Drug & supplement interaction

Duckweed + Ethosuximide

Ethosuximide brand name: Zarontin.

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

We found no known interaction between Duckweed and Ethosuximide 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.

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Interaction report

Duckweed and Ethosuximide

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 Ethosuximide and Duckweed 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 Duckweed at all — not against Ethosuximide, 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.

Duckweed safety at a glance

Duckweed overall Use caution Generally considered a food in some cultures, but supplement quality and water contamination are real concerns.
Pregnancy Avoid There is not enough reliable safety information, so avoidance is the safer choice.
Breastfeeding Avoid Safety during breastfeeding has not been established, so avoid it.

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

Still wondering about combining Ethosuximide and Duckweed? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Ethosuximide’s Own FDA Label Lists

This is not an interaction — none of it involves Duckweed. These are the most notable effects listed in the ADVERSE REACTIONS section of Ethosuximide’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 9 of them are worth acting on rather than waiting out — marked below.

  • Unsteadiness Worth acting on
  • Hallucinations Worth acting on
  • A severe skin reaction Worth acting on
  • Low mood Worth acting on
  • A low platelet count Worth acting on
  • Hives Worth acting on
  • A low white blood cell count Worth acting on
  • Bleeding or bruising Worth acting on
  • An allergic reaction Worth acting on
  • A change in sex drive

Showing the 10 most notable of 22 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Ethosuximide. Read the label on DailyMed › Where a percentage is shown, it is the share of 2,490 voluntary FDA FAERS reports for Ethosuximide that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Duckweed’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Duckweed side to compare — that is a limit of the record, not a statement that Duckweed has no side effects.

Everything else you take

See Every Supplement That Interacts With Ethosuximide

This page covers Duckweed only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ethosuximide page lists 226 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: 1,4-butanediol (major), Activated Charcoal (major), Beer (major), Gamma-hydroxybutyrate (ghb) (major) and Grapefruit (major).

By severity: 9 major · 179 moderate · 38 minor.

From our pharmacist’s overview on the Ethosuximide page

“Ethosuximide (Zarontin) prevents absence seizures, and a steady blood level is what keeps them away, so I treat this list of 226 interacting supplements and herbs with real care, especially the nine rated major. More than half of the entries can change how the liver clears the drug; grapefruit can raise its level while St.”

Reviewed by 2 · Jul 18, 2026

Open the Ethosuximide interaction page

One more smart check

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

We hold 6 real supplement products containing Duckweed, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Duckweed. Even though Duckweed itself has no known interaction with Ethosuximide, 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 Duckweed and Ethosuximide 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 Duckweed
Steady interest

#1,054 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Ethosuximide
Steady interest

#2,341 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. Duckweed 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 Duckweed reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Duckweed and Ethosuximide 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.
Data structure & sourcing designed and verified by .
Supplement

About Duckweed

What is Duckweed?

  • Plant-based protein source
  • Source of vitamins and minerals
  • Traditional remedy for fever and inflammation
  • Skin conditions and rashes
  • General nutrition and wellness

Duckweed is a tiny floating water plant being studied as a nutrient-dense, plant-based protein and food source. Human evidence for any specific health benefit is very limited, and safety depends heavily on the plant being grown in clean, uncontaminated water. Talk to a pharmacist or doctor before using it as a supplement.

Lemnaceae · Whole plant (fronds) · Powder, capsules, tablets, dried whole plant, protein supplements, traditional decoctions

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

Duckweed: dosing

There is no official, standardized dose for duckweed supplements. The right amount has not been established in clinical research, and products vary widely in concentration and form.If you choose to use a duckweed product, follow the directions on the label and do not exceed the recommended amount.

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

Read the full Duckweed monograph & all interactions
Medication

About Ethosuximide

What Is Ethosuximide Used For?

Brand name: Zarontin

Ethosuximide — sold as Zarontin and also available as generic Ethosuximide — is used to control absence (petit mal) epilepsy. Absence seizures are brief episodes where a person loses awareness for a few seconds, often mistaken for daydreaming.

Both Zarontin and Ethosuximide products (capsule and oral solution forms) are approved for this use. Either may also be used alongside other seizure medicines when a patient has absence seizures together with other types of epilepsy.

Most-Reported Side Effects for Ethosuximide

From FAERS, the FDA’s public side-effect reporting system (2,490 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Seizure 367 reports
Somnolence 157 reports
Generalised tonic-clonic seizure 149 reports
Petit mal epilepsy 118 reports
Treatment failure 116 reports
See full Ethosuximide drug information
Keep checking

Other Drugs & Duckweed

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

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

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

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Duckweed list.

See the full Duckweed interactions page
See every supplement checked against Ethosuximide, ranked by severity
Evidence & sources

Duckweed References

The 2 sources that drive our Duckweed monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Duckweed is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Dietary Supplements: What You Need to Know — NIH Office of Dietary Supplements Source
  2. Using Dietary Supplements Wisely — NIH NCCIH 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.

Pharmacist Counseling Corner

Taking Duckweed and Ethosuximide Together: Common Questions

Is it safe to take Duckweed with Ethosuximide?
We do not list a known interaction between Duckweed and Ethosuximide. 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.
Does Ethosuximide interact with any supplements?
Yes. Ethosuximide has documented interactions with 226 supplements in our database — Duckweed is not one of them. The Ethosuximide 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

Duckweed monograph Uses, safety profile, and every drug interaction in one place Ethosuximide drug information The full plain-English guide to this medication Ethosuximide supplement interactions Every supplement checked against Ethosuximide, 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 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Ethosuximide and Duckweed?

Our pharmacists answer your medication & supplement questions — free.

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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.