Drug & supplement interaction

Ecdysteroids + Amivantamab-Vmjw

Amivantamab-Vmjw brand name: Rybrevant.

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 Ecdysteroids and Amivantamab-Vmjw 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

Ecdysteroids and Amivantamab-Vmjw

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 Amivantamab-Vmjw and Ecdysteroids 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 Ecdysteroids at all — not against Amivantamab-Vmjw, 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.

Ecdysteroids safety at a glance

Ecdysteroids overall Use caution Short-term use appears generally well tolerated in small studies, but long-term safety is not well established.
Pregnancy Avoid There is not enough safety information, so avoid use during pregnancy.
Breastfeeding Avoid There is not enough safety information, so avoid use while breastfeeding.

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

Still wondering about combining Amivantamab-Vmjw and Ecdysteroids? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Amivantamab-Vmjw’s Own FDA Label Lists

This is not an interaction — none of it involves Ecdysteroids. These are the most notable effects listed in the ADVERSE REACTIONS section of Amivantamab-Vmjw’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. 10 of them are worth acting on rather than waiting out — marked below.

  • A stroke or mini-stroke Worth acting on
  • Muscle weakness Worth acting on
  • A heart attack Worth acting on
  • Blood clots Worth acting on
  • A severe skin reaction Worth acting on
  • A low platelet count Worth acting on
  • Kidney problems Worth acting on
  • Shortness of breath Worth acting on
  • A severe allergic reaction Worth acting on
  • A low white blood cell count Worth acting on

Showing the 10 most notable of 34 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 Amivantamab-Vmjw. Read the label on DailyMed › Ecdysteroids’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Ecdysteroids side to compare — that is a limit of the record, not a statement that Ecdysteroids has no side effects.

One more smart check

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

We hold 1 real supplement products containing Ecdysteroids, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Ecdysteroids. Even though Ecdysteroids itself has no known interaction with Amivantamab-Vmjw, 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 Ecdysteroids and Amivantamab-Vmjw 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 Ecdysteroids
Steady interest

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

29 days ago today
Medication Amivantamab-Vmjw
Top half

#1,025 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. Ecdysteroids 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 Ecdysteroids reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Ecdysteroids and Amivantamab-Vmjw 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 Ecdysteroids

What is Ecdysteroids?

  • Muscle building and strength
  • Athletic performance and recovery
  • General "adaptogen" or vitality support
  • Anti-aging and wellness

Ecdysteroids are plant- and insect-derived steroid-like compounds (most notably 20-hydroxyecdysone) marketed mainly to athletes for building muscle. Human evidence is very limited and far weaker than the marketing suggests, and long-term safety is not well studied. Talk to your pharmacist or doctor before using them, and avoid use during pregnancy and breastfeeding.

Roots and aerial parts of certain plants (such as Rhaponticum carthamoides and Spinacia oleracea); also found in some insects · Capsules, tablets, powders, and extracts (often standardized to 20-hydroxyecdysone)

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

Ecdysteroids: dosing

There is no well-established, standardized dose for ecdysteroids. Doses used in research vary, and many products are standardized to a percentage of 20-hydroxyecdysone, but ideal amounts in people are not proven.If you choose to use a product, follow the directions on the label and do not exceed them.

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

Read the full Ecdysteroids monograph & all interactions
Medication

About Amivantamab-vmjw Injection

What Is Amivantamab-vmjw Injection Used For?

Brand name: Rybrevant

Rybrevant (amivantamab-vmjw) is used to treat adults with locally advanced or metastatic non-small cell lung cancer (NSCLC) that carries specific changes (mutations) in the EGFR gene. The exact regimen depends on which mutation is present and whether prior treatment has been received.

Rybrevant is used: in combination with lazertinib as a first-line treatment for NSCLC with EGFR exon 19 deletions or exon 21 L858R mutations; in combination with carboplatin and pemetrexed for those same mutations when the cancer progressed after an EGFR tyrosine kinase inhibitor; in combination with carboplatin and pemetrexed as a first-line treatment for NSCLC with EGFR exon 20 insertion mutations; and as a single agent for NSCLC with exon 20 insertion mutations when the cancer progressed after platinum-based chemotherapy. In every case, patients must first be confirmed to carry the relevant mutation by an FDA-approved test.

See full Amivantamab-vmjw Injection drug information
Keep checking

Other Drugs & Ecdysteroids

Browse every other medication we’ve checked against Ecdysteroids — 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 Ecdysteroids 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 Ecdysteroids list.

See the full Ecdysteroids interactions page
See every supplement checked against Amivantamab-Vmjw, ranked by severity
Evidence & sources

Ecdysteroids References

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

  1. Dietary Supplements for Exercise and Athletic Performance — NIH Office of Dietary Supplements Source
  2. Dietary Supplements — MedlinePlus 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 Ecdysteroids and Amivantamab-Vmjw Together: Common Questions

Is it safe to take Ecdysteroids with Amivantamab-Vmjw?
We do not list a known interaction between Ecdysteroids and Amivantamab-Vmjw. 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.

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

Where next

Keep Exploring

Ecdysteroids monograph Uses, safety profile, and every drug interaction in one place Amivantamab-vmjw Injection drug information The full plain-English guide to this medication Amivantamab-Vmjw supplement interactions Every supplement checked against Amivantamab-Vmjw, 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 Amivantamab-Vmjw and Ecdysteroids?

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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.