Drug & supplement interaction

Dolomite + Amiloride, Hydrochlorothiazide

Amiloride, Hydrochlorothiazide brand names: Moduretic, Amilzide, Moduret 25, Amil-Co.

Major Interaction
Medically reviewed by · Updated September 2026
The bottom line Major

Amiloride, Hydrochlorothiazide falls into 2 drug categories that Dolomite can interact with; the most serious is rated major. Taking thiazides with dolomite might increase the risk of hypercalcemia and kidney failure.

Read the full interaction report
SeverityMajor
LikelihoodProbable
Interactions2
EvidenceC
What do Severity, Likelihood & Evidence mean?
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Interaction report

Dolomite and Amiloride, Hydrochlorothiazide

These two interact in 2 distinct ways. Each one is explained separately below.

Why Are There 2 Interactions?

Dolomite interacts with whole categories of medication. Amiloride, Hydrochlorothiazide falls into 2 of those categories, so it can interact with Dolomite in 2 different ways. We’ve listed each one below — your overall risk is driven by the most serious of them (Major).

Major

THIAZIDE DIURETICS

1 of 2

Why this applies to Amiloride, Hydrochlorothiazide

Amiloride, Hydrochlorothiazide falls under THIAZIDE DIURETICS — the group Dolomite interacts with.

Taking thiazides with dolomite might increase the risk of hypercalcemia and kidney failure.
Dolomite contains calcium, and thiazides reduce calcium excretion by the kidneys. Using thiazides along with moderately large amounts of dolomite increases the risk of milk-alkali syndrome (hypercalcemia, metabolic alkalosis, kidney failure).
Severity Major Likelihood Probable Evidence C

Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports..

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the thing to know about pairing dolomite with your Moduretic (the amiloride and hydrochlorothiazide combo). The hydrochlorothiazide half of this pill actually tells your kidneys to hold onto calcium instead of flushing it out. Dolomite, meanwhile, hands your body a load of extra calcium. Put those two together in larger amounts and calcium can climb too high in your blood, a problem called hypercalcemia.

When that happens, you might feel nausea, constipation, weakness, confusion, or extreme thirst, and over time it can strain your kidneys (sometimes called milk-alkali syndrome). Because this is rated a serious interaction, I'd steer clear of dolomite here, especially since it can also carry traces of lead and other metals. Please talk with your pharmacist or doctor before adding any calcium product, and don't change your blood pressure medicine on your own.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Friedman PA, Bushinsky DA. Diuretic effects on calcium metabolism. Semin Nephrol 1999;19:551-6.
Moderate

POTASSIUM-SPARING DIURETICS

2 of 2

Amiloride, Hydrochlorothiazide also falls under POTASSIUM-SPARING DIURETICS.

Theoretically, serum magnesium levels might increase when dolomite is taken with potassium-sparing diuretics.
Potassium-sparing diuretics also have magnesium-sparing properties, which can counteract the magnesium losses associated with loop and thiazide diuretics. Dolomite contains magnesium, which may increase the risk for hypermagnesemia.
Severity Moderate Likelihood Probable Evidence D

Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports..

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the thing to know about your combo pill. The amiloride half is a potassium-sparing diuretic, and these tend to hold onto magnesium rather than flush it out (the hydrochlorothiazide part actually pushes magnesium out, so the two partly balance each other). Dolomite adds extra magnesium on top of all this. In theory, pairing the two could nudge your blood magnesium level higher than expected.

This is a theoretical concern based on how these work, not something proven in studies, so most people won't run into trouble. Still, if magnesium climbed too high, you might feel unusually tired, weak, flushed, or notice a slow or irregular heartbeat. Since dolomite can also carry heavy metals, I'd run this by your pharmacist or doctor before using it.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Ryan MP. Diuretics and potassium/magnesium depletion. Directions for treatment. Am J Med 1987;82:38-47.. PubMed
  2. Hollifield JW. Magnesium depletion, diuretics, and arrhythmias. Am J Med 1987;82:30-7.. PubMed
  3. Heidenreich O. Mode of action of conventional and potassium-sparing diuretics--aspects with relevance to Mg-sparing effects. Magnesium 1984;3:248-56..

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Dolomite Also Interacts With Other Medications

Dolomite has 55 major, 72 moderate known drug interactions in our database — the Amiloride, Hydrochlorothiazide one above is among them. If you take anything else, check it against the full list below.

Major 55 Moderate 72 No known interaction 2,703 (incl. Amiloride, Hydrochlorothiazide)
Taking anything else?

Check Another of Your Medications Against Dolomite

Covers the 2,830 medications we’ve checked against Dolomite. Pick one to open its full report.

Everything else you take

See Every Supplement That Interacts With Amiloride, Hydrochlorothiazide

This page covers Dolomite only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Amiloride, Hydrochlorothiazide page lists 236 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), American Mistletoe (major), Asarabacca (major) and Lithium (major).

By severity: 10 major · 199 moderate · 27 minor.

From our pharmacist’s overview on the Amiloride, Hydrochlorothiazide page

“The typical Moduretic (amiloride with hydrochlorothiazide) patient is managing blood pressure long term, and the supplements that crowd reaches for (herbal blood pressure aids, potassium, calcium) are exactly what fills this list. It deserves a careful read, not a skim.”

Reviewed by 2 · Jul 18, 2026

Open the Amiloride, Hydrochlorothiazide interaction page

One more smart check

Taking Dolomite as Part of a Dietary Supplement Product? Check It for Interactions

We hold 3 real supplement products containing Dolomite, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Dolomite. Your product may carry other ingredients that interact with Amiloride, Hydrochlorothiazide too, on top of Dolomite — and those would not show on this page. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Dolomite and Amiloride, Hydrochlorothiazide Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Dolomite
Top half

#678 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Amiloride, Hydrochlorothiazide
Top 25%

#358 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Supplement

About Dolomite

What is Dolomite?

Dolomite
  • Source of calcium
  • Source of magnesium
  • Bone health support
  • Antacid for heartburn
  • Mineral supplementation

Dolomite is a natural mineral that provides both calcium and magnesium. However, many health authorities advise against using it because dolomite products have been found to contain heavy metals like lead, arsenic, and mercury, and safer, better-tested calcium and magnesium supplements are widely available.

Read the full Dolomite monograph & all interactions
Medication

About Amiloride and Hydrochlorothiazide

What Is Amiloride and Hydrochlorothiazide Used For?

Brand names: Moduretic, Amilzide, Moduret 25, Amil-Co

This combination tablet is used in people with high blood pressure or congestive heart failure who develop low potassium (hypokalemia) when thiazides or similar diuretics are used alone.

It is also used when keeping potassium in the normal range is especially important, such as in people taking digitalis or those with significant heart rhythm problems. It can be used alone or added to other blood pressure medicines like methyldopa or beta blockers.

See full Amiloride and Hydrochlorothiazide drug information
Keep checking

Other Drugs & Dolomite

Browse every other medication we’ve checked against Dolomite — both the ones with a known interaction and the ones without. Select any drug for the full detail.

55Major
72Moderate
0Minor
2,702No known interaction
55 Major 72 Moderate 2,702 No interaction
Major

55 interactions

Moderate

72 interactions

Showing 60 of 72 moderate interactions — see all 72 on the Dolomite page.

No interaction 2,702 drugs checked — show the list

We also checked Dolomite against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,702 medications checked with no known interaction — see the full Dolomite list.

See the full Dolomite interactions page
See every supplement checked against Amiloride, Hydrochlorothiazide, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

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
Dolomite monograph › Uses, safety, and every drug interaction in one place Amiloride, Hydrochlorothiazide supplement interactions › Every supplement checked against Amiloride, Hydrochlorothiazide, ranked by severity Amiloride and Hydrochlorothiazide drug information › The full plain-English guide to this medication Supplement interaction checker › Check any supplement or product against your medications Browse medications A–Z › Every drug we've checked against herbs & supplements Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Dolomite and Amiloride, Hydrochlorothiazide Together: Common Questions

Can you take Dolomite with Amiloride, Hydrochlorothiazide?
This is rated a major interaction, so the combination is best avoided unless your doctor or pharmacist has specifically told you otherwise. Read the full details on this page and confirm with your pharmacist before combining them.
Why are there 2 interactions listed for Dolomite and Amiloride, Hydrochlorothiazide?
Amiloride, Hydrochlorothiazide belongs to more than one drug category, and Dolomite interacts with each of those categories a little differently. We list every one so nothing is missed — your overall risk is driven by the most serious of them.
How serious is the Dolomite and Amiloride, Hydrochlorothiazide interaction?
We rate it Major. This is a clinically significant combination that is generally best avoided, or used only under the direct supervision of your physician or pharmacist.

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

Still Have a Question About Amiloride, Hydrochlorothiazide and Dolomite?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.