Herb & supplement monograph

Royal Jelly Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·Updated July 2026

What is this page for?

First and foremost: how Royal Jelly interacts with medications. The heart of this page is the interaction list — every drug Royal Jelly is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Royal Jelly is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy

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Royal Jelly Drug Interactions: The Bottom Line

From the HelloPharmacist Editorial Team · Updated July 2026

Based on the available evidence, the overall risk of a clinically significant Royal Jelly drug interaction appears low for most people. None of the listed interactions are rated major, and the evidence behind them comes mostly from animal research or isolated reports rather than well-controlled human studies.

Interactions deserving the most attention

The interaction that deserves the most attention involves warfarin. In one reported case, an older man who had been stable on warfarin developed blood in his urine and a dangerously elevated INR after taking royal jelly for a week, so anyone on this blood thinner should treat the combination with caution. Royal jelly may also lower blood pressure, so people taking blood pressure medications could, in theory, see an added drop, though this is based on animal research only.

What the rest of the list means

Royal jelly is listed with a long roster of interacting medications, but that number reflects how many drugs fall into these broad categories, not proof of harm with each one. Most of the concern is theoretical, drawn from animal studies or a single case report, and predicted effects have not been confirmed in careful human research.

Check your medications against Royal Jelly

Based on HelloPharmacist’s Royal Jelly interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with Royal Jelly

174 medications have a known interaction with Royal Jelly, graded by severity. Select any drug for the full evidence-based detail.

Don’t want to scroll the list? Just ask.

Tell us the medications you take and we’ll check each one against Royal Jelly using our pharmacist-reviewed interaction data.

AI summaries are generated from our Royal Jelly interaction data for education only — always confirm with your pharmacist. How we use AI

2,830 drugs

Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
Each drug listed above links to the full report for that exact Royal Jelly combination — clinical detail, likelihood, evidence level, and citations.
Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

The big picture

The kinds of drugs Royal Jelly affects

Every type of medication (drug category) Royal Jelly is known to interact with. Open any category for the detail — or search your exact drug in the checker above.

All 2 drug categories Royal Jelly interacts with

Antihypertensive DrugsWarfarin (coumadin)

Antihypertensive Drugs

Theoretically, royal jelly might increase the risk of hypotension when taken with antihypertensive drugs.
Animal research suggests that royal jelly might lower blood pressure.

Likelihood Possible Evidence D

Warfarin (Coumadin)

Royal jelly might increase the risk of bleeding when taken with warfarin.
In one case, an 87-year-old male who was previously stabilized on warfarin developed hematuria and was found to have an INR of 7.29 after taking a royal jelly supplement for one week.

Likelihood Possible Evidence D

Monograph

Royal Jelly: Uses, Safety & Side Effects

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Reviewed July 2026 ·

The bottom line

Royal jelly is a nutrient-rich substance made by worker bees to feed the queen bee. People take it for menopause symptoms, energy, skin, and immune support, but solid human evidence is limited for most uses. It is generally well tolerated by most people, but it can cause serious allergic reactions, especially in those allergic to bees or with asthma.

Part used: Secretion from the glands of worker honey bees (Apis mellifera)
Common forms: Capsules, softgels, fresh (frozen) jelly, liquid, powder, and skin creams

People commonly use it for

Menopausal symptoms
Skin health and wound care
Immune support
General energy and vitality
Cholesterol support
Eye dryness (eye drops)

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance

OverallUse caution

Generally well tolerated, but it can trigger serious allergic reactions in sensitive people.

PregnancyInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full pregnancy detail

BreastfeedingInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

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Overview

Royal jelly is a thick, milky-white substance made by worker honey bees (Apis mellifera). The bees secrete it from glands in their heads and use it to feed the developing queen bee. This special diet is thought to be one reason the queen grows larger, lives longer, and is able to lay eggs while other female bees do not.

Royal jelly contains a mix of water, proteins, sugars, fats, vitamins, minerals, and natural compounds that act as antioxidants. Because of these nutrients, it has long been used in traditional medicine and is now sold widely as a dietary supplement.

People take royal jelly in capsules, softgels, liquids, and fresh frozen forms. It is also added to skin creams and a few eye-drop products. Many of its popular uses are based on tradition or early research rather than strong proof.

How it works

Royal jelly contains proteins, fatty acids, sugars, vitamins, and minerals. One of its best-known compounds is a fatty acid often called 10-HDA (10-hydroxy-2-decenoic acid), which is unique to royal jelly and is studied for possible anti-inflammatory and antioxidant effects.

In laboratory and animal studies, royal jelly and its compounds have shown antioxidant, anti-inflammatory, and antibacterial activity. Some research also suggests it may act in a mild estrogen-like way, which is one proposed reason it is studied for menopause.

It is important to remember that most of these mechanisms come from test-tube or animal research. How well they apply to people taking supplements by mouth is still uncertain.

Effectiveness

Does Royal Jelly work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by Dr. Brian Staiger, PharmD.

Evidence overview · 26 uses evaluated

1 Possibly effective 3 Leans ineffective 22 Insufficient evidence

How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.

2Likely EffectiveGood evidence, though not yet conclusive.

3Possibly EffectiveSome evidence suggests a benefit.

4Possibly IneffectiveSome evidence it may not help.

5Likely IneffectiveFairly strong evidence it doesn’t help.

6IneffectiveStrong evidence it doesn’t work.

7Insufficient Reliable Evidence to RateToo little research to say either way.

Possibly Effective Menopausal symptoms