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Dietary supplement

Eastern Red Cedar Ingredients & Drug Interactions

by Hawaii Pharm

Eastern Red Cedar label
See full label image
Liquid Category: Botanical
Most serious interaction: Minor
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Eastern Red Cedar against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Minor

Eastern Red Cedar is a dietary supplement by Hawaii Pharm with 1 active ingredient. Its ingredients are commonly taken for insect repellent, aromatherapy and relaxation, skin and minor wound care (topical, traditional).Based on those ingredients, 49 medications have a known interaction with it, the most serious rated minor. The ingredients most likely to interact are Eastern Red Cedar Chip Extract, Dry. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Eastern Red Cedar by Hawaii Pharm

Ask about any prescription or over-the-counter medication and we check it for interactions with Eastern Red Cedar by Hawaii Pharm — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Eastern Red Cedar by Hawaii Pharm

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: Eastern Red Cedar Chip Extract, Dry. It's derived from the wood chips of the Eastern red cedar tree and typically used for its aroma or topical application.

The inactive ingredients are alcohol, water, and glycerin — these are the carriers and solvents that make the liquid form work.

Does it work?

Couldn't assess
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not assessable

This is a single-ingredient Eastern Red Cedar product and its label doesn't state a use — see Eastern Red Cedar's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

We don't hold effectiveness ratings for Eastern Red Cedar Chip Extract in our data, so we can't tell you what the evidence says it does or doesn't do. If you're thinking about using this for a specific purpose, ask your pharmacist what the research actually supports.

The evidence, ingredient by ingredient Eastern Red Cedar

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Eastern red cedar oil is generally well tolerated when applied to skin — clinical studies show it doesn't cause skin sensitization or irritation in most people. However, if you swallow it, overdose can cause stomach burning, vomiting, and in severe cases convulsions and coma.

Topically, allergic reactions and irritation are possible in some individuals. During pregnancy, the safety data advise against use — cedar oils may be irritating and safety hasn't been established.

There isn't enough information to know whether it's safe while breastfeeding, so talk with your pharmacist or doctor for personalized advice. Human safety data overall are limited, especially for oral use.

Side effects, ingredient by ingredient Eastern Red Cedar

Meds to double-check

Minor interactions only
Known Interaction Concern · database check
Minor only

Only Minor-severity interactions are documented for these ingredients.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Eastern Red Cedar.
  • The most serious interaction on file is rated Minor.
  • For scale: 49 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

If you take barbiturate medications (sedatives or sleep aids), double-check with your pharmacist before starting this product. The essential oil may speed up how your body breaks down these drugs and reduce their effect.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Only minor medication interactions are documented, and safety information is well characterized.

If you're using this for aroma or topical application and don't take barbiturate medications, it's worth a quick check with the tool below. If you take any sedatives or sleep aids, or if you're pregnant or breastfeeding, talk with your pharmacist first — the safety data here are limited.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Jul 24, 2025.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Eastern Red Cedar, straight from the product label.

Brand Hawaii Pharm
Barcode (UPC) 840253619518
Net contents 4 Fluid Ounce(s); 120 mL
Market status On market
Date entered into DSLD Jul 24, 2025
DSLD ID 331860
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Eastern Red Cedar by Hawaii Pharm, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
0.7 mL
Maximum serving Sizes:
1 mL
Servings per container
120
UPC/BARCODE
840253619518
IngredientAmount% DV
Eastern Red Cedar Chip Extract, Dry983 mg--

Other ingredients: Alcohol, Water, Glycerin

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Brand IP Statement(s)

Hawaii Pharm Herbal Extract Highest Quality Since 2008

Suggested/Recommended/Usage/Directions

Suggested use: Shake well before using. For adults add about 20-30 drops (0.7-1ml, one full squeeze of the dropper bulb) to some juice or water, up to 4 times a day.

Precautions

Warning: We recommend to seek expert medical advice before taking. May affect the ability to drive and operate machinery. May have contraindications, can cause side effects and adverse reactions. Do not use if seal is broken or missing. Do not use if seal is broken or missing.

Consult your physician before giving to children under 18, during pregnancy, if nursing or taking medications. Keep out of the reach of children!

Consult your physician before giving to children under 18, during pregnancy, if nursing or taking medications.

Do not use if you are allergic to any ingredients.

Storage

Store in a cool dry place.

Seals/Symbols

cGMP Made In compliance with cGMP 21 CFR 111 in an FDA registered and inspected facility.

USA Made in United States of America

FDA Disclaimer Statement

This product has not been evaluated by the FDA and is not intended to diagnose, treat, cure or prevent any disease.

General Statements

Scan this QR code to get more info or reorder www.hawaiipharm.com

Formula

Juniperus virginiana Only natural ingredients Organic Alcohol Based

Formulation

All the raw materials are gluten-free by their nature No artificial colors, flavors, or preservatives

Identity and purity is laboratory verified

Made in USA, Hawaii

Organic Alcohol Based

FDA Statement of Identity

Herbal Supplement

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Eastern Red Cedar by Hawaii Pharm label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Eastern Red Cedar label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Eastern Red Cedar by Hawaii Pharm

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size0.7 mL Dosage formLiquid Servings per container120 Amounts shown are per serving.

Eastern Red Cedar Chip Extract, Dry

Interacts with
49 drugs
983 mg per serving

Eastern Red Cedar is a North American evergreen tree whose wood and aromatic oil have long been used for fragrance, insect repelling, and folk remedie...

Eastern Red Cedar Chip Extract, Dry monograph & interactions

Other (inactive) ingredients: Alcohol, Water, Glycerin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Eastern Red Cedar by Hawaii Pharm Drug Interactions

Want to check YOUR meds against Eastern Red Cedar?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
49Drugs
49 Minor

Ingredients driving the most interactions

Eastern Red Cedar Chip Extract, Dry 49

Individual Drug Interactions

The ingredients in Eastern Red Cedar interact with 49 drugs. Click any drug to see the details.

1 of the 1 ingredient in Eastern Red Cedar interact with drugs. Each result below shows which ingredient is responsible. Eastern Red Cedar Chip Extract, Dry

Each ingredient & the kinds of drugs it affects

For each ingredient in Eastern Red Cedar with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Eastern Red Cedar Chip Extract, Dry1 drug type · 49 drugs

Barbiturates

In mice and rats given hexobarbital or pentobarbital, sleep time is reduced and metabolism of the drug is increased when they inhale essential oil vapor from Eastern red cedar wood chips in their bedding. Cedrol and cedrene in the essential oil are reported to induce liver microsomal enzymes. Theoretically, inhaling Eastern red cedar wood fragrance might reduce the efficacy of hexobarbital or pentobarbital in humans.

Likelihood Unlikely Evidence D
Eastern Red Cedar Chip Extract, Dry full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Eastern Red Cedar, from the product label.

Hawaii Pharm

See all Hawaii Pharm products
Name
Hawaii Pharm LLC
Street Address
510 Sumner St. Ste. 613
City
Honolulu
State
HI
ZipCode
96817
Phone Number
888-854-2924
Web Address
www.hawaiipharm.com
Pharmacist Counseling Corner

Eastern Red Cedar by Hawaii Pharm: Common Questions

Does Eastern Red Cedar by Hawaii Pharm interact with any medications?
Yes. Based on its ingredients, Eastern Red Cedar has a known interaction with 49 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Eastern Red Cedar contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Is it safe to use Eastern Red Cedar while I'm pregnant?
The safety data advise against it — cedar oils may be irritating and safety hasn't been established in pregnancy. Talk with your doctor or pharmacist about what's right for you.
What happens if I swallow too much of this product?
Overdose of Eastern red cedar oil can cause stomach burning, vomiting, and in severe cases convulsions and coma. If you swallow a large amount, seek emergency help right away.
Can I use this on my skin?
Yes, topically it's generally well tolerated — clinical studies show it doesn't cause skin sensitization or irritation in most people. That said, some individuals may have allergic reactions or irritation, so test a small amount first if your skin is sensitive.
Is it safe to use while breastfeeding?
There isn't enough safety information to know either way. Talk with your pharmacist or doctor for personalized advice about whether it's right for you.
What's inside this liquid?
The active ingredient is Eastern Red Cedar Chip Extract, Dry. It's mixed with alcohol, water, and glycerin to make the liquid form.

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

Not sure if Eastern Red Cedar is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Eastern Red Cedar label
Go deeper

The Full Monographs Behind Eastern Red Cedar’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Eastern Red Cedar

Interacts with 49 drugs

Eastern Red Cedar is a North American evergreen tree whose wood and aromatic oil have long been used for fragrance, insect repelling, and folk remedies. Solid human research on its health be...

Read the full Eastern Red Cedar monograph →
Sources

Sources & How We Checked

Eastern Red Cedar's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

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

The 4 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Eastern Red Cedar 4 references
  1. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  2. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  3. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  4. Johnson W. Final report on the safety assessment of Juniperus communis Extract, Juniperus oxycedrus Extract, Juniperus oxycedrus Tar, Juniperus phoenicea extract, and Juniperus virginiana Extract. Int J Toxicol 2001;20 Suppl 2:41-56. PubMed

See these in context on the Eastern Red Cedar monograph →

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

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