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Dietary supplement

Potassium 99 mg Ingredients & Drug Interactions

by Nutricost

Potassium 99 mg 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 99 mg 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 99 mg is a dietary supplement by Nutricost 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. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Potassium 99 mg by Nutricost

Ask about any prescription or over-the-counter medication and we check it for interactions with Potassium 99 mg by Nutricost — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Potassium 99 mg by Nutricost

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 Jul 11, 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.

Nutricost Potassium 99 mg is a single-ingredient supplement. The active ingredient is potassium, an electrolyte your body needs for muscle and nerve function, including keeping your heart rhythm steady.

The capsule also contains rice flour, hypromellose (a binder), and magnesium stearate (a lubricant).

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

This is a single-ingredient Potassium product and its label doesn't state a use — see Potassium's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

We don't have effectiveness ratings on file for potassium supplements in the evidence we hold. If you're taking this to treat low potassium levels (hypokalemia), that's a decision you should make with your doctor, especially because potassium levels are best managed under medical supervision with blood tests.

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

In rare cases, high potassium levels can cause irregular heartbeat, low blood pressure, heart block, or confusion. In pregnancy, dietary potassium is appropriate, but only use supplements under medical guidance.

The same goes for breastfeeding—check with your doctor first. The safety data rates potassium as likely safe in pregnancy and lactation, but your individual situation matters.

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.

Before you take this, check whether you're on potassium-sparing diuretics, ACE inhibitors, or ARBs—all carry a Moderate risk of raising your potassium too high. If you're on any blood pressure or heart medication at all, run it through the interaction checker below.

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.

Potassium supplements are a real tool, but not a casual take-it-yourself one. If you're on blood pressure medication, a diuretic, or have kidney issues, this needs a doctor's thumbs-up.

Talk to your pharmacist or doctor about whether you actually need supplemental potassium and whether it's safe with your medications.

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 Apr 24, 2025.

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 99 mg, straight from the product label.

Brand Nutricost
Barcode (UPC) 810014677019
Net contents 240 Capsule(s)
Market status On market
Date entered into DSLD Apr 24, 2025
DSLD ID 334876
Product type Mineral
Supplement form Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Gluten Free
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 99 mg by Nutricost, 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
240
UPC/BARCODE
810014677019
IngredientAmount% DV
Potassium99 mg2%

Other ingredients: Rice Flour, Hypromellose, Magnesium Stearate

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.
Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take 1 capsule daily with 8-12 oz of water or as directed by your healthcare professional.

Formulation

Third party tested

Non-GMO Gluten-free

Made and quality tested in the USA with globally sourced ingredients.

Vegetarian product

Non-GMO product

Precautions

Warning: For healthy individuals 18 years and older. Keep out of reach of children.

Consult a healthcare professional prior to use if you are pregnant or nursing, taking medication, or have a medical condition.

Do not use if safety seal is broken or missing.

Storage

Notice: Store in a cool, dry place.

Formula

Potassium from potassium citrate 99 mg per serving

FDA Statement of Identity

Dietary Supplement

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.

Seals/Symbols

Nutricost Quality Guaranteed Vegetarian Product GMP Compliant Facility

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

See for yourself

Potassium 99 mg by Nutricost label

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

Potassium 99 mg 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 99 mg by Nutricost

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 container240 Amounts shown are per serving.

Potassium

Interacts with
62 drugs
99 mg per serving Form: Potassium Citrate

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 monograph & interactions

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

Interaction report

Potassium 99 mg by Nutricost Drug Interactions

Want to check YOUR meds against Potassium 99 mg?

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 62

Individual Drug Interactions

The ingredients in Potassium 99 mg interact with 62 drugs. Click any drug to see the details.

1 of the 1 ingredient in Potassium 99 mg interact with drugs. Each result below shows which ingredient is responsible. Potassium

Each ingredient & the kinds of drugs it affects

For each ingredient in Potassium 99 mg 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.

Potassium3 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 full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Potassium 99 mg, from the product label.

Nutricost

See all Nutricost products
Name
Nutricost Manufacturing
Street Address
351 E 1750 N
City
Vineyard
State
UT
ZipCode
84059
Phone Number
(866) 438-3694
Web Address
nutricost.com
Pharmacist Counseling Corner

Potassium 99 mg by Nutricost: Common Questions

Does Potassium 99 mg by Nutricost interact with any medications?
Yes. Based on its ingredients, Potassium 99 mg 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 99 mg 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 does potassium do in my body?
Potassium is an electrolyte that helps your muscles contract, your nerves fire, and your heart keep a steady rhythm. You normally get it from food like bananas, spinach, and beans—supplements are meant to fill a gap only if your doctor says you need them.
What are the most common side effects?
Stomach troubles: belching, gas, diarrhea, nausea, abdominal pain, and vomiting. These happen because potassium can irritate your gut, especially if you take it on an empty stomach.
Can I take this if I'm pregnant or breastfeeding?
Dietary potassium is fine, but supplements are a different story. The data rates potassium as likely safe in pregnancy and lactation, but you need to talk with your doctor or midwife first—they know your full picture and can tell you whether you actually need a supplement.
Why is this a problem with blood pressure medications?
Many blood pressure drugs (ACE inhibitors and ARBs) and water pills that spare potassium all work by changing how your kidneys clear potassium. Adding a supplement on top can push your blood potassium dangerously high, which can mess with your heart rhythm.
I have kidney disease—is this safe for me?
No. People with kidney disease are at higher risk for dangerously high blood potassium because their kidneys don't clear it well. Talk to your nephrologist or doctor before considering a potassium supplement.
Do I actually need a potassium supplement?
Most people get enough potassium from food. Supplements are prescribed only when blood tests show you're low (hypokalemia). If you're considering this on your own, run it past your doctor or pharmacist first.

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

Not sure if Potassium 99 mg is safe with your meds?

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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 99 mg label
Go deeper

The Full Monographs Behind Potassium 99 mg’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 99 mg'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

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