Daffodil Drug Interactions, Uses, Effectiveness, Safety & More
What is this page for?
First and foremost: how Daffodil interacts with medications. The heart of this page is the interaction list — every drug Daffodil is known to interact with, and how serious each one is.
But these pages have grown well beyond that into a full monograph — what Daffodil is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy
Check Daffodil against your medication
Add one medicationDrugs that interact with Daffodil
0 medications have a known interaction with Daffodil, graded by severity. Select any drug for the full evidence-based detail.
We don’t currently list any known drug interactions for Daffodil. This doesn’t guarantee none exist — always confirm with your pharmacist before combining supplements with your medications.
What Severity, Likelihood & Evidence Mean
Severity — How Serious It Can Be
- Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
- Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
- Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
- No known interaction. Checked against our sources with nothing documented — not the same as proven safety.
Likelihood — How Well It’s Documented
- Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
- Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
- Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
- Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Where This Data Comes From
- Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
- Each drug listed above links to the full report for that exact Daffodil combination — clinical detail, likelihood, evidence level, and citations.
- Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Daffodil: Uses, Safety & Side Effects
Daffodil is a beautiful but toxic plant that contains alkaloids, including the one used to make the Alzheimer's drug galantamine. It is not safe to take as a homemade supplement, and all parts of the plant—especially the bulb—can cause serious poisoning if eaten. Leave any medicinal use to standardized, regulated medications prescribed by a doctor.
- Scientific name
- Narcissus pseudonarcissus
- Family
- Amaryllidaceae
- Part used
- Bulb, flower, and leaves (source of certain alkaloids)
- Common forms
- Not commonly available as a consumer supplement; the plant is the source of the prescription drug galantamine
- Traditional anti-inflammatory remedy
- Folk use for tumors and skin growths
- Source of galantamine for memory/Alzheimer's
- Antimicrobial folk use
- Topical traditional remedies
Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.
All parts of the daffodil are toxic and should not be eaten or used as a homemade supplement.
When used orally or topically; avoid using.
Read the full breastfeeding detailPregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Overview
The daffodil (Narcissus pseudonarcissus) is a popular spring-flowering bulb plant known for its bright yellow or white trumpet-shaped flowers. It belongs to the Amaryllidaceae family and is grown in gardens across Europe, North America, and many other regions.
While daffodils are valued mainly for their beauty, the plant also contains natural compounds called alkaloids. These compounds have drawn scientific interest. In fact, one alkaloid found in daffodils and related plants is the basis for galantamine, a prescription medicine used for Alzheimer's disease. However, daffodil itself is not a safe dietary supplement, because all parts of the plant are toxic if eaten.
How it works
Daffodils contain a group of compounds called Amaryllidaceae alkaloids, including lycorine and galantamine. These are the chemicals responsible for both the plant's toxicity and its scientific interest.
Galantamine works by blocking an enzyme that breaks down acetylcholine, a brain chemical important for memory. This is why a purified form is used in Alzheimer's care. Other alkaloids like lycorine have shown anti-inflammatory and cell-stopping activity in laboratory studies, but these are mostly test-tube and animal findings.
It is important to understand that the same alkaloids that may have biological activity are also what make the raw plant poisonous. There is no safe, reliable way to get a benefit from eating the plant.
Does Daffodil work?
How to read these evidence grades
Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.
For Daffodil, current evidence isn’t strong enough to rate any specific use. The conditions it has been studied for are listed below.
Also studied for 4 conditions — evidence insufficient to rate
Insufficient Reliable Evidence To Rate Asthma
Although there has been interest in using oral daffodil for asthma, there is insufficient reliable evidence about the clinical effects of daffodil for this purpose.
Insufficient Reliable Evidence To Rate Joint pain
Although there has been interest in using topical daffodil for joint pain, including sprains, there is insufficient reliable evidence about the clinical effects of daffodil for these conditions.
Insufficient Reliable Evidence To Rate Respiratory tract infections
Although there has been interest in using oral daffodil for respiratory tract infections, including bronchitis and pertussis, there is insufficient reliable evidence about the clinical effects of daffodil for these conditions.
Insufficient Reliable Evidence To Rate Wound healing
Although there has been interest in using topical daffodil for wound healing, including burns, there is insufficient reliable evidence about the clinical effects of daffodil for these conditions.
Source & disclaimer. Effectiveness ratings and evidence summaries are provided by Natural Medicines (Therapeutic Research Center) and shown as licensed. Where Natural Medicines hasn’t rated a use, HelloPharmacist’s pharmacists may add their own reviewed rating and evidence (each such entry is labeled). This is educational information, not medical advice — talk with your pharmacist or doctor before starting, stopping, or changing a supplement.
Safety & precautions
All parts of the daffodil are toxic, and the bulb is the most poisonous part. The bulb is sometimes mistaken for an onion, which has caused accidental poisonings. Eating any part can cause serious symptoms.
Daffodil should not be used as a supplement, tea, or homemade remedy. People should also keep bulbs and cut flowers away from children and pets, who may chew on them.
Pregnancy and breastfeeding: Avoid daffodil completely. Because the plant is toxic, it should not be taken in any form while pregnant or nursing. If you need treatment for a medical condition, talk with your doctor or pharmacist about safe, approved options.
Side effects
Swallowing daffodil can cause nausea, vomiting, stomach pain, diarrhea, drooling, and abdominal cramping. In more serious cases it may lead to drowsiness, low blood pressure, an irregular heartbeat, tremors, or convulsions.
Handling the bulbs can also irritate the skin, sometimes called "daffodil itch," causing redness, dryness, or rash. Sap from the stems can irritate the skin and eyes.
If someone swallows part of a daffodil, contact a poison control center or seek medical care right away.
Daffodil: Reported Adverse Effects
Documented safety reports on Daffodil from the evidence-graded Natural Medicines (TRC Healthcare) database, shown word-for-word from the licensed record.
Daffodil is generally regarded as unsafe for use. Any benefits of therapy may not outweigh the risk of toxicity.
Serious Adverse Effects (Rare):
Orally: Irritation and swelling of the mouth, tongue, and throat, and sudden onset of vomiting, diarrhea, and abdominal pain. Large doses have also been reported to cause blurred vision, coma, convulsions, dizziness, headache, hypotension, salivation, sweating, and tremors.
Cluster headache Neurologic/CNS
Orally, large doses of daffodil can cause toxicity, including dizziness, headache, tremors, convulsions, and coma.
Dermatitis Dermatologic
Topically, skin contact with any part of the daffodil plant can cause dermatitis, sometimes referred to as "daffodil itch" or "lily rash".
Orally, large doses of daffodil can cause toxicity, including excessive sweating.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Bruynzeel DP. Bulb dermatitis. Dermatological problems in the flower bulb industries. Contact Dermatitis 1997;37:70-7.
- Bruynzeel DP, de Boer EM, Brouwer EJ, et al. Dermatitis in bulb growers. Contact Dermatitis 1993;29:11-5.
- Matulkova P, Gobin M, Evans M, et al. Gastro-intestinal poisoning due to consumption of daffodils mistaken for vegetables at commercial markets, Bristol, United Kingdom. Clin Toxicol (Phila) 2012;50(8):788-90. doi: 10.3109/15563650.2012.718350.
Diarrhea Gastrointestinal
Orally, daffodil can cause irritation and swelling of the mouth, tongue, and throat, as well as sudden onset of vomiting, diarrhea, and abdominal pain. Vomiting and diarrhea often limit the progression of symptoms, and adults typically recover within 3-4 hours. Large doses of daffodil can cause toxicity, including excessive salivation.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Matulkova P, Gobin M, Evans M, et al. Gastro-intestinal poisoning due to consumption of daffodils mistaken for vegetables at commercial markets, Bristol, United Kingdom. Clin Toxicol (Phila) 2012;50(8):788-90. doi: 10.3109/15563650.2012.718350.
Hypotension Cardiovascular
Orally, large doses of daffodil can cause toxicity, including hypotension.
Adverse-effects data: Natural Medicines, Therapeutic Research Center
Dosing
There is no safe established dose of daffodil as a supplement, and it should not be taken by mouth. Because the whole plant is toxic, no amount can be recommended for self-treatment.
The only proven medical use linked to this plant is the prescription drug galantamine, which is manufactured to a precise, standardized dose and must be prescribed and monitored by a healthcare provider. If you are interested in galantamine or any plant-based remedy, talk with your pharmacist or doctor first.
Daffodil & Pregnancy
Daffodil & Breastfeeding
© 2026 Therapeutic Research Center
Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center
References & further reading
The 5 references that drive our Daffodil 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.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Bruynzeel DP. Bulb dermatitis. Dermatological problems in the flower bulb industries. Contact Dermatitis 1997;37:70-7.
- Bruynzeel DP, de Boer EM, Brouwer EJ, et al. Dermatitis in bulb growers. Contact Dermatitis 1993;29:11-5. PubMed
- Matulkova P, Gobin M, Evans M, et al. Gastro-intestinal poisoning due to consumption of daffodils mistaken for vegetables at commercial markets, Bristol, United Kingdom. Clin Toxicol (Phila) 2012;50(8):788-90. doi: 10.3109/15563650.2012.718350. PubMed
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.
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
Daffodil: Common Questions
What is Daffodil used for, and does it work?
Does Daffodil interact with prescription medications?
How are Daffodil interactions rated?
Is it safe to take Daffodil with my medications?
Where does this Daffodil interaction information come from?
Is Daffodil safe to eat or take as a supplement?
Isn't Daffodil used to make an Alzheimer's medicine?
What happens if my child or pet eats a Daffodil?
Can I use Daffodil during pregnancy or breastfeeding?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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