Drug & supplement interaction

Calendula + Avatrombopag Maleate

Avatrombopag Maleate brand name: Doptelet.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Calendula and Avatrombopag Maleate 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 Avatrombopag Maleate states a food rule worth keeping to.

Know someone taking this? Share
Facebook Post Reddit Email
On this page
Interaction report

Calendula and Avatrombopag Maleate

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 Avatrombopag Maleate and Calendula 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.

Calendula safety at a glance

Calendula overall Use caution Generally well tolerated on the skin, but can cause allergic reactions in sensitive people.
Pregnancy Likely Unsafe When used orally; contraindicated due to spermatocide, antiblastocyst, and abortifacient effects. There is insufficient reliable information available about the... Read the full pregnancy detail
Breastfeeding Use caution Reliable safety information is lacking, so it is best to avoid oral use unless your doctor approves.

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Avatrombopag Maleate and Calendula? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Avatrombopag Maleate

Interactions in our licensed database are recorded against drug classes, not just single drug names. Avatrombopag Maleate is filed under 2 classifications — p-glycoprotein substrates, oral drugs. Calendula has documented interactions with 1 drug class — the most serious being cns depressants (minor) — and none of Avatrombopag Maleate’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

Calendula Does Interact With Other Medications

Calendula has 248 minor known drug interactions in our database — Avatrombopag Maleate isn’t one of them. If you take anything else, check it against the full list below.

Minor 248 No known interaction 2,582 (incl. Avatrombopag Maleate)
Taking anything else?

Check Another of Your Medications Against Calendula

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

What to actually watch for

What Calendula Itself Has Been Linked To

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

  • A severe allergic reaction / Hives / An allergic reaction Worth acting on Additional detail

    “Orally, calendula can cause allergic reactions. Topically, calendula can cause eczematous allergic reactions. Calendula-specific patch testing is recommended prior to usage to determine allergenic potential. Testing is particularly necessary in individuals sensitive to the Asteraceae/Compositae family. Members of this family include ragweed, chrysanthemums, marigolds, daisies, and many other herbs.”

    Calendula · Natural Medicines adverse-effect record, reported in allergic rhinitis (hay fever).

    4 sources cited
    1. 10691. Reider N, Komericki P, Hausen BM, et al. The seamy side of natural medicines: contact sensitization to arnica (Arnica montana L.) and marigold (Calendula officinalis L.). Contact Dermatitis 2001;45:269-72..
    2. 11458. Paulsen E. Contact sensitization from Compositae-containing herbal remedies and cosmetics. Contact Dermatitis 2002;47:189-98. PubMed
    3. 96647. Madisetti M, Kelechi TJ, Mueller M, Amella EJ, Prentice MA. Feasibility, acceptability, and tolerability of RGN107 in the palliative wound care management of chronic wound symptoms. J Wound Care. 2017;26(Sup1):S25-S34. PubMed
    4. 11152. Gol'dman II. [Anaphylactic shock after gargling with an infusion of Calendula]. Klin Med (Mosk) 1974;52:142-3.
  • Itching Additional detail

    “Topically, a preparation containing calendula powder 0.1% resulted in inflammation around the wound to which it was applied. Burning sensation, itching, redness, and scaling were reported rarely in patients applying a combination of calendula, licorice, and snail secretion filtrate to the face. The specific role of calendula is unclear.”

    Calendula · Natural Medicines adverse-effect record, reported in pruritus.

    2 sources cited
    1. 96647. Madisetti M, Kelechi TJ, Mueller M, Amella EJ, Prentice MA. Feasibility, acceptability, and tolerability of RGN107 in the palliative wound care management of chronic wound symptoms. J Wound Care. 2017;26(Sup1):S25-S34. PubMed
    2. 110322. Puaratanaarunkon T, Washrawirul C, Chuenboonngarm N, Noppakun N, Asawanonda P, Kumtornrut C. Efficacy and safety of a facial serum containing snail secretion filtrate, Calendula officinalis, and Glycyrrhiza glaba root extract in the treatment of maskne: A

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

Special populations

Calendula in Pregnancy & Breastfeeding

Pregnancy Likely Unsafe

When used orally; contraindicated due to spermatocide, antiblastocyst, and abortifacient effects. There is insufficient reliable information available about the safety of calendula when used topically during pregnancy.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

How to take them

Some Avatrombopag Maleate Products Have a Food Rule — Calendula Should Not Break It

At least one FDA label for a product containing Avatrombopag Maleate says to take it with food. If you take Calendula on an empty stomach out of habit, keep them separate — and take Avatrombopag Maleate 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 Avatrombopag Maleate 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 DOPTELET tablets and DOPTELET SPRINKLE with food.

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

Overlapping uses

What Avatrombopag Maleate Is Prescribed For, and What Calendula Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Avatrombopag Maleate is a prescription medicine with approved uses on its FDA label. Calendula is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Avatrombopag Maleate is prescribed for: Avatrombopag treats thrombocytopenia (a low platelet count that raises bleeding risk) in three groups of patients. Doptelet tablets are used in adults with chronic liver disease who need their platelet count raised before a medical procedure, and in adults with chronic immune thrombocytopenia (ITP) whose platelet count has not responded well enough to earlier treatments. Doptelet tablets are also used in children aged 6 years and older with persistent or chronic ITP who have not responded to prior treatment. Doptelet Sprinkle (oral granules) is specifically indicated for children aged 1 year to less than 6 years with persistent or chronic ITP who have not responded adequately to a previous treatment.

Calendula has been studied for:

  • Liver disease studied, not established Calendula has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Calendula for liver disease

    Although there is interest in using oral calendula for liver disease, there is insufficient reliable information about the clinical effects of calendula for this condition.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Avatrombopag Maleate on your own; if you are taking Calendula for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Calendula or Avatrombopag Maleate

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Calendula or Avatrombopag Maleate, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Avatrombopag Maleate

This page covers Calendula only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Avatrombopag Maleate page lists 54 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), St. John's Wort (major), Bitter Melon (moderate), Black Pepper (moderate) and Bulbine Natalensis (moderate).

By severity: 2 major · 35 moderate · 17 minor.

From our pharmacist’s overview on the Avatrombopag Maleate page

“Avatrombopag maleate (Doptelet) exists to raise a low platelet count, so anything that drags its blood level down invites the bleeding risk it was prescribed to prevent. I would handle this list of 54 supplements with real care, and the two rated major come first.”

Reviewed by 2 · Jul 18, 2026

Open the Avatrombopag Maleate interaction page

One more smart check

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

We hold 214 real supplement products containing Calendula, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Calendula. Even though Calendula itself has no known interaction with Avatrombopag Maleate, 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 Calendula and Avatrombopag Maleate 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 Calendula
Top half

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

29 days ago today
Medication Avatrombopag Maleate
Top 25%

#575 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 Calendula reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Calendula and Avatrombopag Maleate records this page draws on were last updated July 11, 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 Calendula

What is Calendula?

Calendula
  • Minor wounds and skin healing
  • Skin inflammation and irritation
  • Diaper rash
  • Mouth and throat inflammation
  • Soothing dry or chapped skin

Calendula is a flowering plant whose petals are used mainly in skin creams, oils, and ointments to soothe minor irritation and support wound healing. Some early research is promising for skin and mouth uses, but the overall evidence is limited. It is generally well tolerated on the skin, but people allergic to ragweed, daisies, or marigolds should be cautious.

Calendula officinalis · Asteraceae · Flowers (petals/florets) · Topical creams, ointments, gels, oils, tinctures, teas, mouth rinses

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

Calendula: dosing

There is no official, standardized dose for calendula. The amount used depends on the product and how it is being used, such as a cream, oil, tincture, or tea.The best approach is to follow the directions on the product label and to choose products from reputable brands.

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

Read the full Calendula monograph & all interactions
Medication

About Avatrombopag

What Is Avatrombopag Used For?

Brand name: Doptelet

Avatrombopag treats thrombocytopenia (a low platelet count that raises bleeding risk) in three groups of patients. Doptelet tablets are used in adults with chronic liver disease who need their platelet count raised before a medical procedure, and in adults with chronic immune thrombocytopenia (ITP) whose platelet count has not responded well enough to earlier treatments. Doptelet tablets are also used in children aged 6 years and older with persistent or chronic ITP who have not responded to prior treatment.

Doptelet Sprinkle (oral granules) is specifically indicated for children aged 1 year to less than 6 years with persistent or chronic ITP who have not responded adequately to a previous treatment.

See full Avatrombopag drug information
Keep checking

Other Drugs & Calendula

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

0Major
0Moderate
248Minor
2,581No known interaction
248 Minor 2,581 No interaction
Minor

248 interactions

Showing 60 of 248 minor interactions — see all 248 on the Calendula page.

No interaction 2,581 drugs checked — show the list

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

Showing the 60 most looked-up of 2,581 medications checked with no known interaction — see the full Calendula list.

See the full Calendula interactions page
See every supplement checked against Avatrombopag Maleate, ranked by severity
Evidence & sources

Calendula References

The 9 references that drive our Calendula 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.

  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  2. Reider N, Komericki P, Hausen BM, et al. The seamy side of natural medicines: contact sensitization to arnica (Arnica montana L.) and marigold (Calendula officinalis L.). Contact Dermatitis 2001;45:269-72..
  3. Gol'dman II. [Anaphylactic shock after gargling with an infusion of Calendula]. Klin Med (Mosk) 1974;52:142-3.
  4. Paulsen E. Contact sensitization from Compositae-containing herbal remedies and cosmetics. Contact Dermatitis 2002;47:189-98. PubMed
  5. Bojadjiev C. On the sedative and hypotensive effect of preparations from the plant Calendula officinalis. Nauch Trud Visshi Med Inst Sof 1964;43:15-20.
  6. Samochowiec L. Pharmacological study of saponosides from Aralia mandshurica Rupr. et Maxim and Calendula officinalis L. Herba Pol. 1983;29:151-155.
  7. Madisetti M, Kelechi TJ, Mueller M, Amella EJ, Prentice MA. Feasibility, acceptability, and tolerability of RGN107 in the palliative wound care management of chronic wound symptoms. J Wound Care. 2017;26(Sup1):S25-S34. PubMed
  8. Final Assessment report on Calendula officinalis L., flos. European Medicines Agency: Committee on Herbal Medicinal Products (HMPC). 2018. EMA/HMPC/603409/2017. Available at: https://www.ema.europa.eu/en/documents/herbal-report/final-assessment-report-cal
  9. Puaratanaarunkon T, Washrawirul C, Chuenboonngarm N, Noppakun N, Asawanonda P, Kumtornrut C. Efficacy and safety of a facial serum containing snail secretion filtrate, Calendula officinalis, and Glycyrrhiza glaba root extract in the treatment of maskne: A

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 Calendula and Avatrombopag Maleate Together: Common Questions

Is it safe to take Calendula with Avatrombopag Maleate?
We do not list a known interaction between Calendula and Avatrombopag Maleate. 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 Calendula and Avatrombopag Maleate at the same time of day?
At least one FDA label for a product containing Avatrombopag Maleate says to take it with food. If you take Calendula on an empty stomach out of habit, keep them separate and take Avatrombopag Maleate with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Avatrombopag Maleate products can differ — so check the directions on your own box. This is about absorption, not an interaction.
Are Calendula and Avatrombopag Maleate used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Calendula in each. That is a conversation for your prescriber, especially if Avatrombopag Maleate is being adjusted to a target.
How was the Calendula and Avatrombopag Maleate combination checked?
Interactions in our licensed database are recorded against drug classes. Avatrombopag Maleate is filed under 2 classifications, and Calendula has documented interactions with 1 drug class — none of Avatrombopag Maleate'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 Calendula interact with any other medications?
Yes. Calendula has 248 documented drug interactions in our database — Avatrombopag Maleate 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 Avatrombopag Maleate interact with any supplements?
Yes. Avatrombopag Maleate has documented interactions with 54 supplements in our database — Calendula is not one of them. The Avatrombopag Maleate 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

Calendula monograph Uses, safety profile, and every drug interaction in one place Avatrombopag drug information The full plain-English guide to this medication Avatrombopag Maleate supplement interactions Every supplement checked against Avatrombopag Maleate, 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 9 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Avatrombopag Maleate and Calendula?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.