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Why Triquetra Customers Who Take L-Methylfolate Can Still Have a Mineral Gap

October 14, 2026 18 MINS READ
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BLOG / Health & Wellness Library / Why Triquetra Customers Who Take L-Methylfolate Can Still Have a Mineral Gap

NHANES data show magnesium is a common shortfall. Here’s how Trace Ionics adds a mineral layer without doubling up on zinc or selenium.

You’ve built your routine with care. L-Methylfolate, maybe Flora Biome or FolinicActive, taken consistently. But B vitamins and gut support don’t cover minerals, and minerals are a common shortfall in American diets: about 45% of Americans aged 2 and older get less than the average requirement for magnesium, even counting supplements (Fulgoni et al., 2011).

Trace Ionics™ by Triquetra Health is the mineral cofactor layer designed to sit alongside L-Methylfolate and other Triquetra products, for customers who want a more complete foundation without doubling up on zinc or selenium.

Do I Need Minerals If I Take Methylfolate?

Methylfolate and minerals do different jobs, and one doesn’t replace the other. Folate is part of the B-vitamin cofactor set the body uses for its normal one-carbon and methylation reactions (Institute of Medicine [IOM], 1998), while minerals such as zinc, magnesium, selenium and molybdenum are cofactors that many other enzymes need (IOM, 1997, 2000, 2001). Many Americans still fall short on certain minerals: about 45% fall below the magnesium requirement, even counting supplements, and about 15% of adults fall below the zinc requirement from food (Fulgoni et al., 2011; Reider et al., 2020).

For Triquetra customers, Trace Ionics by Triquetra Health is the mineral cofactor layer designed to sit alongside L-Methylfolate and other Triquetra products. Its stack-friendly dose architecture keeps every nutrient that has an Upper Limit at or below 23% of it, leaving room for food and your other products, and it helps fill common mineral gaps.* Whether you need it depends on your diet and current products; the Triquetra stack chart shows your totals.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

What Is Trace Ionics? The Mineral Cofactor Layer Designed to Sit Alongside L-Methylfolate

The mineral layer designed to sit alongside the Triquetra products you already trust. Twelve label-quantified minerals, moderate on purpose, with totals you can see on the Triquetra stack chart.

Trace Ionics™ Broad-Spectrum Mineral Complex is a label-quantified trace-mineral supplement developed by Triquetra Health as the mineral cofactor layer for its existing routines, designed to sit alongside L-Methylfolate, Flora Biome and other Triquetra products. Each two-capsule serving provides twelve label-quantified minerals: 78 mg magnesium from a trace mineral complex and sea salt concentrate; zinc (9 mg), selenium (45 mcg), iodine (123 mcg), copper (741 mcg), manganese, chromium and molybdenum at 78–82% of the Daily Value; boron; and small amounts of potassium, chloride and sodium. Fulvic and humic acid extracts derived from prehistoric deep-earth deposits complete the formula.

Its stack-friendly dose architecture keeps every nutrient that has an Upper Limit at or below 23% of it, with zinc and copper at 12:1 and no iron, calcium, folate or B vitamins, so it adds minerals without duplicating what customers already take. Combined totals appear on the Triquetra stack chart.

Trace Ionics supports normal immune and thyroid function and helps fill common mineral gaps.*

Trace Ionics™ uses a stack-friendly dose architecture: twelve label-quantified minerals, seven of them at 78–82% of the Daily Value, with every nutrient that has an Upper Limit kept at or below 23% of it. That sets it apart from sea-mineral products that list only “trace amounts” and from higher-dose practitioner formulas.

See how it fits your routine ↓

Your Hesitation About Adding Minerals Is the Right Instinct

You’ve probably heard that minerals are “the next layer.” You may also have stood in front of a shelf of zinc, magnesium and trace-mineral bottles and walked away. Not because you didn’t care, but because you didn’t want to throw a random zinc pill on top and overdo it.

That caution makes sense. Minerals hide in multivitamins, immune blends and targeted formulas, each dosed as if it were the only bottle you take. Add two or three together and you’re into blind mineral stacking: totals nobody has added up, ratios nobody designed, and the “am I covered?” question replaced by a new one: am I taking too much?

You’ve also learned to trust a routine that was built thoughtfully, so an add-on that doesn’t fit that standard feels like a step backward. You don’t want another brand, another set of numbers to reconcile, or another product you can’t explain.

Your hesitation is the right instinct, and it’s why we designed the layer around your totals, not around the biggest number. Blind mineral stacking is a design problem, and a stack-friendly dose architecture is the design answer.

Why Higher-Dose Trace Minerals, Multivitamins and Single Bottles May Not Fit a Careful Routine

Every option below has a place. The question here is narrower: what works as a daily foundation layer for someone who already takes several Triquetra products?

Why Do Some Trace-Mineral Formulas for the Methylation Community Have So Much Zinc and Selenium?

Some widely used practitioner trace-mineral formulas, including ones popular in methylation-focused communities, supply around 30 mg of zinc and 200 mcg of selenium per serving, well above the Daily Values of 11 mg and 55 mcg. Higher doses can make sense under a practitioner’s direction for a specific purpose. For daily foundational use alongside other products, though, they compress the margin to the Tolerable Upper Intake Levels (Upper Limits): 40 mg for zinc (IOM, 2001) and 400 mcg for selenium (IOM, 2000), both from all sources.

In NHANES data, about 3% of US adults (and 24% of children aged 2–18, whose Upper Limits are lower) already had total zinc intakes above their Upper Limit (Fulgoni et al., 2011), and high zinc intake can lower copper status over time (Fischer et al., 1984; IOM, 2001). Methylation-minded people often take several products, which makes totals easy to lose track of.

Trace Ionics™ takes the moderate approach: 9 mg zinc and 45 mcg selenium (about 82% DV each), copper at 12:1, and every nutrient that has an Upper Limit at or below 23% of it. It’s designed for foundation use; anyone on a practitioner-directed protocol should follow that guidance.

The Multivitamin Added on Top

While a multivitamin is a sensible base, mineral content varies widely from product to product. Some omit iodine, selenium or copper, some include iron, and many also contain folate that can duplicate what you already take. Check your multi’s Supplement Facts panel against your totals. For people who want a dependable mineral layer, that variability is the problem. Trace Ionics is designed to sit alongside a multivitamin (iron-free, calcium-free and moderately dosed), so its amounts are known and easy to total.

Single-Mineral Bottles, One at a Time

While buying magnesium, zinc and selenium separately feels targeted, single-mineral bottles supply one mineral at a time, so pairings like zinc and copper are left for you to manage, and doses are chosen per bottle rather than per total. For careful stackers, that is how intake can drift toward Upper Limits unnoticed. Trace Ionics delivers one balanced cofactor design, with ratios set together and every nutrient that has an Upper Limit kept well below it.

The missing piece was never a bigger dose. It was a mineral layer designed around the products you already take.

How Does Trace Ionics Fit With My Triquetra B Vitamins?

Trace Ionics™ by Triquetra Health is the mineral cofactor layer designed to sit alongside L-Methylfolate and other Triquetra products, for customers who want a more complete foundation without doubling up on zinc or selenium.

Think of enzymes as locks and cofactors as the keys that let them turn. Your Triquetra B-vitamin products supply one set of keys. Minerals are a different set, and many enzymes need them to do their jobs (IOM, 1997, 2000, 2001). Trace Ionics doesn’t change how your methylfolate works; it adds the mineral keys a vitamin product isn’t designed to carry.

The Three Cofactor Sets

Immune. Zinc (9 mg) supports normal immune-cell development and signaling; selenium (45 mcg) is built into protective glutathione peroxidase enzymes; copper (741 mcg) supports normal immune-cell function.*

Thyroid. Iodine (123 mcg) is an essential component of thyroid hormones, and selenium supports the enzymes that convert them to their active form (Schomburg, 2012; Zimmermann & Köhrle, 2002). Together, these minerals help Trace Ionics support normal immune and thyroid function.*

Energy. Magnesium (78 mg), copper and manganese are cofactors involved in normal energy metabolism.*

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Molybdenum, Briefly

Molybdenum is part of a cofactor called molybdopterin, which enzymes such as sulfite oxidase need to handle sulfur-containing amino acids from protein (IOM, 2001). For people interested in sulfur-amino-acid metabolism, it’s a natural part of the conversation alongside B vitamins. Trace Ionics provides 37 mcg (82% DV, about 2% of the Upper Limit) rather than the 200–250 mcg found in some higher-dose formulas.

Molybdenum supports normal sulfur-amino-acid metabolism.*

Chromium plays a role in how the body uses carbohydrates, fats and protein.*

Why Do Zinc and Copper Come Together?

Zinc and copper arrive together (12:1 zinc-to-copper, iron-free) because long-term zinc without copper can lower copper status (Fischer et al., 1984; IOM, 2001; Schoofs et al., 2024). The zinc Upper Limit was set largely to protect copper status (IOM, 2001). There’s no calcium, folate or B vitamins, so nothing duplicates your existing Triquetra products. Fulvic and humic acid extracts derived from prehistoric deep-earth deposits complete the formula; no absorption claim is made for them. That’s real numbers in a natural-mineral category, sized for a routine that already has other products in it.

See Your Combined Totals

The Triquetra stack chart lists every Triquetra product’s nutrient amounts, your combined total, the RDA or Adequate Intake (AI), the Upper Limit and your percentage of that limit.

 

Infographic showing how Trace Ionics minerals fit with Triquetra B-vitamin products: zinc, selenium and copper for normal immune function; iodine and selenium for normal thyroid function; and magnesium, copper and manganese for normal energy metabolism.


What Changes When You Add the Mineral Cofactor Layer?

Most people with adequate intake won’t feel minerals the way they feel caffeine. What changes is how complete, and how understandable, your routine becomes.

A Routine That Feels More Complete

Your Triquetra routine already covers active folate and, for many customers, gut health. Trace Ionics™ adds the minerals those products aren’t designed to carry, and it helps fill common mineral gaps.* The nagging sense that something’s missing has an answer you can name.

Totals You Understand

Every amount is on the label, and those amounts are totaled across your Triquetra products. The result is mineral coverage you can read, add up and trust, instead of a worry you push to the back of your mind.

The Immune and Thyroid Foundation

Zinc, selenium, copper and iodine near 82% of the Daily Value support normal immune and thyroid function.* Life still gets busy; your mineral basics are simply covered.

One Brand, One Subscription

Two capsules with breakfast, delivered with the products you already receive. No new brand to vet, no new labels to reconcile, and the same team behind the products you already trust.

What Is the Evidence Behind Trace Ionics?

Trace Ionics is built on National Academies reference science and NHANES gap data showing about 45% of Americans fall below the magnesium requirement. Trace Ionics contributes 78 mg of magnesium (19% DV) toward that gap; food remains the main source.

Trace Ionics as a complete formula has not been studied in a clinical trial; our claims describe what each mineral is established to support at the amounts provided. No study has tested Trace Ionics together with L-Methylfolate, so we don’t claim the two work better together, only that Trace Ionics was designed to sit alongside it.

The numbers are real. In nationally representative NHANES data (2003–2006), about 45% of the US population aged 2 and older had total magnesium intake below the Estimated Average Requirement, even counting supplements. About 3% of adults (and 24% of children aged 2–18) had total zinc intakes above their age-specific Upper Limit (Fulgoni et al., 2011). About 15% of US adults fell below the zinc requirement from food alone (Reider et al., 2020).

The functions and ceilings are established. The National Academies’ Dietary Reference Intakes define each mineral’s role, requirement and Upper Limit (IOM, 1997, 2000, 2001). The zinc Upper Limit was set largely to protect copper status, based in part on a controlled human trial in which 50 mg of zinc daily for six weeks lowered a marker of copper status (Fischer et al., 1984).

Quality. Trace Ionics™ is manufactured under current Good Manufacturing Practice standards for dietary supplements (21 CFR Part 111; U.S. Food and Drug Administration, n.d.), and every mineral amount is on the Supplement Facts panel.

Which Triquetra Product Does What?

 

Table showing the role of four Triquetra products: L-Methylfolate provides active folate, Flora Biome is the digestive-wellness product, Flora Fulvic is a 550 mg fulvic and humic acid complex, and Trace Ionics provides quantified minerals as the mineral cofactor layer.


What’s the Difference Between Flora Fulvic and Trace Ionics?

Flora Fulvic and Trace Ionics are both Triquetra Health products built around minerals, but they’re designed for different jobs. Flora Fulvic is humate-forward: its centerpiece is a 550 mg fulvic and humic acid complex for people who want a fulvic-centered product. Trace Ionics is quantity-forward: twelve label-quantified minerals, with zinc, selenium and iodine at about 82% of the Daily Value, 78 mg magnesium, and smaller amounts of fulvic and humic acid extracts (100 mg and 20 mg) derived from prehistoric deep-earth deposits. Choose TTrace Ionics™ if you want a defined mineral cofactor layer you can total on the Triquetra stack chart; choose Flora Fulvic if fulvic acid itself is your priority. Neither product’s fulvic content is claimed to improve mineral absorption.

How Do I Choose a Mineral Layer for an Existing Triquetra Routine?

For fitting with L-Methylfolate and other Triquetra products:

✓ Optimal fit: Trace Ionics, designed to sit alongside them, with combined totals on the Triquetra stack chart

○ Alternative: A separately sourced magnesium glycinate, which covers one gap; totals are yours to track

✗ Poor fit: A generic multivitamin added on top, which may duplicate the folate you already take and may add iron

For avoiding doubled-up zinc and selenium:

✓ Optimal fit: Trace Ionics, with 9 mg zinc and 45 mcg selenium, and every nutrient that has an Upper Limit at or below 23% of it

○ Alternative: A practitioner-directed higher-dose protocol, appropriate when a clinician sets it

✗ Poor fit: Daily foundation use of higher-dose formulas (around 30 mg zinc and 200 mcg selenium) on top of other products

For balance:

✓ Optimal fit: Trace Ionics, with 12:1 zinc-to-copper, iron-free

✗ Poor fit: Zinc-only products used long term

For a fulvic-centered routine:

✓ Optimal fit: Flora Fulvic, a humate-forward design (550 mg fulvic and humic acid complex)

○ Alternative: Trace Ionics, with smaller amounts of fulvic and humic acid extracts plus quantified minerals

For simplicity:

✓ Optimal fit: The Foundation Bundle on one subscription, with two capsules of Trace Ionics alongside L-Methylfolate

Quick Answers Before You Add Trace Ionics

Can I Take Trace Ionics With Triquetra L-Methylfolate?

Yes. Trace Ionics™ was designed to sit alongside L-Methylfolate and other Triquetra products. It provides twelve label-quantified minerals, including 9 mg zinc, 45 mcg selenium, 123 mcg iodine, 741 mcg copper and 37 mcg molybdenum at about 82% of the Daily Value, plus 78 mg magnesium. It contains no folate or other B vitamins, iron or calcium, so it doesn’t duplicate the folate in L-Methylfolate. Every nutrient that has an Upper Limit stays at or below 23% of it at label dose, and the Triquetra stack chart shows combined totals for your routine against the RDA or AI and the Upper Limit. You can take both in the morning with breakfast. If you take thyroid medication, tetracycline or quinolone antibiotics, or bisphosphonates, follow the timing guidance below and check with your healthcare provider. Trace Ionics is not formulated for use during pregnancy or nursing.

Can I Take Trace Ionics While Pregnant or Trying to Conceive?

Trace Ionics isn’t formulated for pregnancy or nursing, and anyone pregnant, nursing or trying to conceive should talk with their healthcare provider before using it. There are two reasons. Iodine needs rise during pregnancy and lactation (RDAs of 220 and 290 mcg), and Trace Ionics’ 123 mcg is designed for non-pregnant adults. Safety data for fulvic and humic acids in pregnancy and lactation are also limited. A prenatal formulated for those life stages, chosen with your provider, is the appropriate choice during that time. Trace Ionics is designed for non-pregnant adults who want a mineral cofactor layer alongside their other products.

When Should I Take Trace Ionics in My Triquetra Routine?

Take 2 capsules once daily with a meal; breakfast works well alongside your other Triquetra products. Take Trace Ionics at least 4 hours apart from thyroid medication. Take tetracycline or quinolone antibiotics at least 2 hours before or 4–6 hours after Trace Ionics, and separate bisphosphonates by at least 2 hours. Follow your pharmacist’s timing for other prescription medications, and check with your healthcare provider if you take any of them. Do not exceed 2 capsules daily.

Will Trace Ionics Add to My Existing Subscription?

Yes. You can add Trace Ionics to your existing Triquetra subscription so it ships with your next delivery, or choose the Foundation Bundle, which pairs Trace Ionics with L-Methylfolate. Subscribers save 15%, and you can pause or cancel anytime.

Build a More Complete Foundation With the Brand You Already Trust

Trace Ionics by Triquetra Health is the mineral cofactor layer designed to sit alongside L-Methylfolate and other Triquetra products, for customers who want a more complete foundation without doubling up on zinc or selenium.

Trace Ionics is built on National Academies reference science and NHANES gap data showing about 45% of Americans fall below the magnesium requirement. It contributes 78 mg of magnesium (19% DV) toward that gap, from a trace mineral complex and sea salt concentrate; food remains the main source.

Learn More About the Trace Ionics™ →

Backed by our satisfaction guarantee and cGMP manufacturing.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Not formulated for use during pregnancy or nursing. Consult your healthcare provider.

For the Detail-Oriented: The Full Panel, the Chart Method and Your Product Questions

The Full Panel

 

 

Trace Ionics nutrient table per 2-capsule serving: magnesium 78 mg, zinc 9 mg, selenium 45 mcg, iodine 123 mcg, copper 741 mcg, manganese 1.8 mg, chromium 28 mcg, molybdenum 37 mcg, boron 1.6 mg, potassium 81 mg, chloride 287 mg, sodium 1.6 mg, fulvic acid extract 100 mg and humic acid extract 20 mg, with %DV and percent of adult Upper Limits.

 

 

Medication Timing and Cautions

Take Trace Ionics at least 4 hours apart from thyroid medication. Take tetracycline or quinolone antibiotics at least 2 hours before or 4–6 hours after Trace Ionics, and separate bisphosphonates by at least 2 hours. Follow your pharmacist’s timing for other prescription medications (NIH ODS, n.d.-a, n.d.-c).

Consult your healthcare provider before use if you have a thyroid or autoimmune condition, kidney or liver disease, or Wilson’s disease, or if you take potassium-sparing diuretics, ACE inhibitors or ARBs. Not formulated for use during pregnancy or nursing. Keep out of reach of children.

More Questions About Trace Ionics

Does Trace Ionics Contain Folate or B Vitamins?

No. Trace Ionics contains minerals only: twelve label-quantified minerals plus fulvic and humic acid extracts derived from prehistoric deep-earth deposits. It has no folate, no other B vitamins, no iron and no calcium, which is why it can be added to a routine that already includes L-Methylfolate or FolinicActive without duplicating them.

Can I Take Trace Ionics With Flora Fulvic?

Flora Fulvic and Trace Ionics do different jobs, and some customers are interested in both. Because Flora Fulvic’s trace minerals are not quantified on its label, the Triquetra stack chart lists it as a fulvic complex and doesn’t add its minerals to your totals. The same humate cautions apply to both products, including for autoimmune conditions and during pregnancy or nursing. Please check with our customer care team or your healthcare provider before combining them.

Can I Take Trace Ionics With GLP-Activate?

Yes. Trace Ionics contains minerals only, with no folate, iron or calcium. Check combined totals across the products you take on the Triquetra stack chart before adding it, and follow the medication-timing guidance on the label.

Can I Take Trace Ionics With Creatine Reserve?

Yes. Trace Ionics contains minerals only, and its moderate doses leave room for the rest of your routine. Check combined mineral totals across the products you take before adding it.

What Does Molybdenum Do in the Body?

Molybdenum is a trace mineral the body uses as part of a cofactor called molybdopterin, which four enzymes need to function: sulfite oxidase, which handles sulfite produced when the body metabolizes sulfur-containing amino acids from protein, plus xanthine oxidase, aldehyde oxidase and mitochondrial amidoxime reducing component (IOM, 2001; NIH ODS, n.d.-b). The adult RDA is 45 mcg, and the Upper Limit is 2,000 mcg; dietary deficiency is uncommon in the US, and legumes and grains are typical sources. For people interested in sulfur-amino-acid metabolism, molybdenum is a natural part of the conversation alongside B vitamins. Trace Ionics™ provides 37 mcg molybdenum (82% DV, about 2% of the Upper Limit) in its balanced cofactor design, rather than the 200–250 mcg found in some higher-dose formulas.

Molybdenum supports normal sulfur-amino-acid metabolism.*

Chromium plays a role in how the body uses carbohydrates, fats and protein.*

How Is the Triquetra Stack Chart Calculated?

It adds the label amounts of each nutrient across Triquetra products at their stated serving sizes and compares the total with the RDA or Adequate Intake (AI) and the Upper Limit from the National Academies’ Dietary Reference Intakes. Products whose minerals aren’t quantified on the label are listed but not added to totals, and nothing is estimated. Food intake isn’t included, so talk with your healthcare provider about your full intake.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

You’ve Built the Foundation. This Is the Mineral Layer.

You now know why minerals deserve their own layer, and how Trace Ionics adds it without blind mineral stacking.

Trace Ionics™ by Triquetra Health is the mineral cofactor layer designed to sit alongside L-Methylfolate and other Triquetra products, for customers who want a more complete foundation without doubling up on zinc or selenium.

Who Is Trace Ionics Designed For?

Trace Ionics is designed for Triquetra customers who:

✓ Take L-Methylfolate, FolinicActive, Flora Biome or other Triquetra products and haven’t yet added a mineral layer

✓ Want to add minerals without doubling up on zinc or selenium they may already get

✓ Prefer one brand and one subscription for their foundation

✓ Want combined totals they can see on the Triquetra stack chart

Trace Ionics may not be the right fit when:

○ You’re pregnant, nursing or trying to conceive; choose a prenatal with your provider

○ A practitioner has you on a specific mineral protocol; follow it

○ Flora Fulvic already meets your goals and you mainly want fulvic acid

○ Your diet and current multivitamin already cover your minerals comfortably

Scientific References & Citations

Sources are listed with DOI or PubMed links where available. Trace Ionics as a complete formula has not been studied in a clinical trial.

Fischer, P. W. F., Giroux, A., & L’Abbé, M. R. (1984). Effect of zinc supplementation on copper status in adult man. The American Journal of Clinical Nutrition, 40(4), 743–746. https://doi.org/10.1093/ajcn/40.4.743

Fulgoni, V. L., III, Keast, D. R., Bailey, R. L., & Dwyer, J. (2011). Foods, fortificants, and supplements: Where do Americans get their nutrients? The Journal of Nutrition, 141(10), 1847–1854. https://doi.org/10.3945/jn.111.142257

Institute of Medicine. (1997). Dietary reference intakes for calcium, phosphorus, magnesium, vitamin D, and fluoride. National Academy Press. https://doi.org/10.17226/5776

Institute of Medicine. (1998). Dietary reference intakes for thiamin, riboflavin, niacin, vitamin B6, folate, vitamin B12, pantothenic acid, biotin, and choline. National Academy Press. https://doi.org/10.17226/6015

Institute of Medicine. (2000). Dietary reference intakes for vitamin C, vitamin E, selenium, and carotenoids. National Academy Press. https://doi.org/10.17226/9810

Institute of Medicine. (2001). Dietary reference intakes for vitamin A, vitamin K, arsenic, boron, chromium, copper, iodine, iron, manganese, molybdenum, nickel, silicon, vanadium, and zinc. National Academy Press. https://doi.org/10.17226/10026

National Institutes of Health, Office of Dietary Supplements. (n.d.-a). Magnesium: Fact sheet for health professionals. U.S. Department of Health and Human Services. https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/

National Institutes of Health, Office of Dietary Supplements. (n.d.-b). Molybdenum: Fact sheet for health professionals. U.S. Department of Health and Human Services. https://ods.od.nih.gov/factsheets/Molybdenum-HealthProfessional/

National Institutes of Health, Office of Dietary Supplements. (n.d.-c). Zinc: Fact sheet for health professionals. U.S. Department of Health and Human Services. https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/

Reider, C. A., Chung, R.-Y., Devarshi, P. P., Grant, R. W., & Hazels Mitmesser, S. (2020). Inadequacy of immune health nutrients: Intakes in US adults, the 2005–2016 NHANES. Nutrients, 12(6), Article 1735. https://doi.org/10.3390/nu12061735

Schomburg, L. (2012). Selenium, selenoproteins and the thyroid gland: Interactions in health and disease. Nature Reviews Endocrinology, 8(3), 160–171. https://doi.org/10.1038/nrendo.2011.174

Schoofs, H., Schmit, J., & Rink, L. (2024). Zinc toxicity: Understanding the limits. Molecules, 29(13), Article 3130. https://doi.org/10.3390/molecules29133130

U.S. Food and Drug Administration. (n.d.). Current good manufacturing practice in manufacturing, packaging, labeling, or holding operations for dietary supplements (21 C.F.R. Part 111). https://www.ecfr.gov/current/title-21/chapter-I/subchapter-B/part-111

Zimmermann, M. B., & Köhrle, J. (2002). The impact of iron and selenium deficiencies on iodine and thyroid metabolism: Biochemistry and relevance to public health. Thyroid, 12(10), 867–878. https://doi.org/10.1089/105072502761016494

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary. Not formulated for use during pregnancy or nursing. Consult your healthcare provider before starting any new supplement, especially if you have a medical condition or take medications.