Drug & supplement interaction

Catnip + Galantamine Extended Release

Galantamine Extended Release brand name: Razadyne ER.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Catnip and Galantamine Extended Release 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 Galantamine Extended Release states a food rule worth keeping to, and 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

Catnip and Galantamine Extended Release

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 Galantamine Extended Release and Catnip 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.

Catnip safety at a glance

Catnip overall Use caution Likely fine for most adults in tea amounts, but human safety data are limited.
Pregnancy Avoid Avoid during pregnancy, as it may stimulate the uterus and safety is not established.
Breastfeeding Avoid Not enough safety information is available, so it is best avoided.

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

Still wondering about combining Galantamine Extended Release and Catnip? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Galantamine Extended Release

Interactions in our licensed database are recorded against drug classes, not just single drug names. Galantamine Extended Release is filed under 5 classifications — including acetylcholinesterase (ache) inhibitors, cholinergic drugs, cytochrome p450 2d6 (cyp2d6) substrates. Catnip has documented interactions with 2 drug classes — the most serious being cns depressants (moderate) and lithium (moderate) — and none of Galantamine Extended Release’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

Catnip Does Interact With Other Medications

Catnip has 248 moderate known drug interactions in our database — Galantamine Extended Release isn’t one of them. If you take anything else, check it against the full list below.

Moderate 248 No known interaction 2,582 (incl. Galantamine Extended Release)
Taking anything else?

Check Another of Your Medications Against Catnip

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

What to actually watch for

No Interaction Found — But Data Suggests Catnip and Galantamine Extended Release May Share Several of the Same Side Effects

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.

  • Tiredness / Headache Additional detail

    Catnip

    “Orally, taking too much catnip may result in headache and malaise (6). In one case, a toddler developed a stomachache and irritability, followed by lethargy and a hypnotic state, after ingesting raisins soaked in catnip tea and chewing on the tea bag (5,2596).”

    Catnip · Natural Medicines adverse-effect record, reported in cluster headache.

    3 sources cited
    1. 6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
    2. 5. 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.
    3. 2596. Osterhoudt KC, Lee SK, Callahan JM, Henretig FM. Catnip and the alteration of human consciousness. Vet Hum Toxicol 1997;39:373-5.

    Galantamine Extended Release

    Listed in the ADVERSE REACTIONS section of the FDA label for Galantamine Extended Release. Read the label on DailyMed ›

  • Vomiting Additional detail

    Catnip

    “Orally, large amounts of catnip might cause stomachache and vomiting (6,2596).”

    Catnip · Natural Medicines adverse-effect record, reported in nausea and vomiting.

    2 sources cited
    1. 6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
    2. 2596. Osterhoudt KC, Lee SK, Callahan JM, Henretig FM. Catnip and the alteration of human consciousness. Vet Hum Toxicol 1997;39:373-5.

    Galantamine Extended Release

    Listed in the ADVERSE REACTIONS section of the FDA label for Galantamine Extended Release. Read the label on DailyMed ›

Reported for Catnip but not commonly for Galantamine Extended Release: mood changes or irritability.

Effects for Galantamine Extended Release come from the ADVERSE REACTIONS section of its FDA label; effects for Catnip come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 3,188 voluntary FDA FAERS reports for Galantamine Extended Release 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.

How to take them

Some Galantamine Extended Release Products Have a Food Rule — Catnip Should Not Break It

At least one FDA label for a product containing Galantamine Extended Release says to take it with food. If you take Catnip on an empty stomach out of habit, keep them separate — and take Galantamine Extended Release 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 Galantamine Extended Release 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.

( 2.1 ) Take with food; ensure adequate fluid intake during treatment (2.1) Hepatic impairment: should not exceed 16 mg/day for moderate hepatic impairment; do not use in patients with severe hepatic impairment ( 2.2 ) Renal impairment: should not exceed 16 mg/day for creatinine clearance 9 to 59 mL/min; do not use in patients with creatinine clearance less than 9 mL/min.

From the Dosage and Administration section of the FDA label we read for Galantamine Extended Release — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

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 Galantamine Extended Release

This page covers Catnip only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Galantamine Extended Release page lists 170 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), 1,3-dmaa (moderate) and Acacia Rigidula (moderate).

By severity: 3 major · 126 moderate · 41 minor.

From our pharmacist’s overview on the Galantamine Extended Release page

“Galantamine ER (Razadyne ER) treats Alzheimer's dementia by boosting acetylcholine, and because the people taking it are usually older adults already juggling several medicines, its 170 documented supplement interactions warrant genuine care rather than a shrug. Three carry a major rating, and those are the ones to learn first: grapefr…”

Reviewed by 2 · Jul 18, 2026

Open the Galantamine Extended Release interaction page

One more smart check

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

We hold 295 real supplement products containing Catnip, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Catnip. Even though Catnip itself has no known interaction with Galantamine Extended Release, 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 Catnip and Galantamine Extended Release 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 Catnip
Top half

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

29 days ago today
Medication Galantamine Extended Release
Steady interest

#2,239 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 Catnip reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Catnip and Galantamine Extended Release 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 Catnip

What is Catnip?

Catnip
  • Sleep and insomnia
  • Anxiety and stress
  • Digestive upset
  • Cold and flu symptoms
  • Insect repellent

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 considered fairly safe in small culinary or tea amounts for most adults, but it should be avoided during pregnancy and used cautiously otherwise. Talk to your pharmacist or doctor before using it, especially if you take medications or have a health condition.

Nepeta cataria · Lamiaceae · Leaves, flowers, and essential oil · Tea, capsules, tincture, dried herb, essential oil

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

Catnip: dosing

There is no well-established standard dose for catnip. Amounts used in traditional practice vary widely, and reliable dosing guidelines from clinical studies are not available.The safest approach is to follow the directions on the product label and not exceed the recommended amount.

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

Read the full Catnip monograph & all interactions
Keep checking

Other Drugs & Catnip

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

0Major
248Moderate
0Minor
2,581No known interaction
248 Moderate 2,581 No interaction
Moderate

248 interactions

Showing 60 of 248 moderate interactions — see all 248 on the Catnip page.

No interaction 2,581 drugs checked — show the list

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

Showing the 60 most looked-up of 2,581 medications checked with no known interaction — see the full Catnip list.

See the full Catnip interactions page
See every supplement checked against Galantamine Extended Release, ranked by severity
Evidence & sources

Catnip References

The 7 references that drive our Catnip 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. 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.

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 Catnip and Galantamine Extended Release Together: Common Questions

Is it safe to take Catnip with Galantamine Extended Release?
We do not list a known interaction between Catnip and Galantamine Extended Release. 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 Catnip and Galantamine Extended Release have any of the same side effects?
Yes — our sources link each of them separately to 3 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.
Should I take Catnip and Galantamine Extended Release at the same time of day?
At least one FDA label for a product containing Galantamine Extended Release says to take it with food. If you take Catnip on an empty stomach out of habit, keep them separate and take Galantamine Extended Release with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Galantamine Extended Release products can differ — so check the directions on your own box. This is about absorption, not an interaction.
How was the Catnip and Galantamine Extended Release combination checked?
Interactions in our licensed database are recorded against drug classes. Galantamine Extended Release is filed under 5 classifications, and Catnip has documented interactions with 2 drug classes — none of Galantamine Extended Release'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 Catnip interact with any other medications?
Yes. Catnip has 248 documented drug interactions in our database — Galantamine Extended Release 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 Galantamine Extended Release interact with any supplements?
Yes. Galantamine Extended Release has documented interactions with 170 supplements in our database — Catnip is not one of them. The Galantamine Extended Release 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

Catnip monograph Uses, safety profile, and every drug interaction in one place Galantamine Extended Release supplement interactions Every supplement checked against Galantamine Extended Release, 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 7 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Galantamine Extended Release and Catnip?

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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.