Drug & supplement interaction

Traveler's Joy + Idelalisib

Idelalisib brand name: Zydelig.

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 Traveler's Joy and Idelalisib 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

Traveler's Joy and Idelalisib

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 Idelalisib and Traveler's Joy 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.

Worth understanding: our licensed dataset holds no drug-interaction record for Traveler's Joy at all — not against Idelalisib, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

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.

Traveler's Joy safety at a glance

Traveler's Joy overall Avoid The fresh plant is irritating and potentially toxic if eaten, with no proven medical benefit.
Pregnancy Avoid Avoid during pregnancy because of potential toxicity and lack of safety data.
Breastfeeding Likely Unsafe When used orally or topically. Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Idelalisib and Traveler's Joy? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Traveler's Joy and Idelalisib 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.

  • Diarrhea reported in 11.0% of FDA reports for Idelalisib Additional detail

    Traveler's Joy

    “Orally, traveler's joy can cause severe irritation of the gastrointestinal tract, including colic and diarrhea. Irritation of the urinary tract can also occur.

    Topically, skin contact can cause blisters and burns that are difficult to heal (18).”

    Traveler's Joy · Natural Medicines adverse-effect record, reported in burns.

    1 source cited
    1. 18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

    Idelalisib

    Listed in the ADVERSE REACTIONS section of the FDA label for Idelalisib, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

Effects for Idelalisib come from the ADVERSE REACTIONS section of its FDA label; effects for Traveler's Joy come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 7,040 voluntary FDA FAERS reports for Idelalisib that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Traveler's Joy in Pregnancy & Breastfeeding

Lactation Likely Unsafe

When used orally or topically.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

Everything else you take

See Every Supplement That Interacts With Idelalisib

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

The most serious there right now: Activated Charcoal (major), Grapefruit (major), St. John's Wort (major), Acacia Rigidula (moderate) and Adrafinil (moderate).

By severity: 3 major · 100 moderate · 40 minor.

From our pharmacist’s overview on the Idelalisib page

“Idelalisib (Zydelig) treats certain blood cancers, work that leaves little room for error, so start with the three major-rated entries on this page. Grapefruit raises idelalisib levels and the risk of side effects with them, St.”

Reviewed by 2 · Jul 18, 2026

Open the Idelalisib interaction page

One more smart check

Taking Traveler's Joy as Part of a Dietary Supplement Product? Check It for Interactions

We hold 14 real supplement products containing Traveler's Joy, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Traveler's Joy. Even though Traveler's Joy itself has no known interaction with Idelalisib, 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 Traveler's Joy and Idelalisib 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 Traveler's Joy
Steady interest

#1,277 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Idelalisib
Steady interest

#2,508 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 Traveler's Joy reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Traveler's Joy and Idelalisib records this page draws on were last updated July 11, 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 Traveler's Joy

What is Traveler's Joy?

  • Skin and joint complaints (traditional/folk use)
  • Homeopathic remedy for skin conditions
  • Traditional 'counter-irritant' poultice
  • Bach flower remedy for 'inattentiveness' or daydreaming

Traveler's Joy (Clematis vitalba) is a wild climbing vine that is best known as an ornamental hedge plant, not as a proven medicine. The fresh plant is irritating and can be toxic if eaten, and there is no good scientific evidence it treats any health condition. We do not recommend taking it internally.

Clematis vitalba · Ranunculaceae · Leaves and flowers (occasionally other aerial parts) · Rarely sold as a supplement; sometimes found as a homeopathic preparation or in traditional topical/folk remedies

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

Traveler's Joy: dosing

There is no established or safe medicinal dose for Traveler's Joy. When in doubt, choose a supplement with better safety and evidence instead.

From our Traveler's Joy monograph — the full record covers uses, side effects and every documented interaction.

Read the full Traveler's Joy monograph & all interactions
Medication

About Idelalisib

What Is Idelalisib Used For?

Brand name: Zydelig

Zydelig (idelalisib) is approved to treat relapsed chronic lymphocytic leukemia (CLL) — a cancer of the blood and bone marrow — when used together with rituximab. It is specifically for patients who have already received treatment and for whom rituximab alone would be appropriate due to other health conditions.

Zydelig is not approved or recommended as a first-line (initial) treatment for CLL or any other cancer, including small lymphocytic lymphoma (SLL) or follicular lymphoma (FL). It is also not approved in combination with bendamustine and rituximab, or with rituximab alone, for FL, SLL, or other slow-growing non-Hodgkin lymphomas.

Most-Reported Side Effects for Idelalisib

From FAERS, the FDA’s public side-effect reporting system (7,040 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Disease progression 1,225 reports
Diarrhea 771 reports
Pneumonia 437 reports
Fever 375 reports
Fatigue 301 reports
See full Idelalisib drug information
Keep checking

Other Drugs & Traveler's Joy

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

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

We also checked Traveler's Joy against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Traveler's Joy list.

See the full Traveler's Joy interactions page
See every supplement checked against Idelalisib, ranked by severity
Evidence & sources

Traveler's Joy References

The 1 references that drive our Traveler's Joy 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. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

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 Traveler's Joy and Idelalisib Together: Common Questions

Is it safe to take Traveler's Joy with Idelalisib?
We do not list a known interaction between Traveler's Joy and Idelalisib. 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 Traveler's Joy and Idelalisib 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.
Does Idelalisib interact with any supplements?
Yes. Idelalisib has documented interactions with 143 supplements in our database — Traveler's Joy is not one of them. The Idelalisib 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

Traveler's Joy monograph Uses, safety profile, and every drug interaction in one place Idelalisib drug information The full plain-English guide to this medication Idelalisib supplement interactions Every supplement checked against Idelalisib, 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 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Idelalisib and Traveler's Joy?

Our pharmacists answer your medication & supplement questions — free.

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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.