Drug & supplement interaction

Poria Mushroom + Pretomanid

Pretomanid brand name: Pretomanid.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Oct 4, 2026
The bottom line No known interaction

We found no known interaction between Poria Mushroom and Pretomanid in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the label for Pretomanid states a food rule worth keeping to.

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Interaction report

Poria Mushroom and Pretomanid

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Pretomanid and Poria Mushroom in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Poria Mushroom safety at a glance

Poria Mushroom overall Use caution Generally well tolerated in traditional use, but human safety data are limited.
Pregnancy Avoid Not enough safety information, so it is best avoided during pregnancy.
Breastfeeding Avoid No reliable safety data while breastfeeding, so avoidance is recommended.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Pretomanid and Poria Mushroom? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Pretomanid

Interactions in our licensed database are recorded against drug classes, not just single drug names. Pretomanid is filed under 5 classifications — including immunosuppressants, qt interval-prolonging drugs, antibiotic drugs. Poria Mushroom has documented interactions with 3 drug classes — the most serious being anticholinergic drugs (moderate), cholinergic drugs (moderate) and cns depressants (moderate) — and none of Pretomanid’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Poria Mushroom Does Interact With Other Medications

Poria Mushroom has 417 moderate known drug interactions in our database — Pretomanid isn’t one of them. If you take anything else, check it against the full list below.

Moderate 417 No known interaction 2,413 (incl. Pretomanid)
Taking anything else?

Check Another of Your Medications Against Poria Mushroom

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

What to actually watch for

What Poria Mushroom Itself Has Been Linked To

This is not an interaction — nothing below involves Pretomanid. It is the side-effect record for Poria Mushroom on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Poria Mushroom, this list is the first place to look. One entry is worth acting on rather than waiting out — marked below.

  • Wheezing / An allergic reaction Worth acting on Additional detail

    “Allergic reactions have been reported rarely, including allergic rhinitis and allergic asthma (12).”

    Poria Mushroom · Natural Medicines adverse-effect record, reported in allergic rhinitis (hay fever).

    1 source cited
    1. 12. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  • A stuffy or runny nose Additional detail

    Recorded for Poria Mushroom in the same Natural Medicines adverse-effect record shown under Wheezing / An allergic reaction above.

Everything above comes from the Natural Medicines adverse-effect record for Poria Mushroom — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Pretomanid’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Pretomanid column appears here.

How to take them

Some Pretomanid Products Have a Food Rule — Poria Mushroom Should Not Break It

At least one FDA label for a product containing Pretomanid says to take it with food. If you take Poria Mushroom on an empty stomach out of habit, keep them separate — and take Pretomanid with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Pretomanid products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

Recommended Dosage Pretomanid Tablets must be administered in combination with bedaquiline and linezolid with food [see Clinical Pharmacology (12.3) ] .

From the Dosage and Administration section of the FDA label we read for Pretomanid — where that label names a specific product, the instruction is that product's. See the Pretomanid drug page ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Everything else you take

See Every Supplement That Interacts With Pretomanid

This page covers Poria Mushroom only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Pretomanid page lists 143 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), Arsenic (major), Beer (major) and Cesium (major).

By severity: 10 major · 122 moderate · 11 minor.

From our pharmacist’s overview on the Pretomanid page

“Pretomanid is reserved for highly drug-resistant tuberculosis, and it can stress the liver and lengthen the heart's QT interval, so the supplements on this page deserve genuine care. Ten of the 143 ingredients on file carry a major rating, and nearly all of those either compound the liver risk (alcohol in beer or wine is the plainest e…”

Reviewed by 2 · Jul 18, 2026

Open the Pretomanid interaction page

One more smart check

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

We hold 1,303 real supplement products containing Poria Mushroom, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Poria Mushroom. Even though Poria Mushroom itself has no known interaction with Pretomanid, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Poria Mushroom and Pretomanid 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 Poria Mushroom
Top 25%

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

29 days ago today
Medication Pretomanid
Top half

#977 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.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Poria Mushroom reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified October 4, 2026. The Poria Mushroom and Pretomanid records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Poria Mushroom

What is Poria Mushroom?

  • Fluid retention and swelling
  • Digestive complaints
  • Sleep and calming support
  • General wellness and immune support
  • Urinary support

Poria mushroom (Fu Ling) is a fungus long used in Traditional Chinese Medicine, mainly as a mild diuretic and digestive and calming aid. Modern scientific evidence in humans is very limited, so its benefits are not well proven. It is generally considered well tolerated, but talk with your pharmacist or doctor before using it, and avoid it in pregnancy and breastfeeding due to a lack of safety data.

Wolfiporia extensa · Polyporaceae · Dried fungus body (sclerotium) · Dried slices, powder, capsules, teas, and ingredient in traditional herbal formulas

An interaction check asks whether these two react with each other — it does not ask whether Poria Mushroom is a good idea for someone in your situation. Here is what our Poria Mushroom record says about it on its own.

Poria Mushroom: dosing

There is no official, standardized dose of poria mushroom for any health condition. Do not exceed the recommended amount, and start low to see how you tolerate it.

From our Poria Mushroom monograph — the full record covers uses, side effects and every documented interaction.

Read the full Poria Mushroom monograph & all interactions
Medication

About Pretomanid

What Is Pretomanid Used For?

Brand name: Pretomanid

Pretomanid tablets are used as part of a three-drug regimen with bedaquiline and linezolid. The regimen treats adults with pulmonary (lung) TB that is highly drug-resistant, or resistant to isoniazid and rifampin when standard therapy has not worked or was not tolerated.

It is for a limited, specific group of patients. Approval is based on limited clinical safety and efficacy data.

Most-Reported Side Effects for Pretomanid

From FAERS, the FDA’s public side-effect reporting system (0 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Anemia 80 reports
Neuropathy peripheral 78 reports
Electrocardiogram qt prolonged 51 reports
Nausea 50 reports
Toxicity to various agents 26 reports
See full Pretomanid drug information Pretomanid NDC codes and packages
Keep checking

Other Drugs & Poria Mushroom

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

0Major
417Moderate
0Minor
2,412No known interaction
417 Moderate 2,412 No interaction
Moderate

417 interactions

Showing 60 of 417 moderate interactions — see all 417 on the Poria Mushroom page.

No interaction 2,412 drugs checked — show the list

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

Showing the 60 most looked-up of 2,412 medications checked with no known interaction — see the full Poria Mushroom list.

See the full Poria Mushroom interactions page
See every supplement checked against Pretomanid, ranked by severity
Evidence & sources

Poria Mushroom References

The 3 references that drive our Poria Mushroom monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  2. Kim H, Park I, Park K, Park S, Kim YI, Park BG. The positive effects of Poria cocos extract on quality of sleep in insomnia rat models. Int J Environ Res Public Health 2022;19(11):6629. PubMed
  3. Lv Q, Di X, Bian B, Li K, Guo J. Neuroprotective effects of Poria cocos (Agaricomycetes) essential oil on Aß1-40-induced learning and memory deficit in rats. Int J Med Mushrooms 2022;24(10):73-82.

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Poria Mushroom and Pretomanid Together: Common Questions

Is it safe to take Poria Mushroom with Pretomanid?
We do not list a known interaction between Poria Mushroom and Pretomanid. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Should I take Poria Mushroom and Pretomanid at the same time of day?
At least one FDA label for a product containing Pretomanid says to take it with food. If you take Poria Mushroom on an empty stomach out of habit, keep them separate and take Pretomanid with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Pretomanid products can differ — so check the directions on your own box. This is about absorption, not an interaction.
How was the Poria Mushroom and Pretomanid combination checked?
Interactions in our licensed database are recorded against drug classes. Pretomanid is filed under 5 classifications, and Poria Mushroom has documented interactions with 3 drug classes — none of Pretomanid's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Poria Mushroom interact with any other medications?
Yes. Poria Mushroom has 417 documented drug interactions in our database — Pretomanid is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Pretomanid interact with any supplements?
Yes. Pretomanid has documented interactions with 143 supplements in our database — Poria Mushroom is not one of them. The Pretomanid interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Poria Mushroom monograph Uses, safety profile, and every drug interaction in one place Pretomanid drug information The full plain-English guide to this medication Pretomanid supplement interactions Every supplement checked against Pretomanid, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 3 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Pretomanid and Poria Mushroom?

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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.