Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Potassium Iodide Ingredients & Drug Interactions

by Lidtke

Potassium Iodide label
See full label image
Capsule Category: Mineral
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Potassium Iodide 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

The interaction bottom line Most serious interaction: Moderate

Potassium Iodide is a dietary supplement by Lidtke with 1 active ingredient. Its ingredients are commonly taken for preventing or treating low potassium (hypokalemia), supporting healthy blood pressure, muscle cramps.Based on those ingredients, 62 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Potassium Iodide. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Potassium Iodide by Lidtke

Ask about any prescription or over-the-counter medication and we check it for interactions with Potassium Iodide by Lidtke — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Potassium Iodide by Lidtke

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.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Sep 3, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: potassium iodide, a source of supplemental potassium. The capsule also holds hypromellose and arrowroot flour as inactive ingredients (fillers and binders).

Does it work?

Couldn't assess
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not assessable

We hold no graded evidence for this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: promote beneficial iodide levels in thyroid gland.
  • We looked for evidence on: Thyroid function, Iodine deficiency, Hypothyroidism.
  • Our graded evidence for these ingredients doesn't cover that particular purpose.

No effectiveness ratings are on file for this product in our data. If you're considering it to support a specific health need, your doctor or pharmacist can tell you what the evidence shows for that use.

The evidence, ingredient by ingredient Potassium

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Potassium from food is fine, but supplements can cause dangerously high blood levels in some people — especially those with kidney disease. The most common side effects from oral potassium are stomach upset: abdominal pain, belching, diarrhea, flatulence, nausea, and vomiting.

Rare but serious effects include irregular heartbeat, heart block, low blood pressure, and confusion — all tied to high potassium levels. For pregnancy and breastfeeding, dietary potassium is appropriate, but supplements should only be used under medical guidance.

Talk with your doctor or pharmacist before taking this while pregnant or breastfeeding.

Side effects, ingredient by ingredient Potassium

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Potassium.
  • The most serious interaction on file is rated Moderate.
  • For scale: 62 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Check before starting if you take potassium-sparing diuretics (water pills that hold onto potassium), ACE inhibitors, or ARBs (blood pressure drugs). All three carry a Moderate risk of high potassium levels when paired with this supplement.

Your own doctor or pharmacist can review your specific medications and tell you whether it's safe to combine.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This supplement is a potassium source that calls for caution, particularly if you have kidney disease or take blood pressure or diuretic medications. The main risk is potassium building up to dangerous levels in your blood.

Before you start, check your exact medications with your doctor or pharmacist to make sure it's safe for you.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Jul 18, 2023.

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

At a glance

General information

Key facts about Potassium Iodide, straight from the product label.

Brand Lidtke
Barcode (UPC) 630610006170
Net contents 90 Vegan Capsule(s)
Market status On market
Date entered into DSLD Jul 18, 2023
DSLD ID 292298
Product type Mineral
Supplement form Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
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 Potassium Iodide by Lidtke, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
90
UPC/BARCODE
630610006170
IngredientAmount% DV
Potassium Iodide32.5 mg--

Other ingredients: Hypromellose, Arrowroot Flour

Tap any ingredient to jump to its full detail below.

Label statements
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.
General Statements

Thank you for choosing Potassium Iodide by LIDTKE. We sincerely wish the best of health for your and your family. All profits go to the Lidtke Small Animal Foundation.

Formula

Potassium Iodide may be used to promote beneficial levels of Iodide in the thyroid gland. Iodide is readily taken up by the thyroid and may assist the body's detoxification process. LIDTKE takes pride in providing the very finest nutrients. All LIDTKE products are identity and purity validated in an FDA regulated facility. LIDTKE stands behind each product and guarantees customer satisfaction.

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.

Precautions

Warning: Keep out of reach of children.

If you are pregnant, lactating, taking any medications or have a medical condition, consult a health professional.

Discontinue use if adverse reactions occur. Do not use if seal is damaged or missing.

Adverse events may be reported above.

Storage

Keep closed in a cool, dry place.

Brand IP Statement(s)

LIDTKE Superb Quality Since 1994 Purest on the Planet

Formulation

Radiation safety

No added gluten, yeast, wheat, corn, soy, dairy, eggs, peanuts, common allergens, artificial color or flavor, or preservatives. Non-GMO.

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions (adults): Take one (1) capsule or as directed by your health professional. Check with your health professional when considering long term use.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Potassium Iodide by Lidtke label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Potassium Iodide label

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)
What’s inside

The Ingredients in Potassium Iodide by Lidtke

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container90 Amounts shown are per serving.

Potassium Iodide

Interacts with
62 drugs
32.5 mg per serving

Potassium is an essential mineral your body needs for nerve signals, muscle function, and a steady heartbeat, and most people get enough from a balanc...

Potassium Iodide monograph & interactions

Other (inactive) ingredients: Hypromellose, Arrowroot Flour. These complete the product’s ingredient list but are not active constituents.

Interaction report

Potassium Iodide by Lidtke Drug Interactions

Want to check YOUR meds against Potassium Iodide?

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 checker
62Drugs
62 Moderate

Ingredients driving the most interactions

Potassium Iodide 62

Individual Drug Interactions

The ingredients in Potassium Iodide interact with 62 drugs. Click any drug to see the details.

1 of the 1 ingredient in Potassium Iodide interact with drugs. Each result below shows which ingredient is responsible. Potassium Iodide

Each ingredient & the kinds of drugs it affects

For each ingredient in Potassium Iodide with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Potassium Iodide3 drug types · 62 drugs

Ace Inhibitors (Aceis)

Using ACEIs with high doses of potassium increases the risk of hyperkalemia.
ACEIs block the actions of the renin-angiotensin-aldosterone system and reduce potassium excretion. Concomitant use of these drugs with potassium supplements increases the risk of hyperkalemia. However, concomitant use of these drugs with moderate dietary potassium intake (about 3775-5200 mg daily) does not increase serum potassium levels.

Likelihood Likely Evidence C
Angiotensin Receptor Blockers (Arbs)

Using ARBs with high doses of potassium increases the risk of hyperkalemia.
ARBs block the actions of the renin-angiotensin-aldosterone system and reduce potassium excretion. Concomitant use of these drugs with potassium supplements increases the risk of hyperkalemia. However, concomitant use of these drugs with moderate dietary potassium intake (about 3775-5200 mg daily) does not increase serum potassium levels.

Likelihood Likely Evidence C
Potassium-Sparing Diuretics

Concomitant use increases the risk of hyperkalemia.
Using potassium-sparing diuretics with potassium supplements increases the risk of hyperkalemia.

Likelihood Likely Evidence C
Potassium Iodide full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Potassium Iodide, from the product label.

Lidtke

See all Lidtke products
Name
Lidtke
City
Chandler
State
AZ
ZipCode
85226
Phone Number
1-800-404-8185
Web Address
www.lidtke.com
Pharmacist Counseling Corner

Potassium Iodide by Lidtke: Common Questions

Does Potassium Iodide by Lidtke interact with any medications?
Yes. Based on its ingredients, Potassium Iodide has a known interaction with 62 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Potassium Iodide contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
What's potassium iodide for?
Potassium iodide is a supplemental source of potassium, a mineral your body needs for heart rhythm, nerve signaling, and muscle function. This product is one potassium iodide capsule with no other active ingredients.
What are the common side effects?
The most common side effects are digestive: abdominal pain, belching, diarrhea, flatulence, nausea, and vomiting. These are generally mild, but if they bother you, talk to your pharmacist about it.
Can I take this if I have kidney disease?
Potassium supplements can cause dangerously high blood levels, especially in people with kidney disease, because your kidneys regulate potassium excretion. Do not take this without talking to your doctor first if you have kidney problems.
Is it safe to take during pregnancy or breastfeeding?
Dietary potassium during pregnancy and breastfeeding is fine, but supplements should only be used under medical guidance. Talk with your doctor or pharmacist before taking this while pregnant or breastfeeding to make sure it's right for you.
What happens if potassium gets too high?
Too much potassium in your blood (high potassium) can cause irregular heartbeat, heart block, low blood pressure, and confusion. That's why it's critical to check with your doctor or pharmacist before taking this, especially if you're on blood pressure or water pill medications.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Potassium Iodide is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.

Potassium Iodide label
Go deeper

The Full Monographs Behind Potassium Iodide’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Potassium

Interacts with 62 drugs

Potassium is an essential mineral your body needs for nerve signals, muscle function, and a steady heartbeat, and most people get enough from a balanced diet rich in fruits and vegetables. P...

Read the full Potassium monograph →
Sources

Sources & How We Checked

Potassium Iodide'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.

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 12 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.

Potassium 12 references
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. Gennaro A. Remington: The Science and Practice of Pharmacy. 19th ed. Lippincott: Williams & Wilkins, 1996.
  3. Whelton PK, He J, Cutler JA, et al. Effects of oral potassium on blood pressure. Meta-analysis of randomized controlled clinical trials. JAMA 1997;277:1624-32. PubMed
  4. Phillips, C. O., Kashani, A., Ko, D. K., Francis, G., and Krumholz, H. M. Adverse effects of combination angiotensin II receptor blockers plus angiotensin-converting enzyme inhibitors for left ventricular dysfunction: a quantitative review of data from ra DOI
  5. Altieri, P. I., Herrero, C., Suero, R., and Ortiz, A. Bleeding duodenal ulcer in a patient taking slow-releasing potassium tablets. Bol.Asoc.Med P.R. 1977;69(8):276.
  6. Raf, L. E. Enteric-coated potassium chloride tablets and ulcer of the small intestine. Acta Chir Scand Suppl 1967;(374):1-87.
  7. Potassium chloride oral solution [package insert]. Allentown, PA: Lehigh Valley Technologies, Inc.; 2014.
  8. Potassium chloride injection [package insert]. Lake Forest, IL: Hospira Inc.; 2009.
  9. Patel RB, Tannenbaum S, Viana-Tejedor A, et al. Serum potassium levels, cardiac arrhythmias, and mortality following non-ST-elevation myocardial infarction or unstable angina: insights from MERLIN-TIMI 36. Eur Heart J Acute Cardiovasc Care 2017 Feb;6(1):1 PubMed
  10. Malta D, Arcand J, Ravindran A, Floras V, Allard JP, Newton GE. Adequate intake of potassium does not cause hyperkalemia in hypertensive individuals taking medications that antagonize the renin angiotensin aldosterone system. Am J Clin Nutr 2016 Oct;104(4 PubMed
  11. Keskin M, Kaya A, Tatlisu MA, et al. The effect of serum potassium level on in-hospital and long-term mortality in ST elevation myocardial infarction. Int J cardiol. 2016 Oct 15;221:505-10.
  12. Stallings VA, Harrison M, Oria M; Committee to Review the Dietary Reference Intakes for Sodium and Potassium, Food and Nutrition Board, Health and Medicine Division, National Academies of Sciences, Engineering, and Medicine. Washington (DC): National Acad

See these in context on the Potassium monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team