Drug & supplement interaction

Atlantic Cedar + Fosaprepitant

Fosaprepitant brand names: Emend Injection, Focinvez.

No Known Interaction

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

The bottom line No known interaction

We found no known interaction between Atlantic Cedar and Fosaprepitant 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

Atlantic Cedar and Fosaprepitant

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 Fosaprepitant and Atlantic Cedar 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 Atlantic Cedar at all — not against Fosaprepitant, 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.

Atlantic Cedar safety at a glance

Atlantic Cedar overall Use caution Generally used topically in diluted form; the undiluted oil can irritate skin and should not be taken by mouth.

Pregnancy Avoid Not enough safety data, so it is best avoided during pregnancy.

Breastfeeding Avoid Safety has not been established, so avoid use while breastfeeding.

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

Still wondering about combining Fosaprepitant and Atlantic Cedar? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

What to actually watch for

What Fosaprepitant’s Own FDA Label Lists

This is not an interaction — none of it involves Atlantic Cedar. These are the most notable effects listed in the ADVERSE REACTIONS section of Fosaprepitant’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. 9 of them are worth acting on rather than waiting out — marked below.

Blood clots Worth acting on
A severe skin reaction Worth acting on
A low platelet count Worth acting on
Anemia Worth acting on
A severe allergic reaction Worth acting on
Hives Worth acting on
A low white blood cell count Worth acting on
A higher chance of infection Worth acting on
An allergic reaction Worth acting on
Pain in an arm or leg

Showing the 10 most notable of 19 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 Fosaprepitant. Read the label on DailyMed › Where a percentage is shown, it is the share of 13,671 voluntary FDA FAERS reports for Fosaprepitant that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Atlantic Cedar’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Atlantic Cedar side to compare — that is a limit of the record, not a statement that Atlantic Cedar has no side effects.

Everything else you take

See Every Supplement That Interacts With Fosaprepitant

This page covers Atlantic Cedar only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Fosaprepitant page lists 141 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Grapefruit (major), St. John's Wort (major), Acacia Rigidula (moderate), Adrafinil (moderate) and African Wild Potato (moderate).

By severity: 2 major · 109 moderate · 30 minor.

From our pharmacist’s overview on the Fosaprepitant page

“Fosaprepitant (Emend Injection, Focinvez) is the IV drug that keeps chemotherapy from making you sick, so anything that undercuts it costs you real comfort, and I would treat this list with genuine care before adding a supplement to it. Nearly all 141 entries hinge on one liver enzyme, CYP3A4, and the traffic runs both ways, since some…”

Reviewed by 2 · Jul 18, 2026

Open the Fosaprepitant interaction page

One more smart check

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

We hold 2 real supplement products containing Atlantic Cedar, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Atlantic Cedar. Even though Atlantic Cedar itself has no known interaction with Fosaprepitant, 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 Atlantic Cedar and Fosaprepitant 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 Atlantic Cedar

Steady interest

#1,112 of 1,452 supplements looked up here in the last 7 days

29 days ago today

Medication Fosaprepitant

Steady interest

#1,536 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 Atlantic Cedar reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Atlantic Cedar and Fosaprepitant 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 Dr. Brian Staiger, PharmD, BCPS.

Supplement

About Atlantic Cedar

What is Atlantic Cedar?

Hair loss (alopecia areata)
Insect repellent
Antimicrobial and antifungal
Aromatherapy and relaxation
Fragrance in cosmetics and perfumes

Atlantic cedar (Cedrus atlantica) is a tree whose wood and essential oil are used in traditional medicine, mainly applied to the skin and scalp or used as a scent. Human evidence for its health benefits is very limited, and the oil should be used diluted and never swallowed. Talk to a pharmacist or doctor before using it, especially if you are pregnant, breastfeeding, or treating a child.

Cedrus atlantica · Pinaceae · Wood and essential oil · Essential oil, topical preparations, aromatherapy products, cosmetics and soaps

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

Atlantic Cedar: dosing

There is no established standard dose for Atlantic cedar. It is not meant to be taken by mouth, and most use is topical or as a scent.If you use a product containing the oil, follow the directions on the label and dilute the essential oil in a carrier oil before applying it to skin.

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

Read the full Atlantic Cedar monograph & all interactions

Medication

About Fosaprepitant

Most-Reported Side Effects for Fosaprepitant

From FAERS, the FDA’s public side-effect reporting system (13,671 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Nausea 1,478 reports

Dyspnea 1,268 reports

Fever 1,129 reports

Diarrhea 1,111 reports

Vomiting 1,081 reports

Keep checking

Other Drugs & Atlantic Cedar

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

See the full Atlantic Cedar interactions page

See every supplement checked against Fosaprepitant, ranked by severity

Evidence & sources

Atlantic Cedar References

The 1 references that drive our Atlantic Cedar 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.

Hay IC, Jamieson M, Ormerod AD. Randomized trial of aromatherapy. Successful treatment for alopecia areata. Arch Dermatol 1998;134:1349-52. 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 Atlantic Cedar and Fosaprepitant Together: Common Questions

Is it safe to take Atlantic Cedar with Fosaprepitant?

We do not list a known interaction between Atlantic Cedar and Fosaprepitant. 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.

Does Fosaprepitant interact with any supplements?

Yes. Fosaprepitant has documented interactions with 141 supplements in our database — Atlantic Cedar is not one of them. The Fosaprepitant 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

Atlantic Cedar monograph Uses, safety profile, and every drug interaction in one place Fosaprepitant supplement interactions Every supplement checked against Fosaprepitant, 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 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Fosaprepitant and Atlantic Cedar?

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.