19-nor-dhea + Testosterone Undecanoate
Testosterone Undecanoate brand names: Andriol, Aveed, Jatenzo, Kyzatrex.
19-nor-dhea has a moderate interaction with Testosterone Undecanoate. 19-nor-DHEA is purportedly converted to nandrolone and other androgens upon ingestion.
Read the full interaction report19-nor-dhea and Testosterone Undecanoate
Here is the interaction we found between these two, with the evidence behind it.
TESTOSTERONE
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 simple version: testosterone undecanoate is already a prescribed androgen hormone, and 19-nor-DHEA is sold as a 'prohormone' that your body may convert into nandrolone-like androgens. So you'd essentially be stacking two hormone sources on top of each other. The worry isn't that one blocks the other, it's that the effects add up.
With more androgen activity than intended, you could see more of the usual testosterone-related issues: mood swings or irritability, acne and oily skin, a rising red blood cell count, swelling, and added strain on the heart, liver, and kidneys. This concern is theoretical, based on how these compounds work rather than solid human studies, but I'd take it seriously since 19-nor-DHEA itself is poorly studied and risky. Please run this by your doctor or pharmacist before combining them.
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.
19-nor-dhea Also Interacts With Other Medications
19-nor-dhea has 7 moderate known drug interactions in our database — the Testosterone Undecanoate one above is one of them. If you take anything else, check it against the full list below.
Check Another of Your Medications Against 19-nor-dhea
We haven’t checked that one against 19-nor-dhea yet — ask our pharmacists directly.
Covers the 2,830 medications we’ve checked against 19-nor-dhea. Pick one to open its full report.
Questions About 19-nor-dhea or Testosterone Undecanoate
These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers 19-nor-dhea or Testosterone Undecanoate, 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:
- Pharmacist Instructing To Reuse Single Dose Testosterone Vials ›
- Is Frozen Testosterone Still Safe To Use? ›
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 Testosterone Undecanoate
This page covers 19-nor-dhea only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Testosterone Undecanoate page lists 200 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Activated Charcoal (major), Beer (major), Grapefruit (major), Siberian Cocklebur (major) and St. John's Wort (major).
By severity: 7 major · 150 moderate · 43 minor.
From our pharmacist’s overview on the Testosterone Undecanoate page
“The supplement list for testosterone undecanoate (Jatenzo, Aveed, Kyzatrex, Andriol) deserves real attention before you combine it with much of anything, and the seven major-rated entries are where I would start. Most of the 200 ingredients on file, 121 of them, can change how the body handles this hormone through the CYP3A4 enzyme; gr…”
Reviewed by 2 · Jul 18, 2026
Taking 19-nor-dhea as Part of a Dietary Supplement Product? Check It for Interactions
We hold 12 real supplement products containing 19-nor-dhea, each one broken down to its full ingredient list — and combination products often carry several ingredients besides 19-nor-dhea. Your product may carry other ingredients that interact with Testosterone Undecanoate too, on top of 19-nor-dhea — and those would not show on this page. Find your product and we’ll check every ingredient on its label:
Where 19-nor-dhea and Testosterone Undecanoate 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.
#661 of 1,452 supplements looked up here in the last 7 days
#403 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 19-nor-dhea
What is 19-nor-dhea?
- Muscle building and bodybuilding
- Increasing strength
- Athletic performance
- Supporting hormone levels
- Body recomposition
19-nor-DHEA is a synthetic 'prohormone' marketed to bodybuilders as a precursor to nandrolone-like compounds, not a natural plant supplement. There is very little reliable human research on its safety or effectiveness, and products like it carry real risks to the liver, hormones, and heart. We do not recommend using it without close medical supervision, and it may be banned in sports and restricted by law in some places.
About Testosterone Injection
What Is Testosterone Injection Used For?
Brand names: Andriol, Aveed, Jatenzo, Kyzatrex
Testosterone injection is primarily used in men whose bodies do not produce enough testosterone on their own — a condition called hypogonadism. This includes primary hypogonadism (a problem with the testicles themselves, such as from injury, infection, or surgery) and hypogonadotropic hypogonadism (caused by problems in the brain's hormone signaling from the hypothalamus or pituitary gland). It is also used to stimulate puberty in carefully selected adolescent males with clearly delayed puberty who have not responded to other support.
Testosterone Enanthate Injection is also approved for use in women with advanced, inoperable metastatic breast cancer (specifically skeletal metastases) who are one to five years past menopause, or in premenopausal women with hormone-responsive breast cancer who have had their ovaries removed. This use should be directed by an oncologist. Aveed (testosterone undecanoate) is specifically approved for male hypogonadism only.
Other Drugs & 19-nor-dhea
Browse every other medication we’ve checked against 19-nor-dhea — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
7 interactions
No interaction 2,822 drugs checked — show the list
We also checked 19-nor-dhea against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Losartan Potassium ›
- Metoprolol ›
- Aspirin ›
- Ivermectin ›
- Rivaroxaban ›
- Rosuvastatin ›
- Escitalopram ›
- Acetaminophen ›
- Tadalafil ›
- Clopidogrel ›
- Atorvastatin ›
- Docusate ›
- Valacyclovir ›
- Abemaciclib ›
- Hydroxyurea ›
- Methamphetamine ›
- Ibuprofen ›
- Sumatriptan ›
- Semaglutide ›
- Warfarin Sodium ›
- Tirzepatide ›
- Prednisone ›
- Propranolol ›
- Bupropion ›
- Metformin ›
- Lisdexamfetamine ›
- Amoxicillin ›
- Acyclovir ›
- Lisinopril ›
- Bendamustine ›
- Amitriptyline ›
- Doxycycline ›
- Methotrexate ›
- Fluoxetine ›
- Lamotrigine ›
- Amphetamine ›
- Gabapentin ›
- Pregabalin ›
- Acetaminophen, Codeine ›
- Azithromycin ›
- Dextroamphetamine ›
- Isotretinoin ›
- Clonazepam ›
- Omeprazole ›
- Methylene Blue ›
- Quetiapine ›
- Amlodipine Besylate ›
- Duloxetine ›
- Letrozole ›
- Buspirone ›
- Citalopram ›
- Naproxen ›
- Ciprofloxacin ›
- Bisoprolol ›
Showing the 60 most looked-up of 2,822 medications checked with no known interaction — see the full 19-nor-dhea 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
Taking 19-nor-dhea and Testosterone Undecanoate Together: Common Questions
Can you take 19-nor-dhea with Testosterone Undecanoate?
How serious is the 19-nor-dhea and Testosterone Undecanoate interaction?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Still Have a Question About Testosterone Undecanoate and 19-nor-dhea?
Our pharmacists answer your medication & supplement questions — free.
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.