What it is:
Thyroid Basics™ is a vegetarian, multi-ingredient thyroid function support formula developed by DaVinci Labs. The formula features a clinically oriented blend of L-Tyrosine, standardized herbal extracts — including the patented ForsLean® Coleus forskohlii and Commiphora mukul (guggul) — alongside a targeted array of vitamins and minerals in their most bioavailable forms, including selenomethionine, zinc glycinate, pyridoxal-5-phosphate, and L-methyltetrahydrofolate. Designed for practitioner-directed use in thyroid support protocols, Thyroid Basics™ addresses multiple dimensions of thyroid physiology including hormone synthesis, T4-to-T3 conversion, iodine utilization, and thyroid-related energy and mood support — within a single, comprehensive vegetarian capsule formula.
How it works:
Thyroid Basics™ supports thyroid health through coordinated mechanisms spanning hormone biosynthesis, peripheral hormone activation, HPA-thyroid axis regulation, and neurotransmitter precursor availability. Iodine (as potassium iodide) and L-Tyrosine serve as the two essential raw materials for thyroid hormone synthesis, with iodine incorporated into the tyrosine backbone to form triiodothyronine (T3) and thyroxine (T4) within the thyroid gland. Selenium (as selenomethionine) is a critical cofactor for type I iodothyronine deiodinase, the enzyme responsible for converting inactive T4 into the metabolically active T3 form in peripheral tissues. Zinc (as zinc glycinate) further supports the T4-to-T3 conversion process and plays a role in thyroid hormone receptor binding. ForsLean® Coleus forskohlii extract, standardized to 10 mg forskolin, has been shown to mimic the stimulatory action of thyroid-stimulating hormone (TSH) with respect to iodine uptake, supporting intracellular signaling cascades that promote thyroid gland function. Commiphora mukul (guggul) extract, standardized to guggulsterones, supports healthy thyroid hormone concentrations in circulation, particularly the T3:T4 ratio. Bacopa monnieri extract, standardized to bacosides, provides dual-action support — enhancing T4 production within the gland while simultaneously supporting focus, cognitive clarity, and mood. Vitamin B2 (riboflavin) and Vitamin B6 (as pyridoxal-5-phosphate) support thyroid hormone metabolism and iodine utilization respectively, while folate (as L-methyltetrahydrofolate calcium) addresses red blood cell production to support energy levels commonly impacted by suboptimal thyroid function. Copper (as copper glycinate) contributes to thyroid hormone production and absorption, and manganese (as manganese glycinate) supports T4 synthesis, with inadequacy of this mineral correlated with reduced thyroid activity. Chromium (as ChromeMate® niacin-bound chromium polynicotinate) provides complementary metabolic support relevant to thyroid-influenced glucose regulation.
When to use it:
Thyroid Basics™ is appropriate for practitioner-directed use in adult clients requiring comprehensive nutritional support for healthy thyroid function, thyroid hormone production, and peripheral T4-to-T3 conversion. It is particularly well-suited for integration into protocols addressing subclinical or functional thyroid insufficiency, fatigue associated with low thyroid activity, mood imbalance linked to suboptimal catecholamine or thyroid hormone status, and metabolic concerns with a thyroid component. The manufacturer recommends an initial loading phase of two capsules twice daily with food until results occur, followed by a maintenance phase of two capsules once daily with food, or as directed by a healthcare practitioner. This formula is contraindicated in clients with hyperthyroidism, bleeding disorders, cardiovascular disease, or hormone-sensitive conditions, and in those taking blood thinners, calcium channel blockers, nitrates, or statin medications. Practitioner oversight is recommended throughout the protocol.
Serving Size: 2 Capsules
Servings Per Container: 60
Suggested Use: As a dietary supplement, take 2 capsules with food, twice daily until results occur, then take 2 capsules daily with food, or as directed by your healthcare practitioner.
| Ingredient | Amount Per Serving | % Daily Value |
| Riboflavin | 5 mg | 385% |
|
Vitamin B6 (as Pyridoxal 5-Phosphate)
|
25 mg | 1,471% |
| Folate (as L-Methyltetrahydrofolate Calcium) | 400 mcg DFE | 100% |
| Iodine (as Potassium Iodide) | 225 mcg | 150% |
| Zinc (as Zinc Glycinate) | 10 mg | 91% |
| Selenium (as Selenomethionine) | 50 mcg | 91% |
| Copper (as Copper Glycinate) | 0.5 mg | 56% |
| Manganese (as Manganese Glycinate) | 5 mg | 217% |
| Chromium (as ChromeMate® Cr Polynicotinate) | 50 mcg | 143% |
| L-Tyrosine | 500 mg | † |
| Bacopa monnieri Extract (yielding Bacosides 40 mg) | 200 mg | † |
| Commiphora mukul Extract (yielding Guggulsterones 2.5 mg) | 100 mg | † |
| Coleus forskohlii (ForsLean® Brand) Extract (yielding Forskolin 10 mg) | 100 mg | † |
† Daily Value not established.
Other Ingredients: Hypromellose (capsule), microcrystalline cellulose, vegetarian leucine.
Caution: Do not take this product if you have an overactive thyroid, bleeding disorders, cardiovascular disease, or hormone-sensitive conditions, or if you are taking blood thinners, calcium channel blockers, nitrates, or statin drugs. Discontinue use 2 weeks prior to any elective surgery. If pregnant or nursing, consult your healthcare practitioner before taking this product. Keep out of reach of children. Store in a cool, dry place.
✓ Vegetarian ✓ Gluten Free
Key Ingredients
L-Tyrosine — 500 mg A conditionally essential amino acid that serves as the direct biosynthetic precursor to both thyroid hormones and key catecholamine neurotransmitters, including dopamine, norepinephrine, and epinephrine. Within the thyroid gland, tyrosine residues on thyroglobulin are iodinated and coupled to form T3 and T4, making adequate tyrosine availability a prerequisite for normal hormone synthesis. Supplemental L-tyrosine supports both thyroid hormone production and catecholamine-mediated mood regulation, helping to address the fatigue and mood imbalance commonly associated with suboptimal thyroid function.
ForsLean® Coleus forskohlii Extract — 100 mg (yielding 10 mg Forskolin) A patented, standardized extract of Coleus forskohlii root (U.S. Patent #5,804,596), manufactured by Sabinsa Corporation and standardized to 10% forskolin — the primary bioactive diterpene responsible for the extract's thyroid-stimulatory mechanism. Forskolin activates adenylyl cyclase to increase intracellular cyclic AMP (cAMP), mimicking the downstream signaling cascade of TSH with respect to iodine uptake and thyroid gland stimulation. This TSH-mimetic activity supports thyroid hormone synthesis through a receptor-independent pathway, making ForsLean® a clinically relevant botanical ingredient in thyroid function support protocols.
Selenium (as Selenomethionine) — 50 mcg An organic, amino acid-bound form of selenium with superior bioavailability compared to inorganic selenium salts such as sodium selenite, delivered in a form that mirrors selenium's natural presence in food proteins. Selenium is an essential cofactor for the iodothyronine deiodinase enzyme family, which catalyzes the conversion of the relatively inactive prohormone T4 into the metabolically active T3 in peripheral tissues. Adequate selenium status is therefore critical not only for thyroid hormone activation but also for overall thyroid hormone metabolism and cellular antioxidant defense within thyroid tissue via selenoprotein P and glutathione peroxidase activity.
Iodine (as Potassium Iodide) — 225 mcg A highly bioavailable inorganic iodine source delivered as potassium iodide, providing 150% of the daily value for this essential trace element in a single serving. Iodine is an irreplaceable structural component of both thyroid hormones — incorporated into the tyrosine backbone of thyroglobulin by thyroid peroxidase to form monoiodotyrosine (MIT) and diiodotyrosine (DIT), which are then coupled to yield T3 and T4. Adequate iodine intake is a fundamental prerequisite for normal thyroid hormone biosynthesis and is among the most evidence-based nutritional interventions for supporting thyroid gland structure and function.
Vitamin B6 (as Pyridoxal-5-Phosphate) — 25 mg The biologically active, phosphorylated coenzyme form of vitamin B6, bypassing the hepatic conversion step required by less bioavailable forms such as pyridoxine HCl and providing immediate coenzyme availability across multiple thyroid-relevant metabolic pathways. Pyridoxal-5-phosphate supports the regulation of thyroid hormone production and facilitates the cellular utilization of iodine required for hormone biosynthesis. At 1,471% of the daily value, this formula delivers a therapeutically meaningful dose to address the substantial B6 demands of thyroid hormone metabolism, neurotransmitter synthesis, and amino acid processing.
Bacopa monnieri Extract — 200 mg (yielding 40 mg Bacosides) A standardized extract of Bacopa monnieri herb, an Ayurvedic botanical with a long history of traditional use in cognitive and neurological support applications, standardized to 20% bacosides — the primary triterpenoid saponin glycosides responsible for its documented pharmacological activity. Bacosides support thyroid gland function by promoting T4 production within the gland, while simultaneously providing adaptogenic cognitive support through modulation of acetylcholine neurotransmission and antioxidant activity in neuronal tissue. This dual thyroid and cognitive mechanism makes Bacopa monnieri a uniquely relevant botanical ingredient for clients in whom thyroid insufficiency presents alongside cognitive sluggishness, reduced focus, or mood imbalance.
Commiphora mukul Extract — 100 mg (yielding 2.5 mg Guggulsterones) A standardized resin extract from the Commiphora mukul tree — the source of the traditional Ayurvedic compound guggul — standardized to guggulsterones, the primary steroidal plant constituents with characterized thyroid-supportive activity. Guggulsterones have been shown to support healthy thyroid hormone concentrations in circulation, particularly by promoting a favorable T3:T4 ratio — a clinically meaningful marker of efficient peripheral thyroid hormone activation. This mechanism provides complementary support to the selenium-dependent deiodinase pathway within the formula, collectively reinforcing the conversion and availability of metabolically active T3.
Zinc (as Zinc Glycinate) — 10 mg A chelated, amino acid-bound form of zinc with enhanced gastrointestinal tolerability and bioavailability compared to inorganic zinc salts, providing 91% of the daily value per serving. Zinc is directly involved in the enzymatic conversion of T4 to the more metabolically active T3 and plays a structural role in thyroid hormone receptor binding, influencing the downstream cellular response to circulating hormone levels. Adequate zinc status is essential throughout the full thyroid hormone axis — from synthesis and conversion to receptor-level activity — making zinc glycinate a foundational mineral inclusion in a comprehensive thyroid support formula.
