Thunder God Vine + Progestin, Oral Contraceptive
Progestin, Oral Contraceptive brand name: Slynd.
Thunder God Vine has a moderate interaction with Progestin, Oral Contraceptive. Theoretically, thunder god vine might increase the levels and clinical effects of CYP3A4 substrates.
Read the full interaction reportThunder God Vine and Progestin, Oral Contraceptive
Here is the interaction we found between these two, with the evidence behind it.
CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES
Why this applies to Progestin, Oral Contraceptive
Progestin, Oral Contraceptive falls under CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES — the group Thunder God Vine interacts with.
In vitro research shows that triptolide, a constituent of thunder god vine, inhibits CYP3A4 enzymes in human microsomes. This interaction has not been reported in humans.
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 birth control pill Slynd (a drospirenone progestin) is processed by a liver enzyme called CYP3A4. Lab studies suggest that triptolide, one of the active compounds in Thunder God Vine, may slow this enzyme down. In theory, that could let your progestin build up a bit higher than usual, which might mean more of the typical side effects like spotting, breast tenderness, headaches, nausea, or mood changes.
I want to be honest with you: this is only a theoretical concern based on test-tube work, and it has never actually been reported in people. Still, Thunder God Vine itself can be toxic if dosed wrong, so please don't start it without looping in your doctor or pharmacist first. They can help you weigh it safely.
- Song W, Liu M, Wu J, Zhai H, Chen Y, Peng Z. Preclinical Pharmacokinetics of Triptolide: A Potential Antitumor Drug. Curr Drug Metab. 2019;20(2):147-154. 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.
Thunder God Vine Also Interacts With Other Medications
Thunder God Vine has 848 moderate known drug interactions in our database — the Progestin, Oral Contraceptive one above is one of them. If you take anything else, check it against the full list below.
Check Another of Your Medications Against Thunder God Vine
We haven’t checked that one against Thunder God Vine yet — ask our pharmacists directly.
Covers the 2,830 medications we’ve checked against Thunder God Vine. Pick one to open its full report.
See Every Supplement That Interacts With Progestin, Oral Contraceptive
This page covers Thunder God Vine only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Progestin, Oral Contraceptive page lists 139 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Activated Charcoal (major), Grapefruit (major), St. John's Wort (major), Acacia Rigidula (moderate) and Adrafinil (moderate).
By severity: 3 major · 95 moderate · 41 minor.
From our pharmacist’s overview on the Progestin, Oral Contraceptive page
“If you take Slynd, a progestin-only birth control pill, treat this list with real care, because anything that lowers the hormone level can weaken protection against pregnancy. Slynd is cleared by the CYP3A4 enzyme, and nearly all 139 ingredients on file touch that pathway one way or another.”
Reviewed by 2 · Jul 18, 2026
Where Thunder God Vine and Progestin, Oral Contraceptive 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.
#1,132 of 1,452 supplements looked up here in the last 7 days
#179 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 Thunder God Vine
What is Thunder God Vine?
- Rheumatoid arthritis
- Lupus and autoimmune conditions
- Inflammation
- Skin conditions like psoriasis
- Immune-related disorders
Thunder God Vine is a Chinese herb studied mainly for rheumatoid arthritis and other autoimmune conditions, with some promising but limited evidence. It can be toxic if prepared or dosed improperly, and may cause serious side effects, so it should only be used under medical supervision. Avoid it during pregnancy and breastfeeding.
About Progestin-Only (drospirenone) Oral Contraceptives
What Is Progestin-Only (drospirenone) Oral Contraceptives Used For?
Brand name: Slynd
-
Progestin-only (drospirenone) oral contraceptives are used to prevent pregnancy. Progestin is a female hormone. It works by preventing the release of eggs from the ovaries (ovulation) and changing the cervical mucus and the lining of the uterus. Progestin-only oral contraceptives are a very effective method of birth control, but they do not prevent the spread of of human immunodeficiency virus (HIV, the virus that causes acquired immunodeficiency syndrome [AIDS]) and other sexually transmitted diseases.
Other Drugs & Thunder God Vine
Browse every other medication we’ve checked against Thunder God Vine — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
848 interactions
- Diltiazem ›
- Theophylline ›
- Nifedipine ›
- Metronidazole ›
- Hydrocortisone ›
- Naproxen ›
- Erythromycin ›
- Estradiol ›
- Propranolol ›
- Lidocaine ›
- Norethindrone ›
- Testosterone ›
- Verapamil ›
- Levonorgestrel ›
- Prednisone ›
- Quinidine ›
- Cyclosporine ›
- Dexamethasone ›
- Triazolam ›
- Zopiclone ›
- Ciprofloxacin ›
- Colchicine ›
- Fentanyl ›
- Oxybutynin ›
- Prednisolone ›
- Tacrolimus ›
- Temazepam ›
- Triamcinolone ›
- Budesonide ›
- Carbamazepine ›
- Clindamycin ›
- Dextromethorphan ›
- Doxorubicin ›
- Fluticasone ›
- Miconazole ›
- Acetaminophen ›
- Buprenorphine ›
- Conjugated Estrogens ›
- Diazepam ›
- Everolimus ›
- Ivabradine ›
- Lofepramine ›
- Medroxyprogesterone ›
- Medroxyprogesterone Acetate ›
- Nortriptyline ›
- Rifampin ›
- Testosterone Undecanoate ›
- Aripiprazole ›
- Bendamustine ›
- Betamethasone ›
- Caffeine (otc Drug) ›
- Ciclesonide ›
- Cimetidine ›
- Clonazepam ›
- Cyclobenzaprine ›
- Dapsone ›
- Desipramine ›
- Erythromycin Ethylsuccinate ›
- Erythromycin Stearate ›
- Etoposide ›
Showing 60 of 848 moderate interactions — see all 848 on the Thunder God Vine page.
No interaction 1,981 drugs checked — show the list
We also checked Thunder God Vine against these medications and found no known interaction in our sources. Open any page to confirm.
- Levothyroxine ›
- Methylphenidate ›
- Ivermectin ›
- Aspirin ›
- Rosuvastatin ›
- Metoprolol ›
- Escitalopram ›
- Methamphetamine ›
- Tirzepatide ›
- Isotretinoin ›
- Ibuprofen ›
- Docusate ›
- Sumatriptan ›
- Valacyclovir ›
- Hydroxyurea ›
- Semaglutide ›
- Metformin ›
- Lisdexamfetamine ›
- Amphetamine ›
- Methotrexate ›
- Amoxicillin ›
- Lisinopril ›
- Levothyroxine, Liothyronine ›
- Bupropion ›
- Doxycycline ›
- Azithromycin ›
- Pregabalin ›
- Lamotrigine ›
- Dextroamphetamine ›
- Acyclovir ›
- Gabapentin ›
- Duloxetine ›
- Methylene Blue ›
- Candesartan Cilexetil ›
- Amoxicillin, Clavulanate Potassium ›
- Bisoprolol ›
- Acetylsalicylic Acid ›
- Ezetimibe ›
- Cyclopentolate ›
- Cephalexin ›
- Insulin Degludec, Liraglutide ›
- Thyroid Hormone ›
- Mannitol ›
- Levetiracetam ›
- Calcium Oxybate, Magnesium Oxybate, Potassium Oxybate, Sodium Oxybate ›
- Carbidopa, Levodopa ›
- Levodopa ›
- Alginic Acid, Aluminum Hydroxide ›
- Acetaminophen, Dextromethorphan, Doxylamine ›
- Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide ›
- Spironolactone ›
- Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide ›
- Mitomycin ›
- Valsartan ›
- Magnesium Hydroxide (otc Drug) ›
- Sacubitril, Valsartan ›
- Atenolol, Chlorthalidone ›
- Venlafaxine ›
- Bupivacaine, Meloxicam ›
- Canagliflozin, Metformin ›
Showing the 60 most looked-up of 1,981 medications checked with no known interaction — see the full Thunder God Vine 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 Thunder God Vine and Progestin, Oral Contraceptive Together: Common Questions
Can you take Thunder God Vine with Progestin, Oral Contraceptive?
How serious is the Thunder God Vine and Progestin, Oral Contraceptive 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.