Drug & supplement interaction

Turkey Tail Mushroom + Cyclopentolate

Cyclopentolate brand name: Cyclogyl.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Turkey Tail Mushroom and Cyclopentolate 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 two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Turkey Tail Mushroom and Cyclopentolate

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 Cyclopentolate and Turkey Tail 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.

Turkey Tail Mushroom safety at a glance

Turkey Tail Mushro... overall Use caution Generally well tolerated in healthy adults, but quality and evidence vary, so check with a healthcare provider first.
Pregnancy Avoid Not enough safety data, so it is best avoided during pregnancy.
Breastfeeding Avoid Not enough safety data, so it is best avoided while breastfeeding.

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

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

Why No Interaction Is Listed for Cyclopentolate

Interactions in our licensed database are recorded against drug classes, not just single drug names. Cyclopentolate is filed under a single classification — oral drugs. Turkey Tail Mushroom has documented interactions with 4 drug classes — the most serious being antidiabetes drugs (moderate), cyclophosphamide (moderate) and tamoxifen (nolvadex) (moderate) — and none of Cyclopentolate’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

Turkey Tail Mushroom Does Interact With Other Medications

Turkey Tail Mushroom has 88 moderate, 99 minor known drug interactions in our database — Cyclopentolate isn’t one of them. If you take anything else, check it against the full list below.

Moderate 88 Minor 99 No known interaction 2,643 (incl. Cyclopentolate)
Taking anything else?

Check Another of Your Medications Against Turkey Tail Mushroom

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

What to actually watch for

No Interaction Found — But Data Suggests Turkey Tail Mushroom and Cyclopentolate May Share a Side Effect

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • A fast or pounding heartbeat Additional detail

    Turkey Tail Mushroom

    “Orally, turkey tail mushroom and its PSK component are generally well tolerated. There have been reports of gastrointestinal side effects, hematological abnormalities, liver dysfunction, and palpitations, but these are in patients who received PSK in addition to standard chemotherapy. It is not known if these are due to PSK, the chemotherapy, or both.”

    Turkey Tail Mushroom · Natural Medicines adverse-effect record, reported in chemotherapy-related complications.

    “Palpitations have occurred when PSK is taken with standard chemotherapy for cancer. It is not clear if this is due to PSK, the chemotherapy, or both.”

    Turkey Tail Mushroom · Natural Medicines adverse-effect record, reported in cancer.

    1 source cited
    1. 1657. Mitomi T, Tsuchiya S, Iijima N, et al. Randomized, controlled study on adjuvant immunochemotherapy with PSK in curatively resected colorectal cancer. The Cooperative Study Group of Surgical Adjuvant Immunochemotherapy for Cancer of Colon and Rectum (Kanag DOI

    Cyclopentolate

    Listed in the ADVERSE REACTIONS section of the FDA label for Cyclopentolate. Read the label on DailyMed ›

Reported for Turkey Tail Mushroom but not commonly for Cyclopentolate: liver problems, stomach upset, a low platelet count and bleeding in the gut.

Effects for Cyclopentolate come from the ADVERSE REACTIONS section of its FDA label; effects for Turkey Tail Mushroom come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Everything else you take

See Every Supplement That Interacts With Cyclopentolate

This page covers Turkey Tail Mushroom only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Cyclopentolate page lists 17 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Coffee Charcoal (moderate), European Mandrake (moderate), Glucomannan (moderate) and Guar Gum (moderate).

By severity: 1 major · 7 moderate · 9 minor.

From our pharmacist’s overview on the Cyclopentolate page

“Cyclopentolate (Cyclogyl) is the dilating drop used for eye exams, and even though it goes in the eye rather than your mouth, its interaction list still calls for real vigilance, starting with the single major-rated entry. That entry is activated charcoal, which can bind drugs and lower their levels in the body even when the drug was n…”

Reviewed by 2 · Jul 18, 2026

Open the Cyclopentolate interaction page

How much people look this up

Where Turkey Tail Mushroom and Cyclopentolate 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 Turkey Tail Mushroom
Steady interest

#1,368 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Cyclopentolate
Top 5%

#113 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 Turkey Tail Mushroom reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Turkey Tail Mushroom and Cyclopentolate 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 Turkey Tail Mushroom

What is Turkey Tail Mushroom?

Turkey Tail Mushroom
  • Immune support
  • Used alongside cancer care
  • Gut and digestive health
  • General wellness and energy
  • Antioxidant support

Turkey tail is a woodland mushroom rich in polysaccharides like beta-glucans, and it is mainly used to support the immune system. Some of its purified extracts (PSK and PSP) have been studied as add-on treatments alongside conventional cancer therapy in Asia, but evidence for everyday supplement use is limited. It is generally well tolerated, but talk to your pharmacist or doctor before using it, especially if you have a health condition or take other medicines.

Trametes versicolor · Polyporaceae · Fruiting body and mycelium (and extracts such as PSK and PSP) · Capsules, tablets, powders, teas, tinctures, standardized extracts (PSK/PSP)

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

Turkey Tail Mushroom: dosing

There is no official standardized dose of turkey tail for general use. Doses vary widely depending on whether you are using the whole mushroom powder, a tea, or a concentrated extract such as PSK or PSP.Because products differ so much, the best approach is to follow the directions on the product label and not exceed them. A pharmacist or doctor can help you decide whether turkey tail is appropriate for you and review your other medicines and conditions first.

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

Read the full Turkey Tail Mushroom monograph & all interactions
Medication

About Cyclopentolate Ophthalmic

What Is Cyclopentolate Ophthalmic Used For?

Brand name: Cyclogyl

Cyclopentolate hydrochloride ophthalmic solution is used to produce mydriasis (pupil dilation) and cycloplegia (temporary paralysis of the eye's focusing muscle). These effects allow eye care providers to examine the inside of the eye more thoroughly.

See full Cyclopentolate Ophthalmic drug information
Keep checking

Other Drugs & Turkey Tail Mushroom

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

0Major
88Moderate
99Minor
2,642No known interaction
88 Moderate 99 Minor 2,642 No interaction
Moderate

88 interactions

Showing 60 of 88 moderate interactions — see all 88 on the Turkey Tail Mushroom page.

Minor

99 interactions

Showing 60 of 99 minor interactions — see all 99 on the Turkey Tail Mushroom page.

No interaction 2,642 drugs checked — show the list

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

Showing the 60 most looked-up of 2,642 medications checked with no known interaction — see the full Turkey Tail Mushroom list.

See the full Turkey Tail Mushroom interactions page
See every supplement checked against Cyclopentolate, ranked by severity
Evidence & sources

Turkey Tail Mushroom References

The 15 references that drive our Turkey Tail 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. Nakazato H, Koike A, Saji S, et al. Efficacy of immunochemotherapy as adjuvant treatment after curative resection of gastric cancer. Study Group of Immunochemotherapy with PSK for Gastric Cancer. Lancet 1994;343:1122-6. PubMed
  2. Mitomi T, Tsuchiya S, Iijima N, et al. Randomized, controlled study on adjuvant immunochemotherapy with PSK in curatively resected colorectal cancer. The Cooperative Study Group of Surgical Adjuvant Immunochemotherapy for Cancer of Colon and Rectum (Kanag DOI
  3. Torisu M, Hayashi Y, Ishimitsu T, et al. Significant prolongation of disease-free period gained by oral polysaccharide K (PSK) administration after curative surgical operation of colorectal cancer. Cancer Immunol Immunother 1990;31:261-8. PubMed
  4. Tsujitani, S., Kakeji, Y., Orita, H., Watanabe, A., Kohnoe, S., Baba, H., Anai, H., Maehara, Y., and Sugimachi, K. Postoperative adjuvant immunochemotherapy and infiltration of dendritic cells for patients with advanced gastric cancer. Anticancer Res 199
  5. Kojima, J., Kamata, T., and Monna, T. [Evaluation of immunochemotherapy in patients with primary liver cancer. Osaka Research Society for Liver, Gallbladder and Pancreas]. Gan To Kagaku Ryoho 1987;14(1):179-187.
  6. Fukuo, Y., Terashi, A., Hayashi, Y., Yano, Y., and Atarashi, J. [A clinical trial of cis-platinum (II) in combination with PSK and FT-207 in advanced stomach cancer]. Gan To Kagaku Ryoho 1985;12(4):960-965.
  7. Imaizumi, M., Kondo, T., Kamei, H., and Ichihashi, H. [Cooperative studies on surgical adjuvant immunochemotherapy for prevention of postoperative recurrence of gastric cancer]. Gan To Kagaku Ryoho 1984;11(1):60-68.
  8. Yeung JH and Or PM. Polysaccharide peptides from Coriolus versicolor competitively inhibit tolbutamide 4-hydroxylation in specific human CYP2C9 isoform and pooled human liver microsomes. Phytomedicine 2011;18(13):1170-5. PubMed
  9. Eliza WL, Fai CK, Chung LP. Efficacy of Yun Zhi (Coriolus versicolor) on survival in cancer patients: systematic review and meta-analysis. Recent Pat Inflamm Allergy Drug Discov 2012;6(1):78-87. PubMed
  10. Chan SL, Yeung JH. Effects of polysaccharide peptide (PSP) from Coriolus versicolor on the pharmacokinetics of cyclophosphamide in the rat and cytotoxicity in HepG2 cells. Food Chem Toxicol 2006;44:689-94. PubMed
  11. Serrano L, López AC, González SP, et al. Efficacy of a Coriolus versicolor-based vaginal gel in women with human papillomavirus-dependent cervical lesions: The PALOMA study. J Low Genit Tract Dis 2021;25(2):130-136. PubMed
  12. Meng F, Lin Y, Hu L, Feng W, Su P, Wu L. The therapeutic effect of Coriolus versicolor fruiting body on STZ-induced ICR diabetic mice. J Healthc Eng 2022;2022:7282453. PubMed
  13. Razmovski-Naumovski V, Kimble B, Laurenti D, Nammi S, Norimoto H, Chan K. Polysaccharide peptide extract from Coriolus versicolor increased T(max) of tamoxifen and maintained biochemical serum parameters, with no change in the metabolism of tamoxifen in t
  14. Cortés Bordoy J, de Santiago García J, Agenjo González M, et al. Effect of a multi-ingredient Coriolus-versicolor-based vaginal gel in women with HPV-dependent cervical lesions: The papilobs real-life prospective study. Cancers (Basel) 2023;15(15):3863. PubMed
  15. Nikolic M, Lazarevic N, Novakovic J, et al. Characterization, in vitro biological activity and in vivo cardioprotective properties of Trametes versicolor (L.:Fr.) quél. heteropolysaccharides in a rat model of metabolic syndrome. Pharmaceuticals (Basel) 20 PubMed

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 Turkey Tail Mushroom and Cyclopentolate Together: Common Questions

Is it safe to take Turkey Tail Mushroom with Cyclopentolate?
We do not list a known interaction between Turkey Tail Mushroom and Cyclopentolate. 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.
Do Turkey Tail Mushroom and Cyclopentolate have any of the same side effects?
Yes — our sources link each of them separately to one of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
How was the Turkey Tail Mushroom and Cyclopentolate combination checked?
Interactions in our licensed database are recorded against drug classes. Cyclopentolate is filed under 1 classification, and Turkey Tail Mushroom has documented interactions with 4 drug classes — none of Cyclopentolate'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 Turkey Tail Mushroom interact with any other medications?
Yes. Turkey Tail Mushroom has 187 documented drug interactions in our database — Cyclopentolate 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 Cyclopentolate interact with any supplements?
Yes. Cyclopentolate has documented interactions with 17 supplements in our database — Turkey Tail Mushroom is not one of them. The Cyclopentolate 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

Turkey Tail Mushroom monograph Uses, safety profile, and every drug interaction in one place Cyclopentolate Ophthalmic drug information The full plain-English guide to this medication Cyclopentolate supplement interactions Every supplement checked against Cyclopentolate, 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 15 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Cyclopentolate and Turkey Tail 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.