Medication interaction hub

What Supplements Interact with Prazosin?

Prazosin brand names: Minipress, Prazo, Prazin. Every interaction below applies to the brands too.

137 Interactions 4 Major 112 Moderate 21 Minor
Curated & coded by · Clinical Pharmacist · Updated September 22, 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 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 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.

Prazosin (Minipress) relaxes blood vessels by blocking alpha receptors, which is why doctors prescribe it for high blood pressure and, often, for PTSD nightmares. Sudden pressure drops with dizziness or fainting are already its signature risk, so the 137 supplements on this list warrant genuine attention rather than a quick skim. Most of the 112 moderate entries, from fish oil to celery seed extract, lower blood pressure themselves and can stack with prazosin's effect, while a smaller set works the opposite way and can undercut the drug's control.

The four major-rated entries are the ones to understand first. American hellebore and American mistletoe carry potent cardiovascular toxins, tyramine has raised blood pressure in human studies, and activated charcoal can adsorb an oral dose before it ever reaches the bloodstream. Only 21 entries rate minor, so a good working rule on prazosin is that anything touching blood pressure probably belongs on this page.

— , Clinical Pharmacist · July 18, 2026

Major 4 Moderate 112 Minor 21 No known interaction 1,315

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

Prazosin: Top Interactions at a Glance

The 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 137 interacting ingredients — plus 1,315 more checked with no known interaction. See the complete ranked list.

Start here

The Most-Checked Prazosin Combinations Today

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

Moderate Likelihood Possible Rhodiola + Prazosini

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

Read the full interaction Moderate Likelihood Possible Basil + Prazosini

Theoretically, basil might increase the risk of hypotension when taken with antihypertensive drugs.

Read the full interaction Moderate Likelihood Possible Flaxseed Oil + Prazosini

Theoretically, combining flaxseed oil with other antihypertensive drugs might have additive effects and increase the risk of hypotension.

Read the full interaction Moderate Likelihood Possible Cocoa + Prazosini

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

Read the full interaction Moderate Likelihood Possible Sea Buckthorn + Prazosini

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

Read the full interaction Moderate Likelihood Possible Gamma-aminobutyric Acid (gaba) + Prazosini

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

Read the full interaction
The complete list

Every Supplement Checked Against Prazosin

All 1,452 ingredients in our database, ranked by severity — 137 with a Prazosin interaction on file and 1,315 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 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 Rhodiola with Prazosin?

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

Full Rhodiola + Prazosin answer

Can you take Basil with Prazosin?

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

Full Basil + Prazosin answer

Can you take Flaxseed Oil with Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, combining flaxseed oil with other antihypertensive drugs might have additive effects and increase the risk of hypotension.

Full Flaxseed Oil + Prazosin answer

Can you take Cocoa with Prazosin?

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

Full Cocoa + Prazosin answer

Can you take Sea Buckthorn with Prazosin?

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

Full Sea Buckthorn + Prazosin answer

Can you take American Hellebore with Prazosin?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. American hellebore can have potent cardiovascular effects due to the toxic steroid ester alkaloids it contains.

Full American Hellebore + Prazosin answer

Can you take Tyramine with Prazosin?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Tyramine may increase the risk of hypertension and reduce the effects of antihypertensive drugs.

Full Tyramine + Prazosin answer

Can you take Activated Charcoal with Prazosin?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Activated charcoal reduces systemic exposure to many drugs, including those that undergo enterohepatic recirculation, regardless of the rout...

Full Activated Charcoal + Prazosin answer

Can you take American Mistletoe with Prazosin?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. American mistletoe contains phoratoxin, a compound toxic to humans that induces smooth muscle contraction and vasoconstriction, potentially...

Full American Mistletoe + Prazosin answer

Can you take Apple with Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Consuming apple juice with antihypertensive drugs might interfere with blood pressure control.

Full Apple + Prazosin answer

Can you take Banaba with Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concomitant use of banaba and antihypertensive drugs might cause additive effects.

Full Banaba + Prazosin answer

Can you take Beer with Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Concomitant use may increase the risk of acute hypotension.

Full Beer + Prazosin answer

Can you take Casein Peptides with Prazosin?

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

Full Casein Peptides + Prazosin answer

Can you take Cat's Claw with 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 + Prazosin answer

Can you take Celery with Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, celery seed extract might have additive effects with antihypertensive drugs.

Full Celery + Prazosin answer

Can you take Coca with Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, coca might reduce the effects of antihypertensive drugs.

Full Coca + Prazosin answer

Can you take Cod Liver Oil with Prazosin?

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

Full Cod Liver Oil + Prazosin answer

Can you take Coffee Charcoal with Prazosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Coffee charcoal can reduce the absorption of orally administered drugs and should be separated from oral drug administration by at least two...

Full Coffee Charcoal + Prazosin answer

Can you take Docosahexaenoic Acid (dha) with Prazosin?

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

Full Docosahexaenoic Acid (dha) + Prazosin answer

Can you take Eicosapentaenoic Acid (epa) with Prazosin?

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

Full Eicosapentaenoic Acid (epa) + 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) Prazosin is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by 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.

Prazosin sits in 5 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 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 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 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 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 Prazosin through this category.

About Prazosin

Prazosin is a blood pressure-lowering medication used to treat high blood pressure (hypertension), available as capsules under brand names including Minipress, Prazosin, Prazosin HCL, and Prazosin Hydrochloride.

Generic name: Prazosin  ·  Brand names: Minipress, Prazo, Prazin.

See the full Prazosin drug information

Related: does Prazosin deplete any nutrients?

Prazosin has 3 reported nutrient associations in the research literature — see the Prazosin nutrient depletion report.

Check a real product

Take a Supplement Product? Check the Whole Bottle Against 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 Prazosin.

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Products that contain Prazosin-interacting ingredients

Real supplements from the NIH label database that contain the top interacting ingredients on this page — each one is worth a full label check before combining with Prazosin.

TNT Thermanite by GEC Genetic Edge Compounds contains Tyramine Diablos ECA Fire Caps by Innovative Laboratories contains Tyramine Ultimate Burn by Schwartz Laboratories contains Tyramine Final Cutz by Infinite Labs contains Tyramine
Pharmacist Counseling Corner

Prazosin & Supplements: Common Questions

What supplements interact with Prazosin?
In our interaction database, 137 supplement and herbal ingredients have an interaction with Prazosin on file — 4 rated major, 112 moderate, and 21 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, Tyramine, Activated Charcoal.
Which Prazosin supplement interactions are the most serious?
Focus on the major group: American Hellebore, Tyramine, Activated Charcoal and American Mistletoe. 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 Prazosin?
That depends entirely on which supplement. The honest answer for 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 Minipress have the same supplement interactions as Prazosin?
Yes — Minipress, Prazo, Prazin all contain 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 Prazosin deplete any vitamins or nutrients?
It might — Prazosin has 3 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 Prazosin nutrient depletion report for the specifics and what to discuss with your pharmacist.
What about Prazosin and my other medications?
This page covers Prazosin against supplements and herbal ingredients. Checking 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, or read the full Prazosin drug information.

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

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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 22, 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.