Drug & supplement interaction

Rose Hip + Dactinomycin

Dactinomycin brand names: Cosmegen, Cosmegan.

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Rose Hip has a moderate interaction with Dactinomycin. Theoretically, the antioxidant effects of rose hip might reduce the effectiveness of antitumor antibiotics.

Read the full interaction report
SeverityModerate
LikelihoodPossible
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Rose Hip and Dactinomycin

Here is the interaction we found between these two, with the evidence behind it.

Moderate

ANTITUMOR ANTIBIOTICS

Why this applies to Dactinomycin

Dactinomycin falls under ANTITUMOR ANTIBIOTICS — the group Rose Hip interacts with.

Theoretically, the antioxidant effects of rose hip might reduce the effectiveness of antitumor antibiotics.
Rose hip contains the antioxidant vitamin C. There is concern that antioxidants might reduce the activity of chemotherapy drugs that generate free radicals, such as antitumor antibiotics. In contrast, other researchers theorize that antioxidants might make antitumor antibiotic chemotherapy more effective by reducing oxidative stress that could interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effects, if any, antioxidants such as vitamin C have on antitumor antibiotic chemotherapy.
Severity Moderate Likelihood Possible Evidence D

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.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the thinking behind this one. Dactinomycin (Cosmegen) is a chemotherapy drug that partly works by creating free radicals, unstable molecules that help damage and kill cancer cells. Rose hip is loaded with antioxidants like vitamin C, and antioxidants do the opposite job: they mop up free radicals. So in theory, taking concentrated rose hip supplements could blunt some of dactinomycin's punch and make treatment less effective.

I want to be honest though, this is a theoretical concern based on how these compounds behave in the lab, not proven in people. Some researchers even argue antioxidants might help. We just don't have solid answers. To be safe, please don't start a rose hip supplement during chemo without checking with your oncology team first. Food amounts are a different story and far less of a worry.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Labriola D, Livingston R. Possible interactions between dietary antioxidants and chemotherapy. Oncology 1999;13:1003-8.
  2. Prasad KN. Rationale for using high-dose multiple dietary antioxidants as an adjunct to radiation therapy and chemotherapy. J Nutr 2004;134:3182S-3S. PubMed
  3. Conklin KA. Cancer chemotherapy and antioxidants. J Nutr 2004;134:3201S-3204S. PubMed

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction 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.
  • PossibleInteraction 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.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Rose Hip Also Interacts With Other Medications

Rose Hip has 212 moderate known drug interactions in our database — the Dactinomycin one above is one of them. If you take anything else, check it against the full list below.

Moderate 212 No known interaction 2,618 (incl. Dactinomycin)
Taking anything else?

Check Another of Your Medications Against Rose Hip

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

Everything else you take

See Every Supplement That Interacts With Dactinomycin

This page covers Rose Hip only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Dactinomycin page lists 6 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Acerola (moderate), Alpha-lipoic Acid (moderate), Turmeric (moderate), Vitamin C (moderate) and Vitamin E (moderate).

By severity: 6 moderate.

From our pharmacist’s overview on the Dactinomycin page

“Every supplement flagged against dactinomycin (Cosmegen) tells the same story. This chemotherapy drug works partly by generating free radicals inside cancer cells, and each ingredient on this page is an antioxidant, vitamin C and vitamin E among them, plus turmeric and a couple of vitamin C rich botanicals.”

Reviewed by 2 · Jul 18, 2026

Open the Dactinomycin interaction page

One more smart check

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

We hold 273 real supplement products containing Rose Hip, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Rose Hip. Your product may carry other ingredients that interact with Dactinomycin too, on top of Rose Hip — and those would not show on this page. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Rose Hip and Dactinomycin 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 Rose Hip
Top 25%

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

29 days ago today
Medication Dactinomycin
Top half

#770 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.

Supplement

About Rose Hip

What is Rose Hip?

Rose Hip
  • Joint pain and osteoarthritis
  • Colds and flu
  • Source of vitamin C
  • Digestive complaints
  • Anti-inflammatory support

Rose hip is the vitamin C–rich fruit of the wild rose, used traditionally for colds and joint pain. A standardized rose hip powder has some research support for easing osteoarthritis symptoms, but evidence for most other uses is limited. It is generally well tolerated as a food, but talk with your pharmacist or doctor before using it as a supplement.

Read the full Rose Hip monograph & all interactions
Medication

About Dactinomycin

What Is Dactinomycin Used For?

Brand names: Cosmegen, Cosmegan

Dactinomycin is used to treat a range of cancers in both adults and children. These include Wilms tumor (a kidney cancer), rhabdomyosarcoma (a soft-tissue cancer), Ewing sarcoma (a bone and soft-tissue cancer), and metastatic nonseminomatous testicular cancer. For each of these, it is used as part of a multi-drug chemotherapy regimen.

It is also used in post-menarchal patients (those who have had their first period) with gestational trophoblastic neoplasia — a tumor that grows from pregnancy tissue — either alone or in combination with other drugs. In adults, it can be used as part of a regional perfusion procedure to treat locally recurrent or locoregional solid tumors.

See full Dactinomycin drug information
Keep checking

Other Drugs & Rose Hip

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

0Major
212Moderate
0Minor
2,617No known interaction
212 Moderate 2,617 No interaction
Moderate

212 interactions

Showing 60 of 212 moderate interactions — see all 212 on the Rose Hip page.

No interaction 2,617 drugs checked — show the list

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

Showing the 60 most looked-up of 2,617 medications checked with no known interaction — see the full Rose Hip list.

See the full Rose Hip interactions page
See every supplement checked against Dactinomycin, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

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

Keep exploring
Rose Hip monograph › Uses, safety, and every drug interaction in one place Dactinomycin supplement interactions › Every supplement checked against Dactinomycin, ranked by severity Dactinomycin drug information › The full plain-English guide to this medication Supplement interaction checker › Check any supplement or product against your medications Browse medications A–Z › Every drug we've checked against herbs & supplements Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Rose Hip and Dactinomycin Together: Common Questions

Can you take Rose Hip with Dactinomycin?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
How serious is the Rose Hip and Dactinomycin interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Still Have a Question About Dactinomycin and Rose Hip?

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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.