Drug & supplement interaction

Plum + Tasimelteon

Tasimelteon brand names: Hetlioz, Hetlioz Lq.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated July 2026 · Pair last verified Sep 20, 2026

The bottom line No known interaction

We found no known interaction between Plum and Tasimelteon 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 Tasimelteon states a food rule worth keeping to.

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Interaction report

Plum and Tasimelteon

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 Tasimelteon and Plum 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.

Plum safety at a glance

Plum overall Generally safe Plums and prunes are widely eaten as food and are generally safe in normal amounts.

Pregnancy Use caution Plum as a food is generally fine, but concentrated supplements are not well studied in pregnancy.

Breastfeeding Use caution Eating plums is generally considered fine, but concentrated supplement forms lack safety data.

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

Still wondering about combining Tasimelteon and Plum? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

How we checked

Why No Interaction Is Listed for Tasimelteon

Interactions in our licensed database are recorded against drug classes, not just single drug names. Tasimelteon is filed under 5 classifications — including cytochrome p450 1a2 (cyp1a2) substrates, cytochrome p450 1a2 (cyp1a2) substrates, cns depressants. Plum has documented interactions with 1 drug class — the most serious being anticoagulant/antiplatelet drugs (moderate) — and none of Tasimelteon’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

Plum Does Interact With Other Medications

Plum has 122 moderate known drug interactions in our database — Tasimelteon isn’t one of them. If you take anything else, check it against the full list below.

Moderate 122 No known interaction 2,708 (incl. Tasimelteon)

Taking anything else?

Check Another of Your Medications Against Plum

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

What to actually watch for

What Plum Itself Has Been Linked To

This is not an interaction — nothing below involves Tasimelteon. It is the side-effect record for Plum on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Plum, this list is the first place to look. 2 entries are worth acting on rather than waiting out — marked below.

A bowel blockage Worth acting on Additional detail
“Orally, plum has been reported to cause gastrointestinal issues, including flatulence and diarrhea.

In one case report, small bowel obstruction with impaction in the terminal ileum occurred in a 10-month old infant who consumed a dried plum. This was likely due to the infant being unable to properly chew the plum.

Consumption of plum pits has also caused serious gastrointestinal adverse effects.”

Plum · Natural Medicines adverse-effect record, reported in diarrhea.
6 sources cited

95272. Lever E, Cole J, Scott SM, Emery PW, Whelan K. Systematic review: the effect of prunes on gastrointestinal function. Aliment Pharmacol Ther. 2014;40(7):750-8. PubMed

95276. Hooshmand S, Chai SC, Saadat RL, et al. Comparative effects of dried plum and dried apple on bone in postmenopausal women. Br J Nutr. 2011;106(6):923-30. PubMed

95285. Ibrahim N, Chauhan I, Nikkar-Esfahani A. 'A problematic plum pit in the piping': a case of traumatic oesophageal perforation. BMJ Case Rep. 2016;2016. pii: bcr2015213807. PubMed

95293. Piirainen L, Peuhkuri K, Bäckström K, Korpela R, Salminen S. Prune juice has a mild laxative effect in adults with certain gastrointestinal symptoms. Nutr. Res. 2007;27(8):511-3. DOI

95300. Arjmandi BH, Khalil DA, Lucas EA, et al. Dried plums improve indices of bone formation in postmenopausal women. J Womens Health Gend Based Med. 2002;11(1):61-8. PubMed

95296. Kong MS, Wang KL. A prune-induced small intestinal obstruction: sonographic appearance. J Clin Ultrasound. 1995;23(9):558-60. PubMed
An allergic reaction Worth acting on Additional detail

Recorded for Plum in the same Natural Medicines adverse-effect record shown under A bowel blockage above.
Bloating or gas / Diarrhea Additional detail

Recorded for Plum in the same Natural Medicines adverse-effect record shown under A bowel blockage above.

Everything above comes from the Natural Medicines adverse-effect record for Plum — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Tasimelteon’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Tasimelteon column appears here.

How to take them

Some Tasimelteon Products Have a Food Rule — Plum Should Not Break It

At least one FDA label for a product containing Tasimelteon says to take it on an empty stomach. Most supplements — Plum included — are taken with a meal, so the easy mistake is swallowing both together at breakfast. Where that rule applies, keep Tasimelteon on its own and move Plum to a meal later in the day.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Tasimelteon 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 DOSAGE AND ADMINISTRATION Indicated Population Dosage Form Body Weight Recommended Dosage Non-24 ( 2.2 ) Adults Capsules Not applicable 20 mg one hour prior to bedtime Nighttime sleep disturbances in SMS ( 2.3 ) Patients 16 years of age and older Capsules Not applicable 20 mg one hour prior to bedtime Pediatric Patients 3 to 15 years of age Oral Suspension ≤ 28 kg 0.7 mg/kg one hour before bedti

From the Dosage and Administration section of the FDA label we read for Tasimelteon — where that label names a specific product, the instruction is that product's. See the Tasimelteon drug page ›

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 Tasimelteon

This page covers Plum only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Tasimelteon page lists 218 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 · 166 moderate · 43 minor.

From our pharmacist’s overview on the Tasimelteon page

“Tasimelteon (Hetlioz) resets the body clock in people with non-24-hour sleep-wake disorder, and the sleep aids they often reach for, melatonin and kava among them, sit on an interaction list that deserves real respect. Nine of the 218 ingredients on file rate major, mostly in two directions: sedatives like kava stack drowsiness onto a…”

Reviewed by 2 · Jul 18, 2026

Open the Tasimelteon interaction page

One more smart check

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

We hold 1,682 real supplement products containing Plum, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Plum. Even though Plum itself has no known interaction with Tasimelteon, 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 Plum and Tasimelteon 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 Plum

Top 25%

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

29 days ago today

Medication Tasimelteon

Steady interest

#1,943 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 Plum reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Plum and Tasimelteon 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 Dr. Brian Staiger, PharmD, BCPS.

Supplement

About Plum

What is Plum?

Constipation
Digestive health
Bone health support
Antioxidant source
General nutrition

Plums and their dried form (prunes) are common, nutritious foods that are best known for helping relieve constipation thanks to their fiber and sorbitol content. They are generally safe as food, but eating large amounts can cause gas, bloating, or loose stools. Talk to your pharmacist or doctor before using concentrated supplements, especially if you have a medical condition.

Prunus domestica · Rosaceae · Fruit (fresh and dried, also called prunes); juice · Fresh fruit, dried plums (prunes), juice, powder, capsules

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

Plum: dosing

There is no official standardized dose for plum. As a food, people often eat a small serving of dried plums or drink a small glass of plum juice to help with constipation, then adjust based on how their body responds.For supplements, powders, or capsules, follow the directions on the product label, since strength varies between products.

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

Read the full Plum monograph & all interactions

Medication

About Tasimelteon

What Is Tasimelteon Used For?

Brand names: Hetlioz, Hetlioz Lq

Tasimelteon capsules are approved to treat Non-24-Hour Sleep-Wake Disorder (Non-24) in adults. Non-24 is a condition where the body's internal clock does not align with the normal 24-hour day, causing sleep and wake times to shift continuously.

Hetlioz capsules are also approved to treat nighttime sleep disturbances in Smith-Magenis Syndrome (SMS) in patients 16 years of age and older. Hetlioz LQ oral suspension is approved specifically for nighttime sleep disturbances in SMS in pediatric patients ages 3 to 15 years.

Most-Reported Side Effects for Tasimelteon

From FAERS, the FDA’s public side-effect reporting system (5,770 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Insomnia 728 reports

Middle insomnia 414 reports

Somnolence 408 reports

Headache 386 reports

Nightmare 268 reports

See full Tasimelteon drug information

Keep checking

Other Drugs & Plum

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

0Major

122Moderate

0Minor

2,707No known interaction

122 Moderate 2,707 No interaction

Moderate

122 interactions

Showing 60 of 122 moderate interactions — see all 122 on the Plum page.

No interaction 2,707 drugs checked — show the list

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

Showing the 60 most looked-up of 2,707 medications checked with no known interaction — see the full Plum list.

See the full Plum interactions page

See every supplement checked against Tasimelteon, ranked by severity

Evidence & sources

Plum References

The 10 references that drive our Plum 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.

Lever E, Cole J, Scott SM, Emery PW, Whelan K. Systematic review: the effect of prunes on gastrointestinal function. Aliment Pharmacol Ther. 2014;40(7):750-8. PubMed
Hooshmand S, Chai SC, Saadat RL, et al. Comparative effects of dried plum and dried apple on bone in postmenopausal women. Br J Nutr. 2011;106(6):923-30. PubMed
Ibrahim N, Chauhan I, Nikkar-Esfahani A. 'A problematic plum pit in the piping': a case of traumatic oesophageal perforation. BMJ Case Rep. 2016;2016. pii: bcr2015213807. PubMed
Piirainen L, Peuhkuri K, Bäckström K, Korpela R, Salminen S. Prune juice has a mild laxative effect in adults with certain gastrointestinal symptoms. Nutr. Res. 2007;27(8):511-3. DOI
Kong MS, Wang KL. A prune-induced small intestinal obstruction: sonographic appearance. J Clin Ultrasound. 1995;23(9):558-60. PubMed
Jain M, Pielage P, De-Ryke R. Plum stones: an unusual cause of ileostomy obstruction demonstrated by sonography. J Clin Ultrasound. 1998;26(8):416-7. DOI
Arjmandi BH, Khalil DA, Lucas EA, et al. Dried plums improve indices of bone formation in postmenopausal women. J Womens Health Gend Based Med. 2002;11(1):61-8. PubMed
Santhakumar AB, Kundur AR, Fanning K, Netzel M, Stanley R, Singh I. Consumption of anthocyanin-rich Queen Garnet plum juice reduces platelet activation related thrombogenesis in healthy volunteers. J. Functional Foods. 2015;12:11-22. DOI
Santhakumar AB, Kundur AR, Sabapathy S, Stanley R, Singh I. The potential of anthocyanin-rich Queen Garnet plum juice supplementation in alleviating thrombotic risk under induced oxidative stress conditions. J. Functional Foods. 2015;14:747-57. DOI
Johnson MC, Fisher JK. Plum pit ileus: a case report. Mo Med. 1991;88(10):696-8.

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 Plum and Tasimelteon Together: Common Questions

Is it safe to take Plum with Tasimelteon?

We do not list a known interaction between Plum and Tasimelteon. 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.

Should I take Plum and Tasimelteon at the same time of day?

At least one FDA label for a product containing Tasimelteon says to take it on an empty stomach, and supplements are usually taken with a meal — so taking them together at breakfast is the easy mistake. Where that applies, keep Tasimelteon on its own and move Plum to a meal later in the day. Food instructions belong to the product rather than the ingredient, so check the directions on your own box. This is about absorption, not an interaction.

How was the Plum and Tasimelteon combination checked?

Interactions in our licensed database are recorded against drug classes. Tasimelteon is filed under 5 classifications, and Plum has documented interactions with 1 drug class — none of Tasimelteon'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 Plum interact with any other medications?

Yes. Plum has 122 documented drug interactions in our database — Tasimelteon 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 Tasimelteon interact with any supplements?

Yes. Tasimelteon has documented interactions with 218 supplements in our database — Plum is not one of them. The Tasimelteon 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

Plum monograph Uses, safety profile, and every drug interaction in one place Tasimelteon drug information The full plain-English guide to this medication Tasimelteon supplement interactions Every supplement checked against Tasimelteon, 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 10 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Tasimelteon and Plum?

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.