Medication interaction hub

What Supplements Interact with Dutasteride, Tamsulosin?

Dutasteride, Tamsulosin brand name: Jalyn. Every interaction below applies to the brands too.

139 Interactions 3 Major 95 Moderate 41 Minor
Curated & coded by · Clinical Pharmacist · Updated September 15, 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 Dutasteride, Tamsulosin? 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 Dutasteride, Tamsulosin 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.

Men taking Jalyn (dutasteride and tamsulosin) for an enlarged prostate should treat this list as a serious one, starting with its three major entries. Grapefruit juice can raise tamsulosin levels, and more alpha blocker in the blood means more dizziness and blood pressure drops when standing. St. John's wort does the opposite, speeding the drug's breakdown so it may quietly work less well, and activated charcoal can soak up a dose before it absorbs.

Nearly all of the 95 moderate and 41 minor entries follow the same script, nudging the liver enzyme that clears these medicines up or down and shifting how much drug reaches your blood. A smaller cluster interferes with absorption of pills generally, so space fiber and charcoal products well apart from your dose. Sort out the three majors with a pharmacist first; the rest are mostly a matter of knowing which way each one pushes.

— , Clinical Pharmacist · July 18, 2026

Major 3 Moderate 95 Minor 41 No known interaction 1,313

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 ↓

Top Ingredient Interactions

Dutasteride, Tamsulosin: Top Interactions at a Glance

The most significant Dutasteride, Tamsulosin supplement & herbal interactions, colored by severity. Tap any ingredient to open the full report for that pair.

Showing the 12 highest-ranked of 139 interacting ingredients — plus 1,313 more checked with no known interaction. See the complete ranked list.

Start here

The Major Interactions to Know About

The most clinically significant Dutasteride, Tamsulosin + supplement combinations in our database, best-documented first. Open any card for the full report.

Major Likelihood Likely Grapefruit + Dutasteride, Tamsulosini

Grapefruit juice can increase levels of drugs metabolized by CYP3A4.

Read the full interaction Major Likelihood Probable Activated Charcoal + Dutasteride, Tamsulosini

Activated charcoal reduces systemic exposure to many drugs, including those that undergo enterohepatic recirculation, regardless of the route of administration.

Read the full interaction Major Likelihood Probable St. John's Wort + Dutasteride, Tamsulosini

St.

Read the full interaction
The complete list

Every Supplement Checked Against Dutasteride, Tamsulosin

All 1,452 ingredients in our database, ranked by severity — 139 with a Dutasteride, Tamsulosin interaction on file and 1,313 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 Dutasteride, Tamsulosin?

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 Delta-9-tetrahydrocannabinol (thc) with Dutasteride, Tamsulosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, THC may increase the levels and clinical effects of CYP3A4 substrates.

Full Delta-9-tetrahydrocannabinol (thc) + Dutasteride, Tamsulosin answer

Can you take Green Tea with Dutasteride, Tamsulosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Green tea is unlikely to produce clinically significant changes in the levels and clinical effects of CYP3A4 substrates.

Full Green Tea + Dutasteride, Tamsulosin answer

Can you take Kava with Dutasteride, Tamsulosin?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. It is unclear if kava inhibits CYP3AA; research is conflicting.

Full Kava + Dutasteride, Tamsulosin answer

Can you take Beet with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, beet might increase the levels of CYP3A4 substrates.

Full Beet + Dutasteride, Tamsulosin answer

Can you take Berberine with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, berberine might increase serum levels of drugs metabolized by CYP3A4.

Full Berberine + Dutasteride, Tamsulosin answer

Can you take Beta-methylphenethylamine (bmpea) with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, BMPEA might increase the levels and clinical effects of CYP3A4 substrates.

Full Beta-methylphenethylamine (bmpea) + Dutasteride, Tamsulosin answer

Can you take Bishop's Weed with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Bergapten, a constituent of bishop's weed, has been shown to inhibit cytochrome P450 3A4 (CYP3A4) in vitro.

Full Bishop's Weed + Dutasteride, Tamsulosin answer

Can you take Bitter Orange with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Bitter orange might increase levels of drugs metabolized by CYP3A4.

Full Bitter Orange + Dutasteride, Tamsulosin answer

Can you take Black Pepper with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, black pepper might increase levels of drugs metabolized by CYP3A4.

Full Black Pepper + Dutasteride, Tamsulosin answer

Can you take Bog Labrador Tea with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. In vitro research shows that aqueous and ethanolic extracts of Bog Labrador tea leaves can increase the concentration of cytochrome P450 3A4...

Full Bog Labrador Tea + Dutasteride, Tamsulosin answer

Can you take Boswellia Serrata with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.

Full Boswellia Serrata + Dutasteride, Tamsulosin answer

Can you take Bulbine Natalensis with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, Bulbine natalensis stem might reduce the levels and clinical effects of CYP3A4 substrates.

Full Bulbine Natalensis + Dutasteride, Tamsulosin answer

Can you take Butcher's Broom with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, butcher's broom might reduce the effects of alpha-adrenergic antagonists.

Full Butcher's Broom + Dutasteride, Tamsulosin answer

Can you take Calamus with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking calamus with drugs metabolized by CYP3A4 might increase drug levels and potentially increase the risk of adverse effec...

Full Calamus + Dutasteride, Tamsulosin answer

Can you take Cannabis with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, cannabis may increase the levels and adverse effects of CYP3A4 substrates.

Full Cannabis + Dutasteride, Tamsulosin answer

Can you take Cat's Claw with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, cat's claw might increase or decrease the levels and effects of drugs metabolized by CYP3A4.

Full Cat's Claw + Dutasteride, Tamsulosin answer

Can you take Ceylon Leadwort with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Plumbagin, a constituent of Ceylon leadwort, has been shown to inhibit cytochrome P450 3A4 (CYP3A4) in vitro.

Full Ceylon Leadwort + Dutasteride, Tamsulosin answer

Can you take Chanca Piedra with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, use of chanca piedra might increase the levels and clinical effects of CYP3A4 substrates.

Full Chanca Piedra + Dutasteride, Tamsulosin answer

Can you take Chokeberry with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, chokeberry might increase levels of drugs metabolized by CYP3A4.

Full Chokeberry + Dutasteride, Tamsulosin answer

Can you take Clove with Dutasteride, Tamsulosin?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concomitant use of clove may increase levels of drugs metabolized by CYP3A4.

Full Clove + Dutasteride, Tamsulosin 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) Dutasteride, Tamsulosin is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by Dutasteride, Tamsulosin, 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.

Dutasteride, Tamsulosin sits in 3 interaction categories. Open any one to see what the group means:

Cytochrome P450 3A4 (Cyp3A4) Substrates 121 ingredients

A drug-metabolism group: these medications are processed by the named liver enzyme (a cytochrome P450). Supplements that speed this enzyme up or slow it down can lower or raise the medication's levels in your body.

121 of the supplement ingredients on this page reach Dutasteride, Tamsulosin 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 Dutasteride, Tamsulosin 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 Dutasteride, Tamsulosin through this category.

Check a real product

Take a Supplement Product? Check the Whole Bottle Against Dutasteride, Tamsulosin

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 Dutasteride, Tamsulosin.

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Pharmacist Counseling Corner

Dutasteride, Tamsulosin & Supplements: Common Questions

What supplements interact with Dutasteride, Tamsulosin?
More than you might expect — 139 in total, though they are far from equal: 3 are rated major, 95 moderate, and 41 minor. The ranked list on this page puts the ones that genuinely matter first, and every entry opens a full report on that exact pair. The highest-ranked right now: Grapefruit, Activated Charcoal, St. John's Wort.
Which Dutasteride, Tamsulosin supplement interactions are the most serious?
The 3 major-rated combinations — led by Grapefruit, Activated Charcoal and St. John's Wort — deserve real caution: these are the ones generally best avoided, or used only with your prescriber watching. If you take any of them today, don't panic and don't stop anything abruptly — call your pharmacist first. Jump to the ranked list.
Can I take vitamins or supplements while on Dutasteride, Tamsulosin?
Usually yes — most people on Dutasteride, Tamsulosin can take most supplements. The catch is the exceptions, and they aren't always the exotic ones (St. John's Wort trips up more prescriptions than almost anything sold next to it). Look up each ingredient you actually take in the list above, and treat "no known interaction" as a green-ish light, not a guarantee. Try the label scanner or the interaction checker.
Do brands like Jalyn have the same supplement interactions as Dutasteride, Tamsulosin?
Yes — Jalyn all contain Dutasteride, Tamsulosin, 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.
What about Dutasteride, Tamsulosin and my other medications?
This page covers Dutasteride, Tamsulosin against supplements and herbal ingredients. Checking Dutasteride, Tamsulosin 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

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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 15, 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.