, hepatoprotective, and antioxidant activity — supporting the hepatic T4-to-T3 conversion that produces the metabolically active thyroid hormone form and reducing the cortisol-driven HPA axis suppression that impairs thyroid function in chronically stressed individuals.
