Drug & supplement interaction

Wild Thyme + Levocetirizine

Levocetirizine brand name: Xyzal.

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

We found no known interaction between Wild Thyme and Levocetirizine 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.

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Interaction report

Wild Thyme and Levocetirizine

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 Levocetirizine and Wild Thyme 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 Wild Thyme at all — not against Levocetirizine, 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.

Wild Thyme safety at a glance

Wild Thyme overall Use caution Generally well tolerated as a food or tea, but concentrated oils and extracts need more care.
Pregnancy Avoid Avoid medicinal or essential-oil amounts during pregnancy because safety is not established.
Breastfeeding Use caution Limited safety data, so avoid medicinal doses unless cleared by your doctor.

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

Still wondering about combining Levocetirizine and Wild Thyme? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Levocetirizine’s Own FDA Label Lists

This is not an interaction — none of it involves Wild Thyme. These are the most notable effects listed in the ADVERSE REACTIONS section of Levocetirizine’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 4 of them are worth acting on rather than waiting out — marked below.

  • Trouble passing urine Worth acting on
  • Fainting Worth acting on
  • Hives Worth acting on
  • Bleeding or bruising Worth acting on
  • Weight gain
  • A stuffy or runny nose
  • Sore throat
  • Dry mouth
  • Cough
  • Drowsiness

Showing the 10 most notable of 16 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Levocetirizine. Read the label on DailyMed › Wild Thyme’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Wild Thyme side to compare — that is a limit of the record, not a statement that Wild Thyme has no side effects.

From our Q&A

Questions About Wild Thyme or Levocetirizine

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Wild Thyme or Levocetirizine, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Levocetirizine

This page covers Wild Thyme only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Levocetirizine page lists 25 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Beer (moderate), Biofeedback (moderate), Coffee Charcoal (moderate) and Dendrobium (moderate).

By severity: 1 major · 15 moderate · 9 minor.

From our pharmacist’s overview on the Levocetirizine page

“Activated charcoal is the one entry here I would treat as a hard stop, since it can soak up levocetirizine (Xyzal) in the gut and blunt the dose before it has a chance to work, and it is the only major-rated interaction among the 25 ingredients on this page. Even so, the list as a whole earns genuine care.”

Reviewed by 2 · Jul 18, 2026

Open the Levocetirizine interaction page

One more smart check

Taking Wild Thyme as Part of a Dietary Supplement Product? Check It for Interactions

We hold 1 real supplement products containing Wild Thyme, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Wild Thyme. Even though Wild Thyme itself has no known interaction with Levocetirizine, 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 Wild Thyme and Levocetirizine 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 Wild Thyme
Steady interest

#1,300 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Levocetirizine
Steady interest

#1,543 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.
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Wild Thyme and Levocetirizine records this page draws on were last updated June 22, 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 Wild Thyme

What is Wild Thyme?

  • Cough and respiratory complaints
  • Sore throat
  • Digestive upset
  • Antimicrobial use
  • Mild spasms or cramps

Wild thyme is a fragrant mint-family herb traditionally used for coughs, sore throats, and digestive complaints, and it contains aromatic oils with mild antimicrobial properties in lab studies. Good-quality human evidence is limited, so it is best viewed as a gentle traditional remedy rather than a proven treatment. Talk to a pharmacist or doctor before using it, especially in concentrated essential-oil form.

Thymus serpyllum · Lamiaceae · Aerial parts (flowering tops, leaves) and essential oil · Tea, dried herb, tincture, capsules, essential oil

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

Wild Thyme: dosing

There is no official standardized dose for wild thyme, and the right amount depends on the form and product. A common traditional use is to steep a small amount of the dried herb in hot water to make a tea.Because product strengths vary widely, the safest approach is to follow the directions on the label and not exceed the recommended amount. Essential oils are highly concentrated and require special handling.

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

Read the full Wild Thyme monograph & all interactions
Medication

About Levocetirizine

What Is Levocetirizine Used For?

Brand name: Xyzal

Levocetirizine relieves symptoms of seasonal allergic rhinitis (hay fever) and perennial allergic rhinitis (year-round indoor allergies) — including runny nose, sneezing, and itchy, watery eyes. It also treats the skin symptoms of chronic idiopathic urticaria (hives with no identified cause) in adults and children as young as 6 months of age.

The oral solution is specifically indicated for perennial allergic rhinitis in children 6 months to 2 years of age, and Xyzal oral solution shares this same use. Tablet forms cover seasonal and perennial allergic rhinitis and chronic idiopathic urticaria, though the exact approved age ranges vary by product — always check the labeling for the specific product you are using.

See full Levocetirizine drug information
Keep checking

Other Drugs & Wild Thyme

Browse every other medication we’ve checked against Wild Thyme — 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 Wild Thyme 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 Wild Thyme list.

See the full Wild Thyme interactions page
See every supplement checked against Levocetirizine, ranked by severity
Sources

Sources & How We Checked

We checked Wild Thyme against Levocetirizine in the Natural Medicines interaction database and found no documented interaction on file. The medication overview comes from MedlinePlus, and supplement label details from the NIH Dietary Supplement Label Database.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Wild Thyme monograph › Uses, safety, and every drug interaction in one place Levocetirizine supplement interactions › Every supplement checked against Levocetirizine, ranked by severity Levocetirizine drug information › The full plain-English guide to this medication Supplement interaction checker › Check any supplement or product against your medications Browse medications A–Z › Every drug we've checked against herbs & supplements Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Wild Thyme and Levocetirizine Together: Common Questions

Is it safe to take Wild Thyme with Levocetirizine?
We do not list a known interaction between Wild Thyme and Levocetirizine. 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.
Does Levocetirizine interact with any supplements?
Yes. Levocetirizine has documented interactions with 25 supplements in our database — Wild Thyme is not one of them. The Levocetirizine interaction page linked on this page lists every one, ranked by severity.

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

Still Have a Question About Levocetirizine and Wild Thyme?

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.