European Five-finger Grass + Alectinib Hydrochloride
Alectinib Hydrochloride brand name: Alecensa.
We found no known interaction between European Five-finger Grass and Alectinib Hydrochloride 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 Alectinib Hydrochloride states a food rule worth keeping to.
European Five-finger Grass and Alectinib Hydrochloride
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 Alectinib Hydrochloride and European Five-finger Grass 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 Five-finger Grass at all — not against Alectinib Hydrochloride, 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 Five-finger Grass safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Some Alectinib Hydrochloride Products Have a Food Rule — European Five-finger Grass Should Not Break It
At least one FDA label for a product containing Alectinib Hydrochloride says to take it with food. If you take European Five-finger Grass on an empty stomach out of habit, keep them separate — and take Alectinib Hydrochloride 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 Alectinib Hydrochloride 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.
Administer ALECENSA with food.
From the Dosage and Administration section of the FDA label we read for Alectinib Hydrochloride — 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 Alectinib Hydrochloride
This page covers European Five-finger Grass only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Alectinib Hydrochloride page lists 74 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Activated Charcoal (major), Beer (major), Siberian Cocklebur (major), Wine (major) and Alfalfa (moderate).
By severity: 4 major · 60 moderate · 10 minor.
From our pharmacist’s overview on the Alectinib Hydrochloride page
“Alectinib (Alecensa) treats ALK-positive lung cancer, and because your liver already has to tolerate this drug, check this page before adding any supplement, not after. Of the 74 ingredients on file, 38 can add stress to the liver, and three of the four major-rated entries (beer, wine, and Siberian cocklebur) are the clearest examples…”
Reviewed by 2 · Jul 18, 2026
Where European Five-finger Grass and Alectinib Hydrochloride 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.
#1,254 of 1,452 supplements looked up here in the last 7 days
#2,318 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. European Five-finger Grass is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
- Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every European Five-finger Grass reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The European Five-finger Grass and Alectinib Hydrochloride 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.
About European Five-finger Grass
What is European Five-finger Grass?
- Diarrhea
- Sore throat and mouth rinse
- Skin irritation
- Mild inflammation
- Digestive upset
European Five-finger Grass (Potentilla reptans) is a traditional European herb used mainly for diarrhea, sore throat, and minor skin problems, largely because of its tannin content. There is very little high-quality human research to confirm it works for any condition, so use it cautiously and talk to your pharmacist or doctor first.
Potentilla reptans · Rosaceae · Leaves, flowers, and roots (aerial parts and rhizome) · Tea, liquid extract, tincture, dried herb, topical preparations
An interaction check asks whether these two react with each other — it does not ask whether European Five-finger Grass is a good idea for someone in your situation. Here is what our European Five-finger Grass record says about it on its own.
European Five-finger Grass: dosing
There is no standardized, scientifically established dose for European Five-finger Grass. Traditional use most often involved a tea made from the dried leaves or roots, but exact amounts varied widely.If you choose to use a commercial product, follow the directions on the label and do not exceed the recommended amount. Because product strength can vary a lot between brands, it is wise to start low.
From our European Five-finger Grass monograph — the full record covers uses, side effects and every documented interaction.
About Alectinib
What Is Alectinib Used For?
Brand name: Alecensa
Alecensa (alectinib) is used in adults with non-small cell lung cancer (NSCLC) whose tumors have a specific genetic change called ALK-positive (anaplastic lymphoma kinase-positive), confirmed by an FDA-approved test.
Alecensa is used in two situations: as adjuvant treatment — meaning after surgical removal of the tumor — in patients whose tumors were at least 4 cm or had spread to nearby lymph nodes; and as treatment for metastatic NSCLC, meaning cancer that has spread to other parts of the body.
Most-Reported Side Effects for Alectinib Hydrochloride
From FAERS, the FDA’s public side-effect reporting system (7,249 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.
Other Drugs & European Five-finger Grass
Browse every other medication we’ve checked against European Five-finger Grass — 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 Five-finger Grass against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Warfarin ›
- Methylphenidate ›
- Sertraline ›
- Losartan Potassium ›
- Testosterone ›
- Ivermectin ›
- Metoprolol ›
- Aspirin ›
- Rivaroxaban ›
- Acetaminophen ›
- Rosuvastatin ›
- Abemaciclib ›
- Escitalopram ›
- Clopidogrel ›
- Tadalafil ›
- Atorvastatin ›
- Docusate ›
- Tirzepatide ›
- Ibuprofen ›
- Hydroxyurea ›
- Valacyclovir ›
- Methamphetamine ›
- Warfarin Sodium ›
- Semaglutide ›
- Sumatriptan ›
- Prednisone ›
- Lisdexamfetamine ›
- Propranolol ›
- Metformin ›
- Amoxicillin ›
- Lisinopril ›
- Amitriptyline ›
- Bupropion ›
- Methotrexate ›
- Bendamustine ›
- Isotretinoin ›
- Amphetamine ›
- Acyclovir ›
- Amlodipine Besylate ›
- Doxycycline ›
- Fluoxetine ›
- Lamotrigine ›
- Pregabalin ›
- Azithromycin ›
- Acetaminophen, Codeine ›
- Gabapentin ›
- Dextroamphetamine ›
- Quetiapine ›
- Clonazepam ›
- Methylene Blue ›
- Omeprazole ›
- Letrozole ›
- Naproxen ›
- Duloxetine ›
- Buspirone ›
- Citalopram ›
- Ciprofloxacin ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full European Five-finger Grass list.
European Five-finger Grass References
The 2 sources that drive our European Five-finger Grass monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. European Five-finger Grass is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.
- Herbs at a Glance — NIH National Center for Complementary and Integrative Health Source
- Herbs and Supplements — MedlinePlus Source
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 Five-finger Grass and Alectinib Hydrochloride Together: Common Questions
Is it safe to take European Five-finger Grass with Alectinib Hydrochloride?
Should I take European Five-finger Grass and Alectinib Hydrochloride at the same time of day?
Does Alectinib Hydrochloride 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.