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Dietary supplement

p-Ca from Ultra-Green Propolis Ingredients & Drug Interactions

by NaturaNectar

p-Ca from Ultra-Green Propolis label
See full label image
Liquid Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking p-Ca from Ultra-Green Propolis 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: Moderate

p-Ca from Ultra-Green Propolis is a dietary supplement by NaturaNectar with 1 active ingredient. Its ingredients are commonly taken for cold sores and herpes lesions (topical), sore throat and mouth sores, wound and skin healing.Based on those ingredients, 921 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are PWE-GD. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against p-Ca from Ultra-Green Propolis by NaturaNectar

Ask about any prescription or over-the-counter medication and we check it for interactions with p-Ca from Ultra-Green Propolis by NaturaNectar — and tell you which ingredient is responsible.

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Computed from our clinical databases

HelloPharmacist Scorecard of p-Ca from Ultra-Green Propolis by NaturaNectar

Four independent checks of what is known — a summary of the available information, not a grade of the product itself.

Evidence for Intended Use
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

None of the active ingredients could be matched to our evidence database, so intended use can't be graded.

Why this rating?
  • None of the active ingredients could be matched to a HelloPharmacist monograph, so intended use can't be graded against our evidence data.
Ingredient Transparency
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 2 of its 2 active ingredients.
  • “PWE-GD” is listed as a grouped ingredient — the label gives one combined amount (90 mg) without saying how much of each component you get.
Known Interaction Concern
Not assessable

None of the active ingredients could be matched to our interaction database.

Why this rating?
  • We couldn't match any ingredient to a HelloPharmacist monograph, so there was nothing to check interactions against.
Safety Information
Unable to assess

None of the active ingredients could be matched to our safety data.

Why this rating?
  • We couldn't match any ingredient to a HelloPharmacist monograph, so there was no safety data to measure.

HelloPharmacist summaryFully disclosed formula with no assessable stated purpose. Medication interactions could not be assessed, and safety information could not be assessed.

Assessment coverage: 0 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 23, 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 p-Ca from Ultra-Green Propolis, straight from the product label.

Brand NaturaNectar
Barcode (UPC) 837654326671
Net contents 2 Fluid Ounce(s); 60 mL
Market status On market
Date entered into DSLD Jan 23, 2025
DSLD ID 320733
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating), Gluten Free, Dairy Free, Sugar 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 p-Ca from Ultra-Green Propolis by NaturaNectar, 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:
1 mL
Maximum serving Sizes:
1 mL
Servings per container
60
UPC/BARCODE
837654326671
IngredientAmount% DV
P-Coumaric Acid1000 mcg--
PWE-GD90 mg--
Total Polyphenols12000 mcg--

Other ingredients: Water, Purified, Glycerin, Citric Acid, Cool Mint Flavor, Natural, natural Spearmint flavor, Potassium Sorbate

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.
Seals/Symbols

G Extraction

Technology from Denmark Made in USA from International Ingredients Premium Brazilian Propolis

Formulation

PWE-GD is obtained by NaturaNectar's exclusive Green Extraction for purity, standardization and potency.

NaturaNectar's pCA from Ultra-Green Propolis does not contain alcohol, propylene glycol, sugar, starch, wheat, gluten, yeast, milk (lactose), egg, shellfish, artificial flavors and colors.

Quality from the source. NaturaNectar's sister company ALMAR Apiary is located in beautiful Brazil, the home of the verdant rain forests, where the world's finest and purest bee propolis is harvested. Our ground breaking and effective products are sourced for you directly from the Brazilian honeybees and their bio diverse forests! 30+ Years perfecting the most advanced standardized propolis extracts Through our partnership with PRC-Propolis Research Center, our standardized, 100% water-based pure propolis extracts have become the foundation of NaturaNectar's extensive product line.

PWE Clinically tested

Refreshing taste propolis power Natural ingredients

Free of ethanol and propylene glycol Gluten free

Its unique formula, guaranteed origin and exclusive Green Extraction process yield purity, potency, and quality that are impossible to replicate.

NaturaNectar p-Ca from Ultra-Green Propolis is free of alcohol, propylene glycol and any other harsh-chemicals used by the majority of other lower quality propolis brands.

This product supports the health of: Systems Respiratory Immune Digestive Skeletal Urinary Nervous Cells Lung Throat Liver Brain Colon Kidney

Suggested/Recommended/Usage/Directions

Directions: Shake well before each use. Take one dropper full (1 mL) directly into your mouth or mix it with your preferred beverage one or two times daily to support overall health. May be taken in conjunction with our other unique life solutions daily or as recommended to help protect and activate your wellness naturally.

Precautions

Caution: As with any nutritional supplement, it is advised to consult your physician before taking, especially if pre-existing conditions are present.

Do not take if pregnant or breastfeeding.

Use with caution if allergic to bee products.

Keep out of reach of children.

Storage

Store in a cool, dry place.

Brand IP Statement(s)

Copyright 2022 NaturaNectar LLC

My Wellness Zone

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

General Statements

NaturaNectar A trusted brand based on our scientific understanding of the magnificent benefits of honeybees and their bee propolis At NaturaNectar, we understand the nature and science behind the beehive and find our inspiration there. With the same focus and dedication of the honeybees to build sustainable and productive hives with their propolis, our company is dedicated to bringing you wellness products imbued with the same protective propolis to help you live an active and healthy life. We commit our corporate resources to the vital research needed to ensure that honeybees continue to be nature's true marvels as well as supporting the surrounding communities that help harvest our bee propolis in a sustainable way.

The mission of NaturaNectar is to protect and activate wellness naturally through our commitment to developing trusted, science-based, doctor-formulated products while being socially and environmentally responsible. Protect & Activate wellness naturally

Today we are exposed to more noise, pollution, and daily challenges than ever before, creating a potential overload that can threaten our wellness, mental alertness and happiness. Like the bees that protect their hives and health with propolis, NaturaNectar's p-CA from Ultra-Green Propolis supports healthy systems and cells all year round.

naturanectar.com/p-Ca

FDA Statement of Identity

Daily Dietary Supplement

Formula

P-Coumaric acid (p-Ca), along with other Brazilian ultra-green propolis polyphenols, is widely investigated by the scientific community. Results indicate positive immune supporting mechanisms that are crucial for the balanced lifestyle that today's consumers are in search of. NaturaNectar p-Ca from Ultra-Green Propolis comes in response to this need and to complement the already popular Brazilian Green Bee Propolis in capsules. It focuses on p-Coumaric acid, one of the most important active compounds in this type of Brazillian propoilis.

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

See for yourself

p-Ca from Ultra-Green Propolis by NaturaNectar label

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

p-Ca from Ultra-Green Propolis 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 p-Ca from Ultra-Green Propolis by NaturaNectar

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

Serving size1 mL Dosage formLiquid Servings per container60 Amounts shown are per serving.

PWE-GD

Interacts with
921 drugs
90 mg per serving Form: Brazilian Ultra-Green Propolis Water Extract

Propolis is a natural, resin-like substance made by bees that has antimicrobial and anti-inflammatory properties in lab studies. Early research sugges...

PWE-GD monograph & interactions
  • › P-Coumaric Acid
  • › Total Polyphenols

Other (inactive) ingredients: Water, Purified, Glycerin, Citric Acid, Cool Mint Flavor, Natural, Natural Spearmint flavor, Potassium Sorbate. These complete the product’s ingredient list but are not active constituents.

Interaction report

p-Ca from Ultra-Green Propolis by NaturaNectar Drug Interactions

p-Ca from Ultra-Green Propolis contains a single active ingredient, and it has known interactions with 921 medications. Here’s the picture, then you can look up your own drug.

Want to check YOUR meds against p-Ca from Ultra-Green Propolis?

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
921Drugs
921 Moderate

Ingredients driving the most interactions

PWE-GD 921

Individual Drug Interactions

The ingredients in p-Ca from Ultra-Green Propolis interact with 921 drugs. Click any drug to see the details.

1 of the 1 ingredient in p-Ca from Ultra-Green Propolis interact with drugs. Each result below shows which ingredient is responsible. PWE-GD

Each ingredient & the kinds of drugs it affects

For each ingredient in p-Ca from Ultra-Green Propolis 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.

PWE-GD8 drug types · 921 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, propolis might increase the risk of bleeding when taken with antiplatelet or anticoagulant drugs.
In vitro research shows that propolis water extract and the propolis constituent, caffeic acid phenethyl ester, can inhibit platelet aggregation. Additionally, evidence from an animal model shows that taking propolis in addition to warfarin decreases INR, suggesting that propolis can decrease the effectiveness of warfarin.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, high doses of propolis might increase blood levels of drugs metabolized by CYP1A2.
In vitro research shows that propolis extract can inhibit CYP1A2. However, animal research shows that propolis extract does not significantly affect CYP1A2 activity when administered to rats at doses up to 250 mg/kg. It is postulated that the constituents of propolis that inhibit CYP1A2 in vitro do not have significant effects in vivo due to low bioavailability and hepatic first-pass effect. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C19 (Cyp2C19) Substrates

Theoretically, high doses of propolis might increase blood levels of drugs metabolized by CYP2C19.
In vitro research shows that propolis extract can inhibit CYP2C19. However, animal research shows that propolis extract does not significantly affect CYP2C19 activity when administered to rats at doses up to 250 mg/kg. It is postulated that the constituents of propolis that inhibit CYP2C19 in vitro do not have significant effects in vivo due to low bioavailability and hepatic first-pass effect. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C9 (Cyp2C9) Substrates

Theoretically, high doses of propolis might increase blood levels of drugs metabolized by CYP2C9.
In vitro research shows that propolis extract can inhibit CYP2C9. However, animal research shows that propolis extract does not significantly affect CYP2C9 activity when administered to rats at doses up to 250 mg/kg. It is postulated that the constituents of propolis that inhibit CYP2C9 in vitro do not have significant effects in vivo due to low bioavailability and hepatic first-pass effect. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2D6 (Cyp2D6) Substrates

Theoretically, high doses of propolis might increase blood levels of drugs metabolized by CYP2D6.
In vitro research shows that propolis extract can inhibit CYP2D6. However, animal research shows that propolis extract does not significantly affect CYP2D6 activity when administered to rats at doses up to 250 mg/kg. It is postulated that the constituents of propolis that inhibit CYP2D6 in vitro do not have significant effects in vivo due to low bioavailability and hepatic first-pass effect. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2E1 (Cyp2E1) Substrates

Theoretically, propolis might increase levels of drugs metabolized by CYP2E1.
In vitro research shows that propolis can inhibit CYP2E1. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, high doses of propolis might increase blood levels of drugs metabolized by CYP3A4.
Some in vitro research shows that propolis extract can inhibit CYP3A4; however, other in vitro research shows that propolis has no effect on CYP3A4 activity. Furthermore, animal research shows that propolis extract does not significantly affect CYP3A4 activity when administered to rats at doses up to 250 mg/kg. It is postulated that the constituents of propolis that might in inhibit CYP3A4 in vitro do not have significant effects in vivo due to low bioavailability and hepatic first-pass effect. This effect has not been reported in humans.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, propolis might decrease the effectiveness of warfarin.
Animal research shows that taking propolis in addition to warfarin decreases the international normalized ratio (INR). This effect has not been reported in humans.

Likelihood Possible Evidence D
PWE-GD full monograph & interactions
The maker

Brand information

Manufacturer and brand details for p-Ca from Ultra-Green Propolis, from the product label.

NaturaNectar

See all NaturaNectar products
Name
NaturaNectar LLC
Street Address
4631 NW 103rd Ave.
City
Sunrise
State
FL
ZipCode
33351
Phone Number
800.609.7794
Web Address
naturanectar.com
Pharmacist Counseling Corner

p-Ca from Ultra-Green Propolis by NaturaNectar: Common Questions

Does p-Ca from Ultra-Green Propolis by NaturaNectar interact with any medications?
Yes. Based on its ingredients, p-Ca from Ultra-Green Propolis has a known interaction with 921 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
p-Ca from Ultra-Green Propolis 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.

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

Not sure if p-Ca from Ultra-Green Propolis 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.

p-Ca from Ultra-Green Propolis label
Go deeper

The Full Monographs Behind p-Ca from Ultra-Green Propolis’s Ingredients

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

Herb & supplement monograph

Propolis

Interacts with 921 drugs

Propolis is a natural, resin-like substance made by bees that has antimicrobial and anti-inflammatory properties in lab studies. Early research suggests it may help with cold sores, mouth so...

Read the full Propolis monograph →
Sources

Sources & How We Checked

p-Ca from Ultra-Green Propolis'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 21 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.

Propolis 21 references
  1. Hay KD, Greig DE. Propolis allergy: a cause of oral mucositis with ulceration. Oral Surg Oral Med Oral Pathol 1990;70:584-6. PubMed
  2. Li YJ, Lin JL, Yang CW, Yu CC. Acute renal failure induced by a Brazilian variety of propolis. Am J Kidney Dis 2005;46:e125-9. PubMed
  3. Jensen CD, Andersen KE. Allergic contact dermatitis from cera alba (purified propolis) in a lip balm and candy. Contact Dermatitis 2006;55:312-3. PubMed
  4. Chen, T. G., Lee, J. J., Lin, K. H., Shen, C. H., Chou, D. S., and Sheu, J. R. Antiplatelet activity of caffeic acid phenethyl ester is mediated through a cyclic GMP-dependent pathway in human platelets. Chin J Physiol 6-30-2007;50(3):121-126.
  5. Hsu, C. Y., Chiang, W. C., Weng, T. I., Chen, W. J., and Yuan, A. Laryngeal edema and anaphalactic shock after topical propolis use for acute pharyngitis. Am J Emerg.Med 2004;22(5):432-433. PubMed
  6. Black, R. J. Vulval eczema associated with propolis sensitization from topical therapies treated successfully with pimecrolimus cream. Clin Exp.Dermatol. 2005;30(1):91-92. PubMed
  7. Matos D, Serrano P, Brandao FM. A case of allergic contact dermatitis caused by propolis-enriched honey. Contact Dermatitis 2015;72(1):59-60. PubMed
  8. Naramoto K, Kato M, Ichihara K. Effects of an ethanol extract of Brazilian green propolis on human cytochrome P450 enzyme activities in vitro. J Agric Food Chem 2014;62(46):11296-302. PubMed
  9. Nyman G, Hagvall L. A case of allergic contact cheilitis caused by propolis and honey. Contact Dermatitis 2016;74(3):186-7. PubMed
  10. Ryu CS, Oh SJ, Oh JM, et al. Inhibition of cytochrome P450 by propolis in human liver microsomes. Toxicol Res 2016;32(3):207-13. PubMed
  11. Akbay E, Özenirler Ç, Çelemli ÖG, Durukan AB, Onur MA, Sorkun K. Effects of propolis on warfarin efficacy. Kardiochir Torakochirurgia Pol. 2017;14(1):43-46. PubMed
  12. Lamoureux A, Meharon M, Durand AL, Darrigade AS, Doutre MS, Milpied B. A first case of erythema multiforme-like contact dermatitis caused by propolis. Contact Dermatitis. 2017;77(4):263-264. PubMed
  13. Piredda M, Facchinetti G, Biagioli V, et al. Propolis in the prevention of oral mucositis in breast cancer patients receiving adjuvant chemotherapy: A pilot randomised controlled trial. Eur J Cancer Care (Engl). 2017;26(6). PubMed
  14. Zhang YX, Yang TT, Xia L, Zhang WF, Wang JF, Wu YP. Inhibitory Effect of Propolis on Platelet Aggregation In Vitro. J Healthc Eng. 2017;2017:3050895. PubMed
  15. Nyman GSA, Tang M, Inerot A, Osmancevic A, Malmberg P, Hagvall L. Contact allergy to beeswax and propolis among patients with cheilitis or facial dermatitis. Contact Dermatitis 2019;81(2):110-6. PubMed
  16. Igarashi G, Segawa T, Akiyama N, et al. Efficacy of Brazilian propolis supplementation for japanese lactating women for atopic sensitization and nonspecific symptoms in their offspring: a randomized, double-blind, placebo-controlled trial. Evid Based Comp PubMed
  17. Soleimani D, Rezaie M, Rajabzadeh F, et al. Protective effects of propolis on hepatic steatosis and fibrosis among patients with nonalcoholic fatty liver disease (NAFLD) evaluated by real-time two-dimensional shear wave elastography: a randomized clinical
  18. D'Ercole MC. Prolonged use of propolis can increase liver enzymes. J Gastrointestin Liver Dis 2020;29(3):468-9. PubMed
  19. Cho E, Lee JD, Cho SH. Systemic contact dermatitis from propolis ingestion. Ann Dermatol. 2011;23(1):85-88. PubMed
  20. Hallajzadeh J, Milajerdi A, Amirani E, Attari VE, Maghsoudi H, Mirhashemi SM. Effects of propolis supplementation on glycemic status, lipid profiles, inflammation and oxidative stress, liver enzymes, and body weight: a systematic review and meta-analysis
  21. Gheflati A, Dehnavi Z, Ghannadzadeh Yazdi A, Khorasanchi Z, Raeisi-Dehkordi H, Ranjbar G. The effects of propolis supplementation on metabolic parameters: a systematic review and meta-analysis of randomized controlled clinical trials. Avicenna J Phytomed

See these in context on the Propolis 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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