Drug & supplement interaction

Chrysin + Mechlorethamine Hydrochloride

Mechlorethamine Hydrochloride brand name: Valchlor.

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

We found no known interaction between Chrysin and Mechlorethamine Hydrochloride 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

Chrysin and Mechlorethamine Hydrochloride

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 Mechlorethamine Hydrochloride and Chrysin 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.

Chrysin safety at a glance

Chrysin overall Use caution Generally seems well tolerated in short-term use, but long-term safety is not well studied.
Pregnancy Avoid Not enough safety information, so it is best avoided during pregnancy.
Breastfeeding Avoid Not enough safety information, so it is best avoided while breastfeeding.

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

Still wondering about combining Mechlorethamine Hydrochloride and Chrysin? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Mechlorethamine Hydrochloride

Interactions in our licensed database are recorded against drug classes, not just single drug names. Mechlorethamine Hydrochloride is filed under 2 classifications — alkylating agents, topical drugs. Chrysin has documented interactions with 9 drug classes — the most serious being anticoagulant/antiplatelet drugs (moderate), aromatase inhibitors (moderate) and contraceptive drugs (moderate) — and none of Mechlorethamine Hydrochloride’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

Chrysin Does Interact With Other Medications

Chrysin has 179 moderate, 179 minor known drug interactions in our database — Mechlorethamine Hydrochloride isn’t one of them. If you take anything else, check it against the full list below.

Moderate 179 Minor 179 No known interaction 2,472 (incl. Mechlorethamine Hydrochloride)
Taking anything else?

Check Another of Your Medications Against Chrysin

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

What to actually watch for

What Mechlorethamine Hydrochloride’s Own FDA Label Lists

This is not an interaction — none of it involves Chrysin. These are the most notable effects listed in the ADVERSE REACTIONS section of Mechlorethamine Hydrochloride’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. One of them is worth acting on rather than waiting out — marked below.

  • A higher chance of infection Worth acting on
  • Itching mentioned in 24.3% of FDA reports for Mechlorethamine Hydrochloride
  • A skin rash

From the ADVERSE REACTIONS section of the FDA label for Mechlorethamine Hydrochloride. Read the label on DailyMed › Where a percentage is shown, it is the share of 2,244 voluntary FDA FAERS reports for Mechlorethamine Hydrochloride that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Chrysin’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Chrysin side to compare — that is a limit of the record, not a statement that Chrysin has no side effects.

Overlapping uses

What Mechlorethamine Hydrochloride Is Prescribed For, and What Chrysin Has Been Studied For

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

Mechlorethamine Hydrochloride is prescribed for: Valchlor (mechlorethamine gel applied to the skin) is approved to treat Stage IA and IB mycosis fungoides-type cutaneous T-cell lymphoma — a slow-growing cancer that primarily affects the skin. It is used in patients who have already received at least one prior skin-directed treatment.

Chrysin has been studied for:

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

    Chrysin for cancer

    Although there has been interest in using oral chrysin for preventing cancer, there is insufficient reliable information about the clinical effects of chrysin for this purpose.

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 Mechlorethamine Hydrochloride on your own; if you are taking Chrysin for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Chrysin or Mechlorethamine Hydrochloride

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Chrysin or Mechlorethamine Hydrochloride, 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 Mechlorethamine Hydrochloride

This page covers Chrysin only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Mechlorethamine Hydrochloride page lists 10 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Acerola (moderate), Alpha-lipoic Acid (moderate), Coenzyme Q10 (moderate), Dimethylsulfoxide (dmso) (moderate) and Rose Hip (moderate).

By severity: 9 moderate · 1 minor.

From our pharmacist’s overview on the Mechlorethamine Hydrochloride page

“Mechlorethamine (Valchlor) is a chemotherapy gel applied to the skin for a form of lymphoma, and the 10 supplements on this page split into two groups. Seven are antioxidants, everyday products like vitamin C and turmeric, which in theory could blunt how well an alkylating chemotherapy drug works.”

Reviewed by 2 · Jul 18, 2026

Open the Mechlorethamine Hydrochloride interaction page

One more smart check

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

We hold 272 real supplement products containing Chrysin, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Chrysin. Even though Chrysin itself has no known interaction with Mechlorethamine Hydrochloride, 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 Chrysin and Mechlorethamine Hydrochloride 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 Chrysin
Top 25%

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

29 days ago today
Medication Mechlorethamine Hydrochloride
Steady interest

#1,672 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 Chrysin reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Chrysin and Mechlorethamine Hydrochloride 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 Chrysin

What is Chrysin?

  • Bodybuilding and testosterone support
  • Anxiety and stress
  • Anti-inflammatory
  • Antioxidant support
  • Prostate health

Chrysin is a plant flavonoid sold mainly as a bodybuilding supplement claimed to raise testosterone or block estrogen, but human studies have not shown these benefits, largely because the body absorbs very little of it. Evidence for its other proposed uses is mostly limited to laboratory and animal research, so its real-world value is unclear. Talk with your pharmacist or doctor before using it.

Flavonoid extracted from plants such as passionflower and from honey and propolis · Capsules, tablets, powders, topical gels

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

Chrysin: dosing

There is no well-established or proven dose for chrysin. Amounts in commercial products vary widely, and because so little is absorbed by the body, the right dose for any benefit is unknown.If you choose to try it, follow the directions on the product label and do not exceed the recommended amount. A pharmacist can help you review the product and decide whether it makes sense for you.

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

Read the full Chrysin monograph & all interactions
Medication

About Mechlorethamine Topical

What Is Mechlorethamine Topical Used For?

Brand name: Valchlor

Valchlor (mechlorethamine gel applied to the skin) is approved to treat Stage IA and IB mycosis fungoides-type cutaneous T-cell lymphoma — a slow-growing cancer that primarily affects the skin. It is used in patients who have already received at least one prior skin-directed treatment.

Most-Reported Side Effects for Mechlorethamine Hydrochloride

From FAERS, the FDA’s public side-effect reporting system (2,244 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Pruritus 322 reports
Application site pruritus 224 reports
Application site erythema 220 reports
Application site pain 218 reports
Erythema 213 reports
See full Mechlorethamine Topical drug information
Keep checking

Other Drugs & Chrysin

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

0Major
179Moderate
179Minor
2,471No known interaction
179 Moderate 179 Minor 2,471 No interaction
Moderate

179 interactions

Showing 60 of 179 moderate interactions — see all 179 on the Chrysin page.

Minor

179 interactions

Showing 60 of 179 minor interactions — see all 179 on the Chrysin page.

No interaction 2,471 drugs checked — show the list

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

Showing the 60 most looked-up of 2,471 medications checked with no known interaction — see the full Chrysin list.

See the full Chrysin interactions page
See every supplement checked against Mechlorethamine Hydrochloride, ranked by severity
Evidence & sources

Chrysin References

The 23 references that drive our Chrysin 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. Galijatovic A, Otake Y, Walle UK, Walle T. Extensive metabolism of the flavonoid chrysin by human Caco-2 and Hep G2 cells. Xenobiotica 1999;29:1241-56. PubMed
  2. Lee H, Yeom H, Kim YG, et al. Structure-related inhibition of human hepatic caffeine N3-demethylation by naturally occurring flavonoids. Biochem Pharmacol 1998;55:1369-75. PubMed
  3. Galijatovic A, Walle UK, Walle T. Induction of UDP-glucuronosyltransferase by the flavonoids chrysin and quercetin in Caco-2 cells. Pharm Res 2000;17:21-6.
  4. Walle UK, Galijatovic A, Walle T. Transport of the flavonoid chrysin and its conjugated metabolites by the human intestinal cell line Caco-2. Biochem Pharmacol 1999;58:431-8. PubMed
  5. Kao YC, Zhou C, Sherman M, et al. Molecular basis of the inhibition of human aromatase (estrogen synthetase) by flavone and isoflavone phytoestrogens: A site-directed mutagenesis study. Environ Health Perspect 1998;106:85-92. PubMed
  6. Jeong HJ, Shin YG, Kim IH, Pezzuto JM. Inhibition of aromatase activity by flavonoids. Arch Pharm Res 1999;22:309-12. PubMed
  7. Walle T, Otake Y, Galijatovic A, et al. Induction of UDP-glucuronosyltransferase UGT1A1 by the flavonoid chrysin in the human hepatoma cell line hep G2. Drug Metab Dispos 2000;28:1077-82. DOI
  8. Walle T, Otake Y, Brubaker JA, et al. Disposition and metabolism of the flavonoid chrysin in normal volunteers. Br J Clin Pharmacol 2001;51:143-6. DOI
  9. Galijatovic A, Otake Y, Walle UK, Walle T. Induction of UDP-glucuronosyltransferase UGT1A1 by the flavonoid chrysin in Caco-2 cells--potential role in carcinogen bioinactivation. Pharm Res 2001;18:374-9. PubMed
  10. Lautraite S, Musonda AC, Doehmer J, et al. Flavonoids inhibit genetic toxicity produced by carcinogens in cells expressing CYP1A2 and CYP1A1. Mutagenesis 2002;17:45-53. PubMed
  11. Han, D. H., Denison, M. S., Tachibana, H., and Yamada, K. Relationship between estrogen receptor-binding and estrogenic activities of environmental estrogens and suppression by flavonoids. Biosci.Biotechnol.Biochem 2002;66(7):1479-1487. PubMed
  12. O'Leary, K. A., de Pascual-Tereasa, S., Needs, P. W., Bao, Y. P., O'Brien, N. M., and Williamson, G. Effect of flavonoids and vitamin E on cyclooxygenase-2 (COX-2) transcription. Mutat.Res 7-13-2004;551(1-2):245-254. PubMed
  13. Woodman, O. L. and Chan, E. C. Vascular and anti-oxidant actions of flavonols and flavones. Clin Exp Pharmacol Physiol 2004;31(11):786-790. PubMed
  14. Simons, A. L., Renouf, M., Hendrich, S., and Murphy, P. A. Human gut microbial degradation of flavonoids: structure-function relationships. J Agric.Food Chem 5-18-2005;53(10):4258-4263. PubMed
  15. Kim, H. J., Lee, S. B., Park, S. K., Kim, H. M., Park, Y. I., and Dong, M. S. Effects of hydroxyl group numbers on the B-ring of 5,7-dihydroxyflavones on the differential inhibition of human CYP 1A and CYP1B1 enzymes. Arch Pharm Res 2005;28(10):1114-1121 PubMed

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 Chrysin and Mechlorethamine Hydrochloride Together: Common Questions

Is it safe to take Chrysin with Mechlorethamine Hydrochloride?
We do not list a known interaction between Chrysin and Mechlorethamine Hydrochloride. 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.
Are Chrysin and Mechlorethamine Hydrochloride 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 Chrysin in each. That is a conversation for your prescriber, especially if Mechlorethamine Hydrochloride is being adjusted to a target.
How was the Chrysin and Mechlorethamine Hydrochloride combination checked?
Interactions in our licensed database are recorded against drug classes. Mechlorethamine Hydrochloride is filed under 2 classifications, and Chrysin has documented interactions with 9 drug classes — none of Mechlorethamine Hydrochloride'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 Chrysin interact with any other medications?
Yes. Chrysin has 358 documented drug interactions in our database — Mechlorethamine Hydrochloride 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 Mechlorethamine Hydrochloride interact with any supplements?
Yes. Mechlorethamine Hydrochloride has documented interactions with 10 supplements in our database — Chrysin is not one of them. The Mechlorethamine Hydrochloride 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

Chrysin monograph Uses, safety profile, and every drug interaction in one place Mechlorethamine Topical drug information The full plain-English guide to this medication Mechlorethamine Hydrochloride supplement interactions Every supplement checked against Mechlorethamine Hydrochloride, 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 23 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Mechlorethamine Hydrochloride and Chrysin?

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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.