Cannabis + Etonogestrel, Ethinyl Estradiol
Etonogestrel, Ethinyl Estradiol brand name: NuvaRing.
Etonogestrel, Ethinyl Estradiol falls into 3 drug categories that Cannabis can interact with; the most serious is rated moderate. Theoretically, CYP3A4 inhibitors might increase the levels and adverse effects of cannabis.
Read the full interaction reportCannabis and Etonogestrel, Ethinyl Estradiol
These two interact in 3 distinct ways. Each one is explained separately below.
Why Are There 3 Interactions?
Cannabis interacts with whole categories of medication. Etonogestrel, Ethinyl Estradiol falls into 3 of those categories, so it can interact with Cannabis in 3 different ways. We’ve listed each one below — your overall risk is driven by the most serious of them (Moderate).
CYTOCHROME P450 3A4 (CYP3A4) INHIBITORS
1 of 3Why this applies to Etonogestrel, Ethinyl Estradiol
Etonogestrel, Ethinyl Estradiol falls under CYTOCHROME P450 3A4 (CYP3A4) INHIBITORS — the group Cannabis interacts with.
Delta-9-tetrahydrocannabinol (THC), an active constituent of cannabis, is a substrate of CYP3A4 enzymes.
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.
Here's the key thing to understand about your NuvaRing and cannabis: the interaction we have on file runs in one direction. The hormones in your ring (etonogestrel and ethinyl estradiol) can mildly slow down the CYP3A4 enzyme that helps your body break down THC, the part of cannabis that gets you high. So in theory, the cannabis could hang around a bit longer and feel stronger, meaning more drowsiness, dizziness, dry mouth, or that foggy, impaired feeling.
I want to be honest that this is theoretical, based on how these compounds behave in the lab, not on strong real-world studies. Your ring itself shouldn't lose effectiveness from this. Still, go slow with cannabis and chat with your pharmacist or doctor, especially if you feel more affected than expected.
- Product information for Marinol. AbbVie. North Chicago, IL 60064. August 2017. Available at: https://www.accessdata.fda.gov/drugsatfda_docs/label/2017/018651s029lbl.pdf.
CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES
2 of 3Etonogestrel, Ethinyl Estradiol also falls under CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES.
In vitro research shows that cannabis can inhibit the activity of CYP3A4 enzymes, which might decrease the metabolism of CYP3A4 substrates. In vitro research also shows that cannabis extracts modestly inhibit the CYP3A4 metabolism of testosterone; extracts providing the specific cannabinoids CBD and cannabigerol (CBG) had stronger inhibitory effects than extracts containing THC and CBD.
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.
Your NuvaRing releases two active hormones, etonogestrel and ethinyl estradiol, and your liver clears them partly through an enzyme called CYP3A4. These hormones work as-is, so they're not prodrugs that need switching on. Lab studies suggest some cannabis compounds (especially CBD and CBG) can gently slow CYP3A4. In theory, that could let a little more of the hormones build up in your system.
Keep this in perspective. This is based only on test-tube research, not real-world reports, so the effect is uncertain and likely small. If it did matter, you might notice more typical estrogen-related effects like nausea, breast tenderness, headaches, or breakthrough bleeding. There's no need to panic, but it's a good idea to mention your cannabis use to your doctor or pharmacist.
- Pellinen, P., Honkakoski, P., Stenback, F., Niemitz, M., Alhava, E., Pelkonen, O., Lang, M. A., and Pasanen, M. Cocaine N-demethylation and the metabolism-related hepatotoxicity can be prevented by cytochrome P450 3A inhibitors. Eur.J Pharmacol 1-3-1994;2 PubMed
- Treyer A, Reinhardt JK, Eigenmann DE, Oufir M, Hamburger M. Phytochemical comparison of medicinal cannabis extracts and study of their CYP-mediated interactions with coumarinic oral anticoagulants. Med Cannabis Cannabinoids. 2023;6(1):21-31. PubMed
P-GLYCOPROTEIN SUBSTRATES
3 of 3Etonogestrel, Ethinyl Estradiol also falls under P-GLYCOPROTEIN SUBSTRATES.
Most in vitro research suggests that constituents of cannabis, including cannabidiol (CBD) and delta-9-tetrahydrocannabinol (THC), can inhibit P-gp and increase the accumulation of probe compounds by reducing P-gp mediated drug efflux. In vitro studies in kidney cell lines show that a 1-hour exposure to CBD and THC inhibits P-gp. Cannabis may also alter the expression of P-gp, although this effect appears to vary based on duration of exposure. Some in vitro research in lymphoblastoid leukemia cell lines indicates that a 1-hour exposure to cannabinoids does not affect P-gp expression, while a prolonged 72-hour exposure decreases P-gp expression. Other in vitro research in these cell lines shows that a 4-hour exposure to THC and CBD induces P-gp gene expression, while exposure for longer than 4 hours and up to 48 hours does not induce P-gp gene expression.
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.
Here's the honest picture for your NuvaRing, which releases the hormones etonogestrel and ethinyl estradiol. There's a theory that cannabis can block a transporter protein called P-glycoprotein (P-gp), which helps move certain drugs around and out of the body. If that pump slows down, levels of some medications could creep up a bit.
But I want to keep this in perspective. This concern comes only from lab and cell studies, not from real people, so it's theoretical and the practical effect on your birth control is uncertain. Hormonal contraceptives aren't strongly tied to P-gp anyway. If hormone levels did rise, you might notice more nausea, breast tenderness, or spotting, but this is far from proven. Don't change anything on your own. Just give your pharmacist or doctor a quick heads-up if you use cannabis regularly.
- Zhu, H. J., Wang, J. S., Markowitz, J. S., Donovan, J. L., Gibson, B. B., Gefroh, H. A., and Devane, C. L. Characterization of P-glycoprotein inhibition by major cannabinoids from marijuana. J Pharmacol Exp.Ther. 2006;317(2):850-857. PubMed
- Holland, M. L., Panetta, J. A., Hoskins, J. M., Bebawy, M., Roufogalis, B. D., Allen, J. D., and Arnold, J. C. The effects of cannabinoids on P-glycoprotein transport and expression in multidrug resistant cells. Biochem.Pharmacol 4-14-2006;71(8):1146-115 PubMed
- Tournier N, Lucie Chevillard L, Megarbane B, et al. Interaction of drugs of abuse and maintenance treatments with human P-glycoprotein (ABCB1) and breast cancer resistance protein (ABCG2). Int J Neuropsychopharmacol. 2010;13(7):905-15. PubMed
- Arnold JC, Hone P, Holland ML, Allen JD. CB2 and TRPV1 receptors mediate cannabinoid actions on MDR1 expression in multidrug resistant cells. Pharmacol Rep. 2012;64(3):751-7. PubMed
What These Ratings Mean
Every interaction above is graded three ways — here’s the key to each label.
Clinically significant. Avoid the combination, or use only under close professional supervision.
Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.
Generally not serious. Be aware of it and mention it to your pharmacist.
- LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
- ProbableInteraction 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.
- PossibleInteraction 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.
- UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
- AHigh-quality meta-analysis (quantitative systematic review).
- BCase-control study.
- CConsensus.
- DAnecdotal evidence.
These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.
Cannabis Also Interacts With Other Medications
Cannabis has 2 major, 1,108 moderate, 25 minor known drug interactions in our database — the Etonogestrel, Ethinyl Estradiol one above is among them. If you take anything else, check it against the full list below.
Check Another of Your Medications Against Cannabis
We haven’t checked that one against Cannabis yet — ask our pharmacists directly.
Covers the 2,830 medications we’ve checked against Cannabis. Pick one to open its full report.
Questions About Cannabis or Etonogestrel, Ethinyl Estradiol
These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Cannabis or Etonogestrel, Ethinyl Estradiol, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:
Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.
See Every Supplement That Interacts With Etonogestrel, Ethinyl Estradiol
This page covers Cannabis only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Etonogestrel, Ethinyl Estradiol page lists 203 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), Activated Charcoal (moderate) and Adrafinil (moderate).
By severity: 2 major · 168 moderate · 33 minor.
From our pharmacist’s overview on the Etonogestrel, Ethinyl Estradiol page
“St. John's wort belongs at the top of any conversation about NuvaRing (etonogestrel and ethinyl estradiol) and supplements.”
Reviewed by 2 · Jul 18, 2026
Taking Cannabis as Part of a Dietary Supplement Product? Check It for Interactions
We hold 21 real supplement products containing Cannabis, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Cannabis. Your product may carry other ingredients that interact with Etonogestrel, Ethinyl Estradiol too, on top of Cannabis — and those would not show on this page. Find your product and we’ll check every ingredient on its label:
Where Cannabis and Etonogestrel, Ethinyl Estradiol 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.
#230 of 1,452 supplements looked up here in the last 7 days
#788 of 2,830 medications looked up here in the last 7 days
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.
About Cannabis
What is Cannabis?
- Chronic pain
- Nausea and vomiting from chemotherapy
- Muscle spasticity (e.g., multiple sclerosis)
- Anxiety and stress
- Sleep problems
- Appetite stimulation
Cannabis contains many active compounds, mainly THC (which causes a 'high') and CBD (which does not). Some uses, such as chemotherapy-related nausea, certain seizure disorders, and muscle spasticity, have meaningful evidence, while many other popular uses are not well proven. It can cause real side effects and impairment, so talk to your doctor or pharmacist and follow your local laws before using it.
Other Drugs & Cannabis
Browse every other medication we’ve checked against Cannabis — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
2 interactions
1,108 interactions
- Diclofenac Sodium ›
- Diltiazem ›
- Theophylline ›
- Nifedipine ›
- Ibuprofen ›
- Metronidazole ›
- Diphenhydramine ›
- Aspirin ›
- Hydrocortisone ›
- Naproxen ›
- Doxycycline ›
- Erythromycin ›
- Estradiol ›
- Minocycline ›
- Propranolol ›
- Tetracycline ›
- Lidocaine ›
- Ranitidine ›
- Norethindrone ›
- Testosterone ›
- Verapamil ›
- Fenofibrate ›
- Levonorgestrel ›
- Prednisone ›
- Quinidine ›
- Cyclosporine ›
- Dexamethasone ›
- Flurazepam ›
- Glyburide ›
- Triazolam ›
- Zopiclone ›
- Ciprofloxacin ›
- Colchicine ›
- Fentanyl ›
- Flurbiprofen ›
- Oxybutynin ›
- Oxycodone ›
- Phenytoin ›
- Prednisolone ›
- Tacrolimus ›
- Temazepam ›
- Triamcinolone ›
- Apomorphine ›
- Budesonide ›
- Carbamazepine ›
- Clindamycin ›
- Dextromethorphan ›
- Diclofenac Potassium ›
- Dipyridamole ›
- Doxorubicin ›
- Fluticasone ›
- Formoterol ›
- Indomethacin ›
- Miconazole ›
- Morphine Sulfate ›
- Nitrazepam ›
- Trimipramine ›
- Acetaminophen ›
- Buprenorphine ›
- Conjugated Estrogens ›
Showing 60 of 1,108 moderate interactions — see all 1,108 on the Cannabis page.
25 interactions
- Fluphenazine ›
- Asenapine ›
- Clozapine ›
- Prochlorperazine ›
- Acetophenazine ›
- Butaperazine ›
- Carphenazine ›
- Chlorprothixene ›
- Isopropamide Iodide ›
- Mesoridazine Besylate ›
- Methotrimeprazine Maleate ›
- Molindone ›
- Olanzapine ›
- Paliperidone ›
- Paliperidone Palmitate ›
- Pericyazine ›
- Perphenazine ›
- Piperacetazine ›
- Promazine ›
- Sertindole ›
- Thiothixene ›
- Trifluoperazine ›
- Triflupromazine ›
- Isopropamide, Trifluoperazine ›
- Isopropamide, Prochlorperazine ›
No interaction 1,694 drugs checked — show the list
We also checked Cannabis against these medications and found no known interaction in our sources. Open any page to confirm.
- Levothyroxine ›
- Methylphenidate ›
- Metoprolol ›
- Rosuvastatin ›
- Escitalopram ›
- Docusate ›
- Valacyclovir ›
- Hydroxyurea ›
- Tirzepatide ›
- Methamphetamine ›
- Semaglutide ›
- Sumatriptan ›
- Lisdexamfetamine ›
- Metformin ›
- Lisinopril ›
- Amoxicillin ›
- Bupropion ›
- Bendamustine ›
- Acyclovir ›
- Methotrexate ›
- Amphetamine ›
- Azithromycin ›
- Isotretinoin ›
- Dextroamphetamine ›
- Methylene Blue ›
- Duloxetine ›
- Bisoprolol ›
- Levothyroxine, Liothyronine ›
- Candesartan Cilexetil ›
- Cephalexin ›
- Cyclopentolate ›
- Mannitol ›
- Pegunigalsidase Alfa-iwxj ›
- Ezetimibe ›
- Daptomycin ›
- Levothyroxine Sodium ›
- Dexmethylphenidate ›
- Mitomycin ›
- Amoxicillin, Clavulanate Potassium ›
- Spironolactone ›
- Thyroid Hormone ›
- Carbidopa, Levodopa ›
- Factor 7a ›
- Levodopa ›
- Minoxidil ›
- Hethylphenidate Hcl ›
- Cefaclor ›
- Lenvatinib ›
- Venlafaxine ›
- Azelaic Acid ›
- Phenylephrine ›
- Nortriptyline ›
- Hydroxychloroquine ›
- Dirithromycin ›
- Vancomycin ›
- Triptorelin ›
- Pizotifen ›
- Bentoquatam ›
- Ribavirin Aerosol ›
- Procainamide ›
Showing the 60 most looked-up of 1,694 medications checked with no known interaction — see the full Cannabis list.
Sources & How We Checked
Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference for vitamins, herbs and supplements — the basis for our interaction data.
- MedlinePlus, U.S. National Library of Medicine — NIH consumer drug information, used for the medication overviews.
- NIH Dietary Supplement Label Database (DSLD) — Official supplement product labels.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
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
Etonogestrel, Ethinyl Estradiol Is Linked to Lower Levels of 7 Nutrients
Natural Medicines records Etonogestrel, Ethinyl Estradiol as a medicine that can lower these. This is not an interaction with Cannabis — it is a separate effect of the medicine, and it is a reason some people are advised to supplement rather than to avoid one:
Read the full Etonogestrel, Ethinyl Estradiol nutrient depletion report ›
Depletion records come from the licensed Natural Medicines database. Do not start a supplement on the strength of this page — ask your pharmacist or doctor whether it applies to you.
Taking Cannabis and Etonogestrel, Ethinyl Estradiol Together: Common Questions
Can you take Cannabis with Etonogestrel, Ethinyl Estradiol?
Why are there 3 interactions listed for Cannabis and Etonogestrel, Ethinyl Estradiol?
How serious is the Cannabis and Etonogestrel, Ethinyl Estradiol interaction?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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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.