Iodine Plus-2 Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Iodine Plus-2 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
Iodine Plus-2 is a dietary supplement by Natural Living with 4 active ingredients. Its ingredients are commonly taken for thyroid health support, antioxidant support, immune support.Based on those ingredients, 347 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Selenium, Vitamin B2, Iodine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Iodine Plus-2 by Natural Living
Ask about any prescription or over-the-counter medication and we check it for interactions with Iodine Plus-2 by Natural Living — 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 Iodine Plus-2 by Natural Living
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
Full disclosure
Iodine Plus-2 contains 4 active ingredients: iodine and iodide (two forms of the same mineral, listed separately here), selenium, and vitamin B2 (riboflavin). The iodine and iodide support thyroid function and help prevent iodine deficiency; they're also used to protect the thyroid after radiation exposure.
Selenium supports immune and thyroid health. Vitamin B2 is a B vitamin involved in energy metabolism.
The product also contains inactive ingredients—dicalcium phosphate, magnesium stearate, microcrystalline cellulose, stearic acid, cellulose, and silicon dioxide—which are fillers and binders that hold the tablet together.
Does it work?
Strong evidence
Iodine is likely effective for preventing and treating iodine deficiency and protecting the thyroid after radiation exposure. It's possibly effective for oral mucositis (mouth sores) and periodontitis (gum disease).
Selenium is likely effective for selenium deficiency and possibly effective for Kashin-Beck disease (a joint disease), pre-eclampsia in pregnancy, and autoimmune thyroiditis; research suggests it's ineffective for dyslipidemia (abnormal blood fats). We don't hold effectiveness data for vitamin B2 in this product's context.
How safe is it?
Well-documented data
Iodine is well tolerated in normal dietary amounts, but high doses can cause thyroid problems, goiter, nausea, abdominal upset, metallic taste, and rarely serious allergic reactions. Selenium is generally well tolerated up to 400 mcg daily, but excess can cause hair loss, nail changes, fatigue, nausea, and skin rashes; very high doses may damage the liver and other organs.
Vitamin B2 is very safe; excess is cleared in the urine, though high doses can cause nausea and bright yellow urine. During pregnancy, adequate iodine is important, but use only the amount your doctor advises and avoid high-dose products; the same applies to selenium and vitamin B2—normal amounts appear acceptable during breastfeeding, but discuss higher doses with your healthcare provider first.
Meds to double-check
Moderate interaction found
Before taking Iodine Plus-2, double-check with your doctor or pharmacist if you take lithium, antithyroid medications, or amiodarone (all Moderate severity). Also flag blood thinners or antiplatelet drugs, immunosuppressants, barbiturate sedatives, warfarin, tetracycline antibiotics, or oral contraceptives.
No interactions are documented for the other ingredient we could check—ask your pharmacist to run your full medication list through the tool on this page.
The bottom line
Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
Iodine Plus-2 may be right for you if you need iodine or selenium supplementation and don't take lithium, antithyroid drugs, amiodarone, blood thinners, immunosuppressants, barbiturates, warfarin, or tetracycline antibiotics. If you're pregnant or breastfeeding, talk with your doctor or pharmacist before starting—the dose matters.
Run your exact medications through the checker on this page, then discuss the results with your own healthcare provider before you begin.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 4 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jun 25, 2012.
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 Iodine Plus-2, straight from the product label.
| Brand | Natural Living |
|---|---|
| Net contents | 60 Tablet(s) |
| Market status | On market |
| Date entered into DSLD | Jun 25, 2012 |
| DSLD ID | 10007 |
| Product type | Other Combinations |
| Supplement form | Tablet Or Pill |
| Dietary claims / uses | All Other |
| 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 Iodine Plus-2 by Natural Living, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Iodine | 5 mg | -- |
| Selenium | 15 mcg | 21% |
| Vitamin B2 | 15 mg | 882% |
| Total Iodide/Iodine | 12.5 mg | 8333% |
| Iodide | 7.5 mg | -- |
Other ingredients: Dicalcium Phosphate, Magnesium Stearate, Microcrystalline Cellulose, Stearic Acid, Cellulose, Silicon Dioxide
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
Suggested Use: Take (1) tablet daily as a dietary supplement or as otherwise directed by your healthcare professional. Do not exceed 12 tablets per day.
Precautions
KEEP OUT OF REACH OF CHILDREN.
Sealed with an imprinted safety seal for your protection.
Storage
Store in a cool, dry area.
Formulation
Niacin-Free
FDA Statement of Identity
Dietary Supplement
General Statements
PLEASE READ ALL LABEL INFORMATION AND WARNINGS
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Iodine Plus-2 by Natural Living 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 Iodine Plus-2 by Natural Living
These are the 4 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Tablet(s) Dosage formTablet Or Pill Servings per container60 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.
Selenium
Interacts with321 drugs
Selenium is an essential trace mineral your body needs in small amounts for thyroid function, antioxidant defense, and immune health. Most people who...
Selenium monograph & interactionsVitamin B2
Interacts with20 drugs
Riboflavin (vitamin B2) is an essential nutrient your body needs to turn food into energy and to keep skin, eyes, and nerves healthy. It is generally...
Vitamin B2 monograph & interactionsOther (inactive) ingredients: Dicalcium Phosphate, Magnesium Stearate, Microcrystalline Cellulose, Stearic Acid, Cellulose, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.
Iodine Plus-2 by Natural Living Drug Interactions
HelloPharmacist Interaction Report
Iodine Plus-2 by Natural Living does interact with medications, mainly through its iodine and selenium content.
The most serious concern is a Moderate-severity interaction: iodine combined with lithium might reduce thyroid function additively, since lithium already inhibits the thyroid. Case reports suggest this effect occurs in otherwise healthy adults, so thyroid function needs monitoring.
Read the full breakdown — every affected drug type, severity by severity
Iodine also has Moderate interactions with antithyroid drugs (which it may interfere with, causing either high or low thyroid hormone depending on your history) and amiodarone, a heart rhythm medication that's already high in iodine—taking both together risks excessively high iodine levels and thyroid damage.
Selenium in this product carries Moderate interactions with blood thinners and antiplatelet drugs (it may increase bleeding), immunosuppressants (it might reduce their effectiveness), barbiturate sedatives (it may prolong their effects), and warfarin (it may interfere with its blood-thinning action). Selenium also has Minor interactions with oral contraceptives and niacin.
Vitamin B2 has a Moderate interaction with tetracycline antibiotics, though this effect hasn't been confirmed in humans.
Altogether, these interactions span 347 individual medications. Check your exact prescriptions with the search tool on this page before starting.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Iodine Plus-2?
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 Iodine Plus-2 interact with 347 drugs. Click any drug to see the details.
3 of the 4 ingredients in Iodine Plus-2 interact with drugs. Each result below shows which ingredient is responsible. Selenium Vitamin B2 Iodine
AnagrelideAgrylin
How Anagrelide interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Anagrelide interactionAnifrolumab-fniaSaphnelo
How Anifrolumab-fnia interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Anifrolumab-fnia interactionAnisindioneMiradon
How Anisindione interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Anisindione interactionAntithrombin IiiThrombate III
How Antithrombin Iii interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Antithrombin Iii interactionAntithymocyte GlobulinThymoglobulin
How Antithymocyte Globulin interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Antithymocyte Globulin interactionApixabanEliquis
How Apixaban interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Apixaban interactionAprobarbital, Butabarbital, PhenobarbitalTriple Barbital
How Aprobarbital, Butabarbital, Phenobarbital interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumBarbiturates Moderate
Interaction Summary
Theoretically, selenium might prolong the sedating effects of barbiturates.
Read the full Selenium + Aprobarbital, Butabarbital, Phenobarbital interactionArgatrobanArgatroban
How Argatroban interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Argatroban interactionAspirinAngettes 75, ASA, Asaphen, Aspirin, Caprin, Cartia +8 more
How Aspirin interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin interactionAspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #3
How Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide interactionAspirin, ButalbitalAxotal
How Aspirin, Butalbital interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs, Barbiturates Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Butalbital interactionAspirin, Butalbital, CaffeineFiorinal
How Aspirin, Butalbital, Caffeine interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Butalbital, Caffeine interactionAspirin, Butalbital, Caffeine, Codeine PhosphateFiorinal w/ Codeine
How Aspirin, Butalbital, Caffeine, Codeine Phosphate interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Butalbital, Caffeine, Codeine Phosphate interactionAspirin, Butalbital, Caffeine, PhenacetinMarnal
How Aspirin, Butalbital, Caffeine, Phenacetin interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Butalbital, Caffeine, Phenacetin interactionAspirin, CaffeineAnacin
How Aspirin, Caffeine interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Caffeine interactionAspirin, Caffeine, Codeine PhosphateAnacin w/ Codeine
How Aspirin, Caffeine, Codeine Phosphate interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Caffeine, Codeine Phosphate interactionAspirin, Caffeine, Dihydrocodeine BitartrateSynalgos DC
How Aspirin, Caffeine, Dihydrocodeine Bitartrate interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Caffeine, Dihydrocodeine Bitartrate interactionAspirin, Caffeine, Dover's PwdAcedoval, Dovacet
How Aspirin, Caffeine, Dover's Pwd interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Caffeine, Dover's Pwd interactionAspirin, Caffeine, HydrocodoneDamason-P
How Aspirin, Caffeine, Hydrocodone interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Caffeine, Hydrocodone interactionAspirin, Caffeine, Isobutylallylbarbituric Acid, PhenacetinLanorinal
How Aspirin, Caffeine, Isobutylallylbarbituric Acid, Phenacetin interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Caffeine, Isobutylallylbarbituric Acid, Phenacetin interactionAspirin, Caffeine, OrphenadrineInvagesic, Invagesic Forte, Norgesic, Norgesic Forte, Orphengesic, Orphengesic Forte
How Aspirin, Caffeine, Orphenadrine interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Caffeine, Orphenadrine interactionAspirin, Caffeine, Phenacetin, PropoxypheneMargesic Comp. 65
How Aspirin, Caffeine, Phenacetin, Propoxyphene interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Caffeine, Phenacetin, Propoxyphene interactionAspirin, Calcium Carbonate, Magnesium Carbonate, Magnesium OxideBufferin
How Aspirin, Calcium Carbonate, Magnesium Carbonate, Magnesium Oxide interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Calcium Carbonate, Magnesium Carbonate, Magnesium Oxide interactionAspirin, CarisoprodolSoma Compound
How Aspirin, Carisoprodol interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Carisoprodol interactionAspirin, Carisoprodol, Codeine PhosphateSoma Compound w/ Codeine
How Aspirin, Carisoprodol, Codeine Phosphate interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Carisoprodol, Codeine Phosphate interactionAspirin, Chlorpheniramine, PhenylpropanolamineAlka-Seltzer Plus Cold
How Aspirin, Chlorpheniramine, Phenylpropanolamine interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Chlorpheniramine, Phenylpropanolamine interactionAspirin, Citric Acid, Sodium BicarbonateAlka-Seltzer Pain Reliever and Antacid
How Aspirin, Citric Acid, Sodium Bicarbonate interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Citric Acid, Sodium Bicarbonate interactionAspirin, Codeine PhosphateAspirin w/ Codeine
How Aspirin, Codeine Phosphate interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Codeine Phosphate interactionAspirin, Codeine Phosphate, MethocarbamolRobaxisal C
How Aspirin, Codeine Phosphate, Methocarbamol interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Codeine Phosphate, Methocarbamol interactionAspirin, Codeine Phosphate, PhenobarbitalPhenaphen
How Aspirin, Codeine Phosphate, Phenobarbital interacts with Iodine Plus-2 — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs, Barbiturates Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aspirin, Codeine Phosphate, Phenobarbital interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Iodine Plus-2 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.
Selenium
Anticoagulant/Antiplatelet Drugs
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Clinical research suggests that taking selenium 10 mcg/kg/day can increase bleeding times by increasing prostacyclin production, which inhibits platelet activity. Other clinical research suggests that taking selenium 75 mcg daily, in combination with ascorbic acid 600 mg, alpha-tocopherol 300 mg, and beta-carotene 27 mg, reduces platelet aggregation.
Barbiturates
Theoretically, selenium might prolong the sedating effects of barbiturates.
Laboratory research suggests that selenium can inhibit the hepatic metabolism of barbiturates. Selenium seems to prolong the sedative effect of pentobarbital in animal models.
Immunosuppressants
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
In vitro research and preliminary clinical evidence suggests that selenium may stimulate the immune system.
Warfarin (Coumadin)
Theoretically, selenium might interfere with warfarin activity.
Animal research suggests that selenium can increase warfarin activity. Selenium might interact with warfarin by displacing it from albumin binding sites, reducing its metabolism in the liver, or by decreasing production of vitamin K-dependent clotting factors. Selenium can also prolong bleeding times in humans by increasing prostacyclin production, which inhibits platelet activity.
Contraceptive Drugs
Contraceptive drugs might increase levels of selenium, although the clinical significance of this effect is unclear.
Some research suggests that oral contraceptives increase serum selenium levels in women taking oral contraceptives; however, other research shows no change in selenium levels. It is suggested that an increase could be due to increased carrier proteins, indicating a redistribution of selenium rather than a change in total body selenium.
Niacin
Selenium might reduce the beneficial effects of niacin on high-density lipoprotein (HDL) levels.
A combination of niacin and simvastatin (Zocor) effectively raises HDL cholesterol levels in patients with coronary disease and low HDL levels. Clinical research shows that taking a combination of antioxidants (vitamin C, vitamin E, beta-carotene, and selenium) along with niacin and simvastatin (Zocor) attenuates this rise in HDL, specifically the HDL-2 and apolipoprotein A1 fractions, by more than 50% in patients with coronary disease. It is not known whether this adverse effect is due to a single antioxidant such as selenium, or to the combination. It also is not known whether it will occur in other patient populations.
Vitamin B2
Tetracycline Antibiotics
Theoretically, taking riboflavin with tetracycline antibiotics may decrease the potency of these antibiotics.
In vitro research suggests that riboflavin may inhibit the potency of tetracycline antibiotics. It is not clear if this effect is clinically significant, as this interaction has not been reported in humans.
Iodine
Amiodarone (Cordarone)
Combining iodine with amiodarone might cause excessively high iodine levels.
Amiodarone contains 37.3% iodine and can increase iodine levels. Concomitant use with iodine might increase the risk of having excessive iodine levels and adversely affecting thyroid function. Monitor thyroid function.
Antithyroid Drugs
Iodine might alter the effects of antithyroid drugs.
Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking iodine while using antithyroid drugs could alter the effects of the antithyroid drugs.
Lithium
Combining iodine with lithium might have additive hypothyroid effects.
Lithium can inhibit thyroid function. Several case reports suggest that concomitant use of lithium and potassium iodide can reduce thyroid function in otherwise healthy adults. Monitor thyroid function.
Brand information
Manufacturer and brand details for Iodine Plus-2, from the product label.
Natural Living
See all Natural Living products- Name
- Natural Living, Inc.
- City
- Las Vegas
- State
- Nevada
- Phone Number
- 877-303-7876
- Web Address
- www.IodinePlus.com
Iodine Plus-2 by Natural Living: Common Questions
Does Iodine Plus-2 by Natural Living interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
What is iodine for?
Is this safe to take every day?
Can I take this while pregnant?
What side effects might I notice?
What does selenium do in this product?
Why is vitamin B2 included?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Iodine Plus-2 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 Iodine Plus-2’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Selenium
Interacts with 321 drugsSelenium is an essential trace mineral your body needs in small amounts for thyroid function, antioxidant defense, and immune health. Most people who eat a varied diet get enough, and supple...
Read the full Selenium monograph → Herb & supplement monographRiboflavin
Interacts with 20 drugsRiboflavin (vitamin B2) is an essential nutrient your body needs to turn food into energy and to keep skin, eyes, and nerves healthy. It is generally very safe at typical doses, and the stro...
Read the full Riboflavin monograph → Herb & supplement monographIodine
Interacts with 7 drugsIodine is an essential mineral your body needs to make thyroid hormones, and most people get enough from iodized salt, dairy, and seafood. Supplements help when you are truly deficient, but...
Read the full Iodine monograph →Sources & How We Checked
Iodine Plus-2'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 67 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.
Iodine 26 references
- McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
- Goodman GA, Rall TW, Nies AS, Taylor P. The Pharmacological Basis of Therapeutics, 9th ed.
- Ghent WR, Eskin BA, Low DA, Hill LP. Iodine replacement in fibrocystic disease of the breast. Can J Surg 1993;36:453-60.
- Potassium iodide for nuclear exposure. Pharmacist's Letter/Prescriber's Letter 2001;17(12):171214.
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
- Cabezas C, Bustamante B, Holgado W, Begue RE. Treatment of cutaneous sporotrichosis with one daily dose of potassium iodide. Pediatr Infect Dis J 1996;15:352-4. PubMed
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