European Chestnut + Galantamine Extended Release
Galantamine Extended Release brand name: Razadyne ER.
We found no known interaction between European Chestnut 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.
European Chestnut 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 European Chestnut 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 European Chestnut at all — not against Galantamine Extended Release, 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.
European Chestnut safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Some Galantamine Extended Release Products Have a Food Rule — European Chestnut 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 European Chestnut 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.
See Every Supplement That Interacts With Galantamine Extended Release
This page covers European Chestnut 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
Where European Chestnut 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.
#1,178 of 1,452 supplements looked up here in the last 7 days
#1,673 of 2,830 medications looked up here in the last 7 days
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 European Chestnut reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The European Chestnut 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.
About European Chestnut
What is European Chestnut?
- Coughs and respiratory irritation
- Diarrhea and digestive upset
- Sore throat
- Wound and skin care
- General antioxidant support
European Chestnut is a tree whose leaves and nuts have a long history of use for coughs, diarrhea, and skin care, mostly in traditional folk medicine. High-quality human studies are lacking, so its benefits remain unproven, and it should be used cautiously and discussed with a pharmacist or doctor.
Castanea sativa · Fagaceae · Leaves, nuts (seeds), bark, and flowers · Tea, liquid extract, capsules, honey, and topical preparations
An interaction check asks whether these two react with each other — it does not ask whether European Chestnut is a good idea for someone in your situation. Here is what our European Chestnut record says about it on its own.
European Chestnut: dosing
There is no standardized or well-established medicinal dose for European Chestnut. Products vary widely in strength and in which part of the plant they use.If you choose to use a chestnut product, follow the directions on the label and do not exceed the recommended amount.
From our European Chestnut monograph — the full record covers uses, side effects and every documented interaction.
Other Drugs & European Chestnut
Browse every other medication we’ve checked against European Chestnut — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
No interaction 2,829 drugs checked — show the list
We also checked European Chestnut against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Testosterone ›
- Losartan Potassium ›
- Ivermectin ›
- Metoprolol ›
- Rivaroxaban ›
- Aspirin ›
- Rosuvastatin ›
- Acetaminophen ›
- Escitalopram ›
- Abemaciclib ›
- Clopidogrel ›
- Tadalafil ›
- Atorvastatin ›
- Docusate ›
- Tirzepatide ›
- Valacyclovir ›
- Ibuprofen ›
- Methamphetamine ›
- Hydroxyurea ›
- Warfarin Sodium ›
- Semaglutide ›
- Sumatriptan ›
- Prednisone ›
- Propranolol ›
- Lisdexamfetamine ›
- Metformin ›
- Amoxicillin ›
- Lisinopril ›
- Bupropion ›
- Amitriptyline ›
- Methotrexate ›
- Bendamustine ›
- Acyclovir ›
- Doxycycline ›
- Amphetamine ›
- Fluoxetine ›
- Isotretinoin ›
- Lamotrigine ›
- Pregabalin ›
- Azithromycin ›
- Acetaminophen, Codeine ›
- Gabapentin ›
- Amlodipine Besylate ›
- Dextroamphetamine ›
- Clonazepam ›
- Methylene Blue ›
- Omeprazole ›
- Quetiapine ›
- Letrozole ›
- Duloxetine ›
- Naproxen ›
- Buspirone ›
- Citalopram ›
- Ciprofloxacin ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full European Chestnut list.
European Chestnut References
The 1 references that drive our European Chestnut 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.
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
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.
Taking European Chestnut and Galantamine Extended Release Together: Common Questions
Is it safe to take European Chestnut with Galantamine Extended Release?
Should I take European Chestnut and Galantamine Extended Release at the same time of day?
Does Galantamine Extended Release interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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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.