Thyroset Ingredients & Drug Interactions
by North American Herb & Spice
What is this page for?
First and foremost: checking Thyroset against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Thyroset is a dietary supplement by North American Herb & Spice with 4 active ingredients. Its ingredients are commonly taken for mental focus and alertness, coping with stress, fatigue and sleep loss.Based on those ingredients, 393 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are wild Rosemary, Oregano, Wild, L-Tyrosine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Thyroset by North American Herb & Spice
Ask about any prescription or over-the-counter medication and we check it for interactions with Thyroset by North American Herb & Spice — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Thyroset by North American Herb & Spice
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Low disclosure
Thyroset contains 4 ingredients: L-tyrosine (an amino acid your body uses to make thyroid hormone and brain chemicals), wild, raw kelp (a seaweed source of iodine and minerals), wild rosemary (an herb), and wild oregano (a culinary herb). These active ingredients are delivered in a capsule along with pullulan, a plant-based binding agent.
The formula is built around tyrosine as its primary component to support thyroid and cognitive function.
Does it work?
Couldn't assess
L-tyrosine is rated effective for phenylketonuria (PKU), a rare genetic condition, and possibly effective for cognitive function and memory. The evidence for tyrosine in athletic performance is rated possibly ineffective.
For alcohol use disorder and dementia, we don't have enough reliable evidence to rate it. Rosemary is rated possibly effective for memory but insufficient evidence exists for other uses in this product.
Oregano's effectiveness for the conditions listed (acne, bronchitis, asthma, headache, upper respiratory infection) is rated insufficient evidence to establish. Overall, the strongest evidence is for tyrosine and cognitive or memory support, though the data remains modest.
How safe is it?
Well-documented data
L-tyrosine is generally well tolerated in healthy adults, but you should talk to a healthcare provider before regular use. The most common side effects in trials were fatigue, headache, heartburn, and nausea.
Larger doses can amplify these effects. We don't have enough safety data to recommend it without a doctor's guidance.
There isn't enough data on file to know if L-tyrosine is safe during pregnancy or breastfeeding — talk with your doctor or pharmacist for personalized advice. Wild rosemary, in food amounts, is safe; medicinal doses carry a possibly unsafe rating in pregnancy and insufficient data for breastfeeding.
Wild oregano is safe as food but rated possibly unsafe in medicinal amounts during pregnancy and lacks safety data for supplement doses while breastfeeding. Oregano may rarely cause serious allergic reactions, including anaphylaxis, in sensitive individuals.
Meds to double-check
Moderate interaction found
Before you take Thyroset, double-check with your doctor or pharmacist if you take levodopa (a Parkinson's medication), thyroid hormones, blood thinners or antiplatelet drugs (including aspirin), or diabetes medications. These carry the most serious documented interactions with ingredients in this product.
No interactions are documented for wild, raw kelp — we hold no data for it — so clarify what your other medications are with your healthcare provider.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
Thyroset may be worth considering if you're interested in cognitive or memory support and you don't take levodopa, thyroid hormones, blood thinners, or diabetes medications. If you do take any of those, or if you're pregnant, breastfeeding, or allergic to herbs in the mint family, talk with your own doctor or pharmacist before starting.
Even if your medications aren't on this list, it's smart to run the product and your full medication list through the search tool on this page first.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 3 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Sep 22, 2022.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Thyroset, straight from the product label.
| Brand | North American Herb & Spice |
|---|---|
| Barcode (UPC) | 635824000235 |
| Net contents | 90 Vegi Cap(s) |
| Market status | On market |
| Date entered into DSLD | Sep 22, 2022 |
| DSLD ID | 270176 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years) |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Thyroset by North American Herb & Spice, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Proprietary Blend | 1000 mg | -- |
| L-Tyrosine | 0 NP | -- |
| wild, raw Kelp | 0 NP | -- |
| wild Rosemary | 0 NP | -- |
| Oregano, Wild | 0 NP | -- |
Other ingredients: Pullulan
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions
Directions: Take two capsules daily.
Formula
Thyroset, a unique combination of wild kelp, herbs, and L-tyrosine, is the whole food, natural way to supplement your idonie, trace minerals, amino acids, and antioxidants. This wild, raw kelp is the highest grade possible, rich in natural iodine, sodium alginate, and trace minerals. Fortified with L-tyrosine and wild spices, Thyroset is an ideal supplement for supporting a healthy thyroid response for optimal health.
L-thyrosine-enhanced Natural, raw, wild kelp plus herbs
FDA Disclaimer Statement
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.
Formulation
Supports a healthy thyroid response
(100% GMO free) Contains no animal products
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Thyroset by North American Herb & Spice label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Thyroset by North American Herb & Spice
These are the 4 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 Capsule(s) Dosage formCapsule Servings per container45 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Proprietary Blend
- › L-Tyrosine
- › Wild, raw Kelp
- › Wild Rosemary
- › Oregano, Wild
Other (inactive) ingredients: Pullulan. These complete the product’s ingredient list but are not active constituents.
Thyroset by North American Herb & Spice Drug Interactions
HelloPharmacist Interaction Report
Thyroset by North American Herb & Spice does interact with medications through its L-tyrosine, wild rosemary, and oregano content.
The most serious documented concern is a Moderate interaction: L-tyrosine may decrease the effectiveness of levodopa (a Parkinson's medication) by competing for absorption in the small intestine. If you take levodopa, separate doses of this product and your medication by at least 2 hours.
Read the full breakdown — every affected drug type, severity by severity
L-tyrosine may also have additive effects with thyroid hormone medications, potentially raising thyroid hormone levels. Rosemary and oregano both carry Moderate risks with blood thinners (anticoagulants and antiplatelet drugs) and diabetes medications, as both herbs may increase bleeding risk and lower blood sugar.
Additionally, rosemary may amplify the effects of aspirin and related salicylates. Rosemary can also theoretically decrease the effectiveness of certain medications metabolized by the CYP1A2 enzyme (a Minor interaction).
We could not check wild, raw kelp — we hold no safety data for it. Altogether, these interactions span 393 individual medications.
Before you start Thyroset, run your exact medications through the search tool on this page or check with your own doctor or pharmacist.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Thyroset?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Thyroset interact with 393 drugs. Click any drug to see the details.
3 of the 4 ingredients in Thyroset interact with drugs. Each result below shows which ingredient is responsible. wild Rosemary Oregano, Wild L-Tyrosine
Estradiol, ProgesteroneBijuvanda
How Estradiol, Progesterone interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Estradiol, Progesterone interactionEstrogenEstrogen
How Estrogen interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Estrogen interactionEthiny Estradiol, LevonorgestrelLogynon, Microgynon 30 ED
How Ethiny Estradiol, Levonorgestrel interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethiny Estradiol, Levonorgestrel interactionEthinyl EstradiolEstinyl
How Ethinyl Estradiol interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethinyl Estradiol interactionEthinyl Estradiol, DesogestrelApri, Cesia, Cyclessa, Gedarel, Kariva, Linessa +4 more
How Ethinyl Estradiol, Desogestrel interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethinyl Estradiol, Desogestrel interactionEthinyl Estradiol, DrospirenoneYaz
How Ethinyl Estradiol, Drospirenone interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethinyl Estradiol, Drospirenone interactionEthinyl Estradiol, Ethynodiol DiacetateDemulen 1/35, Demulen 1/50, Demulen Compack, Kelnor 1/35, Zovia, Zovia 1/35 +1 more
How Ethinyl Estradiol, Ethynodiol Diacetate interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethinyl Estradiol, Ethynodiol Diacetate interactionEthinyl Estradiol, LevonorgestrelAlesse, Alesse 21, Alesse 28, Aviane, Enpresse, Jolessa +18 more
How Ethinyl Estradiol, Levonorgestrel interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethinyl Estradiol, Levonorgestrel interactionEthinyl Estradiol, NorethindroneAranelle, Brevicon, Brevicon .5/35 21 day, Brevicon .5/35 28 day, Brevicon 1/35 21 day, Brevicon 1/35 28 day +50 more
How Ethinyl Estradiol, Norethindrone interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethinyl Estradiol, Norethindrone interactionEthinyl Estradiol, Norethindrone, Ferrous FumarateEstrostep Fe, Femcon FE, Junel Fe 1.5/30, Loestrin Fe, Loestrin Fe 1.5/30, Loestrin Fe 1/20 +3 more
How Ethinyl Estradiol, Norethindrone, Ferrous Fumarate interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethinyl Estradiol, Norethindrone, Ferrous Fumarate interactionEthinyl Estradiol, NorgestimateCilest, Mononessa, Ortho Tri-Cyclen 28, Ortho Tri-Cyclen Lo, Ortho Tri-Cylcen, Ortho-Cyclen +5 more
How Ethinyl Estradiol, Norgestimate interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethinyl Estradiol, Norgestimate interactionEthinyl Estradiol, NorgestrelCryselle, Lo/Ovral, Low-Ogestrel, Ogestrel 0.5/50, Ovral
How Ethinyl Estradiol, Norgestrel interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethinyl Estradiol, Norgestrel interactionEthinyl Estradiol, LevonogestrelLybrel
How Ethinyl Estradiol, Levonogestrel interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Ethinyl Estradiol, Levonogestrel interactionEtonogestrelImplanon
How Etonogestrel interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Etonogestrel interactionEtonogestrel, Ethinyl EstradiolNuvaRing
How Etonogestrel, Ethinyl Estradiol interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Etonogestrel, Ethinyl Estradiol interactionFenfluamineFintepla
How Fenfluamine interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Fenfluamine interactionFezolinetantVeozah
How Fezolinetant interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Fezolinetant interactionFlutamideEuflex, Eulexin
How Flutamide interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Flutamide interactionFluvoxamineLuvox
How Fluvoxamine interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Fluvoxamine interactionGrepafloxacinRaxar
How Grepafloxacin interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Grepafloxacin interactionGuaifenesin, TheophyllineBronchial, Mudrane GG-2, Quibron, Quibron-300, Theolair-Plus
How Guaifenesin, Theophylline interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Guaifenesin, Theophylline interactionHaloperidolHaldol
How Haloperidol interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Haloperidol interactionHydrochlorothiazide, PropranololInderide
How Hydrochlorothiazide, Propranolol interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Hydrochlorothiazide, Propranolol interactionImipramineTofranil, Tofranil PM
How Imipramine interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Imipramine interactionLevobupivacaineChirocaine
How Levobupivacaine interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Levobupivacaine interactionLevonorgestrel, Ethinyl EstradiolLogynon ED, Microgynon 30, Nordette, Ovranette, Quartette, Trinordiol +1 more
How Levonorgestrel, Ethinyl Estradiol interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Levonorgestrel, Ethinyl Estradiol interactionLofepramineFeprapax, Gamanil, Lomont, Tymelyt
How Lofepramine interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Lofepramine interactionMexiletineMexitil
How Mexiletine interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Mexiletine interactionMirtazapineRemeron
How Mirtazapine interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Mirtazapine interactionNaloxone, PentazocineTalwin Nx
How Naloxone, Pentazocine interacts with Thyroset — through 1 ingredient. Tap an ingredient for the detail:
Wild RosemaryCytochrome P450 1a2 (cyp1a2) Substrates Minor
Interaction Summary
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Wild Rosemary + Naloxone, Pentazocine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Thyroset with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
wild Rosemary
Anticoagulant/Antiplatelet Drugs
Theoretically, rosemary may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
In vitro and animal research suggests that rosemary inhibits platelet aggregation.
Antidiabetes Drugs
Theoretically, taking rosemary with antidiabetes drugs might increase the risk of hypoglycemia.
Animal research shows that rosemary extract can decrease blood glucose levels in diabetic models. However, research in humans is conflicting. Although rosemary powder decreased blood glucose levels in healthy adults, no change in blood glucose levels was seen in adults with type 2 diabetes, most of whom were taking antidiabetes drugs.
Aspirin
Theoretically, rosemary might have additive effects with salicylate-containing drugs such as aspirin.
Rosemary is reported to contain salicylates.
Choline Magnesium Trisalicylate (Trilisate)
Theoretically, rosemary might have additive effects with salicylate-containing drugs such as choline magnesium trisalicylate.
Rosemary is reported to contain salicylate.
Salsalate (Disalcid)
Theoretically, rosemary might have additive effects with salicylate-containing drugs such as salsalate.
Rosemary is reported to contain salicylate.
Cytochrome P450 1A2 (Cyp1A2) Substrates
Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
In vitro research shows that rosemary induces CYP1A2 enzymes. This effect has not been reported in humans.
Oregano, Wild
Anticoagulant/Antiplatelet Drugs
Theoretically, oregano might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
In vitro research shows that aristolochic acid isolated from oregano leaves has antithrombin activity. It has also been reported that oregano oil inhibits arachidonic acid-induced, and ADP-induced, platelet aggregation.
Antidiabetes Drugs
Theoretically, oregano might increase the risk for hypoglycemia when taken with antidiabetes drugs.
In vitro and animal research shows that oregano extracts might lower blood glucose levels.
L-Tyrosine
Levodopa
Theoretically, tyrosine might decrease the effectiveness of levodopa.
Tyrosine and levodopa compete for absorption in the proximal duodenum by the large neutral amino acid (LNAA) transport system. Advise patients to separate doses of tyrosine and levodopa by at least 2 hours.
Thyroid Hormone
Theoretically, tyrosine might have additive effects with thyroid hormone medications.
Tyrosine is a precursor to thyroxine and might increase levels of thyroid hormones.
Brand information
Manufacturer and brand details for Thyroset, from the product label.
North American Herb & Spice
See all North American Herb & Spice products- Name
- North American Herb & Spice
- Street Address
- 13900 W. Polo Trail Drive
- City
- Lake Forest
- State
- IL
- ZipCode
- 60045
- Phone Number
- 1-800-243-5242
- Web Address
- www.oreganol.com
Thyroset by North American Herb & Spice: Common Questions
Does Thyroset by North American Herb & Spice interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Can I take this if I'm on a thyroid medication?
What are the most common side effects?
Is it safe to take while pregnant?
Will this actually help my memory or brain function?
Can I take this with my blood thinner?
Is this safe if I have a shellfish or iodine allergy?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Thyroset is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Thyroset’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Tyrosine
Interacts with 21 drugsL-tyrosine is an amino acid your body uses to make brain chemicals like dopamine and norepinephrine. Some studies suggest it may help mental performance during short-term stress, sleep loss,...
Read the full Tyrosine monograph → Herb & supplement monographRosemary
Interacts with 372 drugsRosemary is a fragrant Mediterranean herb that is safe and flavorful in normal food amounts. Some early research suggests possible benefits for memory, mood, and hair growth, but the evidenc...
Read the full Rosemary monograph → Herb & supplement monographOregano
Interacts with 208 drugsOregano is a common Mediterranean cooking herb that is also sold as a concentrated oil or supplement, often standardized for a compound called carvacrol. While lab studies suggest it may hav...
Read the full Oregano monograph →Sources & How We Checked
Thyroset's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 36 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Tyrosine 4 references
- Meyer JS, Welch KM, Deshmukh VD, et al. Neurotransmitter precursor amino acids in the treatment of multi-infarct dementia and Alzheimer's disease. J Amer Geriat Soc 1977;25:289-98.
- DiPiro JT, Talbert RL, Yee GC, et al; eds. Pharmacotherapy: A pathophysiologic approach. 4th ed. Stamford, CT: Appleton & Lange, 1999.
- Wood DR, Reimherr FW, Wender PH. Amino acid precursors for the treatment of attention deficit disorder, residual type. Psychopharmacol Bull 1985;21:146-9.
- van Spronsen FJ, van Rijn M, Bekhof J. Phenylketonuria: tyrosine supplementation in phenylalanine-restricted diets. Am J Clin Nutr 2001;73:153-7. PubMed
Rosemary 20 references
- Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
- Foster S, Tyler VE. Tyler's Honest Herbal: A Sensible Guide to the Use of Herbs and Related Remedies. 3rd ed., Binghamton, NY: Haworth Herbal Press, 1993.
- The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Cartier LC, Lehrer A, Malo JL. Occupational asthma caused by aromatic herbs. Allergy 1996;51:647-9. DOI
- Burkhard PR, Burkhardt K, Haenggeli CA, Landis T. Plant-induced seizures: reappearance of an old problem. J Neurol 1999;246:667-70. PubMed
- Swain AR, Dutton SP, Truswell AS. Salicylates in foods. J Am Diet.Assoc 1985;85(8):950-60. DOI
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