Medication interaction hub

What Supplements Interact with Polythiazide, Prazosin?

Polythiazide, Prazosin brand name: Minizide. Every interaction below applies to the brands too.

228 Interactions 10 Major 193 Moderate 25 Minor
Curated & coded by · Clinical Pharmacist · Updated September 24, 2026

Drug–supplement interaction data sourced from Natural Medicines Pro, the licensed clinical database from TRC Healthcare / Therapeutic Research, with additional analysis by the HelloPharmacist Pharmacist Team. Our sources · Editorial policy

What is this page for?

One answer, for one medication: what supplements and herbal products interact with Polythiazide, Prazosin? Every vitamin, herb, and supplement ingredient we’ve checked against it is on this page, ranked by severity, each linking to the full report for that exact pair.

This page covers supplement interactions only — to check Polythiazide, Prazosin against your other medications, use the drug–drug interaction checker. Educational information from our licensed clinical databases, not medical advice. Our editorial policy

HelloPharmacist Bottom Line
Our Pharmacist Explains
What is this? The interaction data in the HelloPharmacist supplement database is licensed from Natural Medicines Pro by TRC Healthcare (Therapeutic Research). HelloPharmacist pharmacists often add our own analysis and context on top of that licensed data — such as this Bottom Line summary and the notes on individual interaction pages — and any such commentary is noted as ours.

Minizide pairs polythiazide, a water pill, with prazosin to lower blood pressure, and this list calls for real vigilance rather than a quick skim. Of the 228 supplement and herbal ingredients on file, 10 carry a major rating, and those deserve your attention first. Most entries push blood pressure lower than intended or stack onto the diuretic's fluid and potassium losses, while a smaller group, including tyramine and American mistletoe, can do the reverse and drive pressure up, working against the medicine.

Two other patterns matter. Larger amounts of calcium (dolomite counts here) can combine with the thiazide to raise calcium to harmful levels and strain the kidneys, and activated charcoal can soak up the medicine itself, so keep it well away from your dose. Around 20 ingredients add sun sensitivity. With 193 rated moderate and 25 minor, most pairings are manageable, but check the 10 majors against what you already take.

— , Clinical Pharmacist · July 18, 2026

Major 10 Moderate 193 Minor 25 No known interaction 1,224

This box checks one ingredient at a time (like turmeric or magnesium). Taking a supplement product with a whole label of ingredients? Search the product instead — we check every ingredient on it ↓

Most Viewed Ingredient Interactions

Polythiazide, Prazosin: Top Interactions at a Glance

The Polythiazide, Prazosin supplement & herbal interactions people checked most in the last 24 hours, colored by severity. Tap any ingredient to open the full report for that pair.

Showing the 12 highest-ranked of 228 interacting ingredients — plus 1,224 more checked with no known interaction. See the complete ranked list.

Start here

The Most-Checked Polythiazide, Prazosin Combinations Today

The Polythiazide, Prazosin + supplement pages people viewed most in the last 24 hours (resets at midnight). Open any card for the full report.

Moderate Likelihood Possible Gentian + Polythiazide, Prazosini

Theoretically, taking gentian with antihypertensive drugs might increase the risk of hypotension.

Read the full interaction Moderate Likelihood Possible Stinging Nettle + Polythiazide, Prazosini

Theoretically, combining stinging nettle with diuretic drugs may have additive effects.

Read the full interaction Moderate Likelihood Probable Cat's Claw + Polythiazide, Prazosini

Theoretically, taking cat's claw with antihypertensive drugs might increase the risk of hypotension.

Read the full interaction Moderate Likelihood Possible Tribulus + Polythiazide, Prazosini

Theoretically, taking tribulus with antihypertensive drugs might increase the risk of hypotension.

Read the full interaction Moderate Likelihood Possible Wahoo + Polythiazide, Prazosini

Theoretically, concomitant use of potassium-depleting diuretics with wahoo can increase the risk of cardiac glycoside toxicity due to potassium depletion.

Read the full interaction Major Likelihood Probable Dolomite + Polythiazide, Prazosini

Taking thiazides with dolomite might increase the risk of hypercalcemia and kidney failure.

Read the full interaction
The complete list

Every Supplement Checked Against Polythiazide, Prazosin

All 1,452 ingredients in our database, ranked by severity — 228 with a Polythiazide, Prazosin interaction on file and 1,224 with none found. Filter by severity or search any ingredient; hover the for what each ingredient is.

Looking for an interaction with a specific supplement product? Search products instead ↓

Straight answers

Can You Take It With Polythiazide, Prazosin?

One-line answers, one card per combination — scroll through today’s 20 and tap any card for the full report. A different set rotates in daily until every combination has had its turn.

Can you take Gentian with Polythiazide, Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking gentian with antihypertensive drugs might increase the risk of hypotension.

Full Gentian + Polythiazide, Prazosin answer

Can you take Stinging Nettle with Polythiazide, Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, combining stinging nettle with diuretic drugs may have additive effects.

Full Stinging Nettle + Polythiazide, Prazosin answer

Can you take Cat's Claw with Polythiazide, Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking cat's claw with antihypertensive drugs might increase the risk of hypotension.

Full Cat's Claw + Polythiazide, Prazosin answer

Can you take Tribulus with Polythiazide, Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking tribulus with antihypertensive drugs might increase the risk of hypotension.

Full Tribulus + Polythiazide, Prazosin answer

Can you take Wahoo with Polythiazide, Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concomitant use of potassium-depleting diuretics with wahoo can increase the risk of cardiac glycoside toxicity due to potass...

Full Wahoo + Polythiazide, Prazosin answer

Can you take Agar with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Agar forms a thick gel, which may disrupt the absorption of nutrients and medications.

Full Agar + Polythiazide, Prazosin answer

Can you take Algin with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, algin can alter the absorption of oral drugs.

Full Algin + Polythiazide, Prazosin answer

Can you take American Spikenard with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. American spikenard is purported to have diaphoretic properties.

Full American Spikenard + Polythiazide, Prazosin answer

Can you take Beet with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Beet and beetroot contain nitrates, which can cause vasodilation, potentially leading to lower blood pressure.

Full Beet + Polythiazide, Prazosin answer

Can you take Birch with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, birch might interfere with diuretic therapy.

Full Birch + Polythiazide, Prazosin answer

Can you take Black Psyllium with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.

Full Black Psyllium + Polythiazide, Prazosin answer

Can you take Blond Psyllium with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.

Full Blond Psyllium + Polythiazide, Prazosin answer

Can you take Carob with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, carob might also impair the absorption of oral drugs.

Full Carob + Polythiazide, Prazosin answer

Can you take Coenzyme Q10 with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, coenzyme Q10 might have additive effects with antihypertensive drugs.

Full Coenzyme Q10 + Polythiazide, Prazosin answer

Can you take Dendrobium with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. The dendrobium constituent dendrobine is reported to have hypotensive effects.

Full Dendrobium + Polythiazide, Prazosin answer

Can you take Fenugreek with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Fenugreek may also have an additive effect on blood pressure-lowering medications.

Full Fenugreek + Polythiazide, Prazosin answer

Can you take Humann Superbeets Heart Chews with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Each serving of HumanN SuperBeets includes 500mg of beetroot powder (2 chews).

Full Humann Superbeets Heart Chews + Polythiazide, Prazosin answer

Can you take Juniper with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, juniper berry might increase the risk of adverse effects from diuretic drugs.

Full Juniper + Polythiazide, Prazosin answer

Can you take Karaya Gum with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Co-administration of oral drugs with bulk forming laxatives such as karaya gum may decrease, increase, or have no effect on the absorption o...

Full Karaya Gum + Polythiazide, Prazosin answer

Can you take Marshmallow with Polythiazide, Prazosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, mucilage in marshmallow might impair absorption of oral drugs.

Full Marshmallow + Polythiazide, Prazosin answer
Read the list like a pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. 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.
  • Possible. Interaction 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
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each entry links to a full report with the clinical detail, likelihood, evidence level, and citations for that exact combination.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

How Does Our Interaction Checker Work?

Behind every verdict on this page is a category system. Our source database doesn’t document supplement interactions drug-by-drug — it documents them against groups of medications that behave the same way (for example, “drugs processed by the CYP3A4 liver enzyme” or “blood-thinning medications”).

So the check works in three steps: (1) Polythiazide, Prazosin is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by Polythiazide, Prazosin, and (3) each ingredient keeps its own severity, likelihood, and evidence grades from the underlying record. That’s why one supplement can carry several records for one drug — it may interact through more than one category.

Polythiazide, Prazosin sits in 9 interaction categories. Open any one to see what the group means:

Antihypertensive Drugs 119 ingredients

Blood-pressure-lowering medications. Supplements that lower (or raise) blood pressure can amplify or fight these drugs.

119 of the supplement ingredients on this page reach Polythiazide, Prazosin through this category.

Diuretic Drugs 73 ingredients

Medications that increase fluid loss. Supplements affecting fluid or electrolytes (like potassium) can interact with them.

73 of the supplement ingredients on this page reach Polythiazide, Prazosin through this category.

Photosensitizing Drugs 20 ingredients

Medications that make skin more sun-sensitive. Supplements with the same property can compound it.

20 of the supplement ingredients on this page reach Polythiazide, Prazosin through this category.

Oral Drugs 17 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

17 of the supplement ingredients on this page reach Polythiazide, Prazosin through this category.

Nephrotoxic Drugs 6 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

6 of the supplement ingredients on this page reach Polythiazide, Prazosin through this category.

Thiazide Diuretics 5 ingredients

Medications that increase fluid loss. Supplements affecting fluid or electrolytes (like potassium) can interact with them.

5 of the supplement ingredients on this page reach Polythiazide, Prazosin through this category.

Vasodilators 3 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

3 of the supplement ingredients on this page reach Polythiazide, Prazosin through this category.

Alpha-Adrenergic Antagonists 1 ingredient

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

1 of the supplement ingredient on this page reaches Polythiazide, Prazosin through this category.

Prazosin (Minipress) 1 ingredient

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

1 of the supplement ingredient on this page reaches Polythiazide, Prazosin through this category.

Related: does Polythiazide, Prazosin deplete any nutrients?

Polythiazide, Prazosin has 9 reported nutrient associations in the research literature — see the Polythiazide, Prazosin nutrient depletion report.

Check a real product

Take a Supplement Product? Check the Whole Bottle Against Polythiazide, Prazosin

Most supplements are combination products — and the interaction may come from an ingredient you didn’t buy it for. Search any product below (or scan its label) and we’ll check every ingredient on it against Polythiazide, Prazosin.

Search a supplement product

Type a product name, brand, or UPC — smart search across our full catalog.

Grounded search over our product catalog — every verdict comes from our interaction database, never AI guesswork. How we use AI

Or scan the bottle

Photograph any Supplement Facts panel — we read the ingredients and check each one against your medications. Free, in seconds.

Open the label scanner

Prefer typing? The interaction checker looks up products by name too.

Pharmacist Counseling Corner

Polythiazide, Prazosin & Supplements: Common Questions

What supplements interact with Polythiazide, Prazosin?
In our interaction database, 228 supplement and herbal ingredients have an interaction with Polythiazide, Prazosin on file — 10 rated major, 193 moderate, and 25 minor. That number sounds scarier than it is: severity matters far more than the count, which is why the list on this page is ranked instead of alphabetical. Start at the top. The highest-ranked right now: American Hellebore, Siberian Cocklebur, Tyramine.
Which Polythiazide, Prazosin supplement interactions are the most serious?
Focus on the major group: American Hellebore, Siberian Cocklebur, Tyramine, Activated Charcoal and American Mistletoe, among others. A major rating means the combination can be clinically significant, not that harm is guaranteed — but it's exactly the kind of thing to run past your pharmacist before your next dose, not after. Jump to the ranked list.
Can I take vitamins or supplements while on Polythiazide, Prazosin?
That depends entirely on which supplement. The honest answer for Polythiazide, Prazosin is in the ranked list above — and if what you take is a combination product with a dozen ingredients, don't check them one by one: photograph the label with our scanner and we'll check the whole thing at once. Try the label scanner or the interaction checker.
Do brands like Minizide have the same supplement interactions as Polythiazide, Prazosin?
Yes — Minizide all contain Polythiazide, Prazosin, so everything on this page applies to them equally. Interactions belong to the active drug, never to the brand on the box; the same is true of generics.
Where do these interaction ratings come from?
Every rating comes from the Natural Medicines database — the same evidence-graded reference pharmacists and hospitals use — and each interaction carries three separate grades: severity (how bad it can be), likelihood (how well it's documented in studies and case reports), and an evidence level. Our pharmacists review the content; we never let an AI decide an interaction. See how to read the ratings and our editorial policy.
Does Polythiazide, Prazosin deplete any vitamins or nutrients?
It might — Polythiazide, Prazosin has 9 reported nutrient-depletion associations in the research literature, which is a different question from interactions: instead of a supplement changing the drug, the drug may lower a nutrient over time. See the Polythiazide, Prazosin nutrient depletion report for the specifics and what to discuss with your pharmacist.
What about Polythiazide, Prazosin and my other medications?
This page covers Polythiazide, Prazosin against supplements and herbal ingredients. Checking Polythiazide, Prazosin against your other prescription or OTC medications is a different tool — our drug interaction checker covers that side. Head to the drug–drug interaction checker.

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

Where next

More Free Pharmacist Tools

Supplement interaction checker Check any supplement or product against your medications Supplement label scanner Photograph a Supplement Facts panel; we check every ingredient Browse medications A–Z Every drug we’ve checked against herbs & supplements Ingredient directory Every vitamin, herb & mineral we track, with interaction data Product directory Look up any bottle by name, brand, or barcode Ask a pharmacist Free, personal answer from our licensed team
Sourcing

Where This Data Comes From — and Why You Can Trust It

🧪 Licensed clinical database

Every interaction verdict on this page comes from Natural Medicines Pro (TRC Healthcare / Therapeutic Research) — the same evidence-graded reference used by pharmacists and hospitals. We license this data directly; we do not scrape it, and no AI invents an interaction.

🧑‍⚕️ Pharmacist review

This page is curated and coded by , Clinical Pharmacist, with additional analysis by the HelloPharmacist Pharmacist Team. Editorial commentary is ours; the licensed interaction records are shown as sourced.

🔄 Kept current

Our interaction database refreshes on a weekly cycle, and this page re-checks the live database every time it’s rebuilt — what you see reflects the database as of September 24, 2026.

🔍 Full transparency

How every dataset on this site is sourced, licensed, and updated is documented publicly: our data sources · editorial policy · how we use AI.

Educational information, not medical advice. An interaction being on file does not mean it will happen to you — and absence of one is not proof of safety. Never start or stop a medication or supplement without talking to your pharmacist or doctor.