Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Catnip & Fennel Combination Ingredients & Drug Interactions

by TerraVita

Catnip & Fennel Combination label
See full label image
Liquid Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Catnip & Fennel Combination against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Catnip & Fennel Combination is a dietary supplement by TerraVita with 1 active ingredient. Its ingredients are commonly taken for sleep and insomnia, anxiety and stress, digestive upset.Based on those ingredients, 894 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Catnip & Fennel Combination Glycerite Liquid Extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Catnip & Fennel Combination by TerraVita

Ask about any prescription or over-the-counter medication and we check it for interactions with Catnip & Fennel Combination by TerraVita — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Catnip & Fennel Combination by TerraVita

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 2 active ingredients.
  • “Catnip & Fennel Combination Glycerite Liquid Extract” is listed as a grouped ingredient — the label gives one combined amount (0.13 mL) without saying how much of each component you get.

This product contains two active ingredients: fennel glycerite liquid extract and catnip glycerite liquid extract. Fennel is traditionally used as a digestive aid and has been studied for menstrual cramping; catnip is an herbal preparation with a long history in folk medicine for relaxation and digestive comfort.

The extract form is delivered in glycerin, an inactive ingredient that serves as the liquid base.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed

This product doesn't appear to be marketed for a specific use, so we graded its ingredients' overall clinical evidence instead.

Moderate

Some clinical evidence supports its ingredients for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredients' overall clinical evidence instead.
  • On file: Dysmenorrhea — rated "Possibly Effective" (Fennel) (Natural Medicines).

For fennel, the evidence supports it as possibly effective for dysmenorrhea (menstrual cramping). The data we hold show insufficient reliable evidence for fennel's use in bronchitis, anxiety, nocturnal bedwetting, or cholera.

For catnip, the evidence we hold is insufficient reliable evidence to rate it for any of the conditions we have data on — amenorrhea, anxiety, tension headache, upper respiratory infections, indigestion, or gas. If you're considering this product for a specific condition, talk with your pharmacist or doctor about what the research actually supports.

The evidence, ingredient by ingredient Catnip Fennel

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 1 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Fennel is generally well tolerated when used as food, though concentrated supplements and essential oils warrant more caution. The most common side effects reported with fennel are gastrointestinal discomfort, sun sensitivity, and allergic reactions in sensitive people; rarely, seizures have been reported.

Catnip is generally well tolerated in tea amounts, but human safety data are limited. Common side effects include headache, feeling unwell (malaise), and vomiting; large amounts may cause stomach upset.

Importantly, the safety notes advise against fennel in medicinal or concentrated amounts during pregnancy due to limited data and possible hormone-like effects, and catnip should be avoided during pregnancy as it may stimulate the uterus and safety is not established. For breastfeeding, food amounts of fennel are likely fine, but medicinal doses and essential oil are not well studied; catnip has insufficient safety information for breastfeeding and should be avoided.

Side effects, ingredient by ingredient Catnip Fennel

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 2 of the 2 matched ingredients can interact with medications — Fennel, Catnip.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; lithium.
  • For scale: 895 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before you start, double-check whether you take blood thinners or antiplatelet drugs (Moderate), birth control pills or hormone replacement therapy (Moderate), the antibiotic ciprofloxacin or Cipro (Moderate), tamoxifen for breast cancer (Moderate), sedative or anti-anxiety medications (Moderate), or lithium (Moderate). These are the medication types we have documented interactions for in this product's ingredients.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

If you're on a blood thinner, take a birth control pill or hormone therapy, use sedative medications, or take lithium or ciprofloxacin, you need to check with your pharmacist before trying this product. Fennel and catnip are generally well tolerated in small amounts, but this is a concentrated herbal supplement and not appropriate during pregnancy.

Run your medications through the interaction checker on this page.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Nov 22, 2022.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Catnip & Fennel Combination, straight from the product label.

Brand TerraVita
Barcode (UPC) 064435222321
Net contents 1 Fluid Ounce(s); 30 mL
Market status On market
Date entered into DSLD Nov 22, 2022
DSLD ID 280102
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Catnip & Fennel Combination by TerraVita, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
25 Drop(s)
Maximum serving Sizes:
40 Drop(s)
Servings per container
227
UPC/BARCODE
064435222321
IngredientAmount% DV
Fennel Glycerite Liquid Extract0 NP--
Catnip Glycerite Liquid Extract0 NP--
Catnip & Fennel Combination Glycerite Liquid Extract0.13 mL--

Other ingredients: Glycerin

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Brand IP Statement(s)

Copyright 2018 TerraVita - Distributed by ZooScape LLC, All Rights Reserved.

Formula

Glycerite liquid extract (1:5)

Formulation

Alcohol free No flavor

Suggested/Recommended/Usage/Directions

Suggested Use: Take 25-40 drops of extract in a small amount of warm water 3-4 times daily. Shake well before using.

Precautions

Keep away from children.

Do not use if safety seal around cap is broken or missing.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Catnip & Fennel Combination by TerraVita label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Catnip & Fennel Combination label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Catnip & Fennel Combination by TerraVita

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size25 Drop(s) Dosage formLiquid Servings per container227 Amounts shown are per serving.

Catnip & Fennel Combination Glycerite Liquid Extract

Interacts with
248 drugs
0.13 mL per serving

Catnip is a mint-family herb most often used as a calming tea for sleep, anxiety, and minor digestive upset, but solid human research supporting these...

Catnip & Fennel Combination Glycerite Liquid Extract monograph & interactions

Other (inactive) ingredients: Glycerin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Catnip & Fennel Combination by TerraVita Drug Interactions

Want to check YOUR meds against Catnip & Fennel Combination?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
894Drugs
894 Moderate

Ingredients driving the most interactions

Catnip & Fennel Combination Glycerite Liquid Extract 248

Individual Drug Interactions

The ingredients in Catnip & Fennel Combination interact with 894 drugs. Click any drug to see the details.

1 of the 1 ingredient in Catnip & Fennel Combination interact with drugs. Each result below shows which ingredient is responsible. Catnip & Fennel Combination Glycerite Liquid Extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Catnip & Fennel Combination with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Catnip & Fennel Combination Glycerite Liquid Extract2 drug types · 248 drugs

Cns Depressants

Theoretically, concomitant use with drugs with sedative properties may cause additive effects and side effects.
Clinical and animal research shows that catnip has sedative properties.

Likelihood Possible Evidence D
Lithium

Theoretically, catnip might reduce excretion and increase levels of lithium.
Catnip is thought to have diuretic properties which might reduce lithium excretion. The dose of lithium might need to be decreased.

Likelihood Probable Evidence D
Catnip & Fennel Combination Glycerite Liquid Extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Catnip & Fennel Combination, from the product label.

TerraVita

See all TerraVita products
Name
ZooScape LLC
Phone Number
844-449-0444
Web Address
www.ZooScape.com
Pharmacist Counseling Corner

Catnip & Fennel Combination by TerraVita: Common Questions

Does Catnip & Fennel Combination by TerraVita interact with any medications?
Yes. Based on its ingredients, Catnip & Fennel Combination has a known interaction with 894 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Catnip & Fennel Combination contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Does fennel actually help with period cramps?
Fennel is rated possibly effective for dysmenorrhea (menstrual cramping) in the data we hold. That means there's some evidence it may help, but the evidence isn't definitive. If you're considering it for that reason, your pharmacist or doctor can help you weigh whether it's right for you.
Can I take this while pregnant?
No. Fennel should be avoided in medicinal or concentrated amounts during pregnancy due to limited safety data and possible hormone-like effects. Catnip should also be avoided during pregnancy because it may stimulate the uterus and safety is not established. Talk with your doctor before using this product if you're pregnant or planning to be.
Is this safe to use while breastfeeding?
Food amounts of fennel are likely fine, but medicinal doses and fennel essential oil are not well studied during breastfeeding. Catnip does not have enough safety information for breastfeeding and should be avoided. If you're breastfeeding and interested in this product, check with your pharmacist or doctor first.
What are the most common side effects?
Fennel may cause gastrointestinal discomfort, sun sensitivity, or allergic reactions in sensitive people. Catnip may cause headache, feeling unwell, or vomiting. Large amounts of either can cause stomach upset. Most people tolerate these extracts well at normal doses, but if you notice any of these, stop and talk with your pharmacist.
Can this product work if I'm on birth control?
Fennel has estrogen-like compounds that theoretically could interfere with how contraceptive drugs work, and the interaction is rated Moderate. You should check with your pharmacist or doctor before using this product if you're on birth control, as they may need to discuss the timing or whether it's right for you.
Why is this product called a glycerite?
A glycerite is an herbal extract made by soaking plant material in glycerin instead of alcohol. Glycerin is the liquid base that carries the active plant compounds, making this a non-alcohol option.

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

Not sure if Catnip & Fennel Combination is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Catnip & Fennel Combination label
Go deeper

The Full Monographs Behind Catnip & Fennel Combination’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Catnip

Interacts with 248 drugs

Catnip is a mint-family herb most often used as a calming tea for sleep, anxiety, and minor digestive upset, but solid human research supporting these uses is lacking. It is generally consid...

Read the full Catnip monograph → Herb & supplement monograph

Fennel

Interacts with 740 drugs

Fennel is a Mediterranean herb widely used as a food and spice, and traditionally taken for digestive complaints, colic, and menstrual cramps. Some small studies suggest possible benefit for...

Read the full Fennel monograph →
Sources

Sources & How We Checked

Catnip & Fennel Combination's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

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

The 24 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Fennel 17 references
  1. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  3. Zhu M, Wong PY, Li RC. Effect of oral administration of fennel (Foeniculum vulgare) on ciprofloxacin absorption and disposition in the rat. J Pharm Pharmacol 1999;51:1391-6.
  4. Gral N, Beani JC, Bonnot D, et al. [Plasma levels of psoralens after celery ingestion]. Ann Dermatol Venereol 1993;120:599-603.
  5. Burkhard PR, Burkhardt K, Haenggeli CA, Landis T. Plant-induced seizures: reappearance of an old problem. J Neurol 1999;246:667-70. PubMed
  6. Rosti L, Nardini A, Bettinelli ME, Rosti D. Toxic effects of a herbal tea mixture in two newborns. Acta Paediatrica 1994;83:683. PubMed
  7. Cuzzolin L, Zaffani S, and Benoni G. Safety implications regarding use of phytomedicines. Eur.J Clin Pharmacol. 2006;62:37-42. PubMed
  8. Tognolini, M., Ballabeni, V., Bertoni, S., Bruni, R., Impicciatore, M., and Barocelli, E. Protective effect of Foeniculum vulgare essential oil and anethole in an experimental model of thrombosis. Pharmacol.Res 2007;56(3):254-260. PubMed
  9. Subehan, Usia, T., Iwata, H., Kadota, S., and Tezuka, Y. Mechanism-based inhibition of CYP3A4 and CYP2D6 by Indonesian medicinal plants. J Ethnopharmacol. 5-24-2006;105(3):449-455. PubMed
  10. Tognolini, M., Barocelli, E., Ballabeni, V., Bruni, R., Bianchi, A., Chiavarini, M., and Impicciatore, M. Comparative screening of plant essential oils: phenylpropanoid moiety as basic core for antiplatelet activity. Life Sci. 2-23-2006;78(13):1419-1432. PubMed
  11. Subehan, Zaidi, S. F., Kadota, S., and Tezuka, Y. Inhibition on human liver cytochrome P450 3A4 by constituents of fennel (Foeniculum vulgare): identification and characterization of a mechanism-based inactivator. J Agric.Food Chem. 12-12-2007;55(25):101 PubMed
  12. LEVY, S. B. Bronchial asthma due to ingestion of fennel and fennel seed. Ann.Allergy 1948;6(4):415.
  13. Ottolenghi, A., De Chiara, A., Arrigoni, S., Terracciano, L., and De Amici, M. [Diagnosis of food allergy caused by fruit and vegetables in children with atopic dermatitis]. Pediatr Med Chir 1995;17(6):525-530.
  14. Trabace L, Tucci P, Ciuffreda L, et al. "Natural" relief of pregnancy-related symptoms and neonatal outcomes: above all do no harm. J Ethnopharmacol. 2015;174:396-402. PubMed
  15. Denaxa D, Arkwright PD. Fennel as a cause of immediate hypersensitivity to toothpaste. Ann Allergy Asthma Immunol. 2020;125(1):99-100. PubMed
  16. Lee HW, Ang L, Lee MS, Alimoradi Z, Kim E. Fennel for reducing pain in primary dysmenorrhea: a systematic review and meta-analysis of randomized controlled trials. Nutrients 2020;12(11):3438. PubMed
  17. Mathew T, John SK, Javali M, Vasireddy M, Nadig R, Sarma GRK. Substance use related cluster headache: A case series. Headache 2022;62(7):908-910. PubMed

See these in context on the Fennel monograph →

Catnip 7 references
  1. Foster S, Tyler VE. Tyler's Honest Herbal: A Sensible Guide to the Use of Herbs and Related Remedies. 3rd ed., Binghamton, NY: Haworth Herbal Press, 1993.
  2. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  3. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  4. Osterhoudt KC, Lee SK, Callahan JM, Henretig FM. Catnip and the alteration of human consciousness. Vet Hum Toxicol 1997;39:373-5.
  5. Sherry, C. J. and Hunter, P. S. The effect of an ethanol extract of catnip (Nepeta cataria) on the behavior of the young chick. Experientia 2-15-1979;35(2):237-238. PubMed
  6. Harney, J. W., Barofsky, I. M., and Leary, J. D. Behavioral and toxicological studies of cyclopentanoid monoterpenes from Nepeta cataria. Lloydia. 1978;41(4):367-374.
  7. Massoco, C. O., Silva, M. R., Gorniak, S. L., Spinosa, M. S., and Bernardi, M. M. Behavioral effects of acute and long-term administration of catnip (Nepeta cataria) in mice. Vet.Hum.Toxicol 1995;37(6):530-533.

See these in context on the Catnip monograph →

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
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team