Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Pregnenolone Ingredients & Drug Interactions

by BulkSupplements.com

Pregnenolone label
See full label image
Powder Category: Non-nutrient/non-botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Pregnenolone 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

Pregnenolone is a dietary supplement by BulkSupplements.com with 1 active ingredient. Its ingredients are commonly taken for memory and cognitive support, anxiety and stress, anti-aging.Based on those ingredients, 82 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Pregnenolone. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Pregnenolone by BulkSupplements.com

Ask about any prescription or over-the-counter medication and we check it for interactions with Pregnenolone by BulkSupplements.com — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Pregnenolone by BulkSupplements.com

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Sep 3, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: pregnenolone, a hormone precursor that your body can convert into several other steroid hormones, including estrogen, progesterone, testosterone, and progestins. There are no inactive ingredients listed for this powder form.

Does it work?

Couldn't assess
Evidence for Intended Use · database check
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

This is a single-ingredient Pregnenolone product and its label doesn't state a use — see Pregnenolone's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence on pregnenolone for the conditions we have data on — alcohol use disorder, Alzheimer's disease, autism spectrum disorder, back pain, and bipolar disorder — is insufficient. That means the research available isn't robust enough yet to say whether it works for any of these.

If you're considering pregnenolone for a specific health goal, talk it over with your doctor or pharmacist about what the current evidence actually shows.

The evidence, ingredient by ingredient Pregnenolone

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Pregnenolone is generally well tolerated when taken by mouth, but it is a hormone with limited human safety data — that's why it should only be used under the guidance of a healthcare professional. The most commonly reported side effects include acne, agitation, diarrhea, drowsiness, excitement, hair loss, skin abscess, and sweating.

A few people have reported tremor, depressive mood, increased appetite, or anorexia, though it's unclear in all cases whether pregnenolone was responsible. The safety data advises against using pregnenolone during pregnancy due to unknown risks.

There isn't enough safety information available during breastfeeding either, so avoid it while nursing. Talk with your own doctor or pharmacist about whether this supplement fits your personal situation.

Side effects, ingredient by ingredient Pregnenolone

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Pregnenolone.
  • The most serious interaction on file is rated Moderate.
  • For scale: 82 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking pregnenolone, check with your doctor or pharmacist if you take estrogens, progestins, progesterone, or testosterone — pregnenolone may amplify their effects. Also double-check if you're on benzodiazepines (such as diazepam), as pregnenolone may reduce how well they work.

These are Moderate-severity interactions that warrant personalized review.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Pregnenolone is a hormone precursor with moderate interactions across a broad range of hormone-based medications and some sedative drugs. It's generally well tolerated, but the evidence for its effectiveness on the conditions we have data for is insufficient.

If you take hormone therapies or benzodiazepines, or if you're pregnant or breastfeeding, you'll want to clear it with your own doctor or pharmacist before starting.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Apr 23, 2024.

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 Pregnenolone, straight from the product label.

Brand BulkSupplements.com
Barcode (UPC) 849720028808
Net contents 500 Gram(s); 17.6 Ounce(s)
Market status On market
Date entered into DSLD Apr 23, 2024
DSLD ID 311636
Product type Non-nutrient/non-botanical
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Dairy 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 Pregnenolone by BulkSupplements.com, 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:
20 mg
Maximum serving Sizes:
20 mg
Servings per container
25000
UPC/BARCODE
849720028808
IngredientAmount% DV
Pregnenolone20 mg--

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.
Brand IP Statement(s)

BulkSupplements.com Clean & Pure Bulk Supplements

Storage

Store in a dry, cool place Contents are sold by weight, not volume. Settling may occur.

FDA Disclaimer Statement

Warning: This product is not intended to diagnose, treat, cure, or prevent any disease.

Precautions

Always consult a physician before taking any dietary supplement.

Keep out of reach of children.

Do not exceed 50 mg per day. Do not take for more than 30 days without the approval of a healthcare professional.

Formulation

Free of: Added sugar, soy, dairy, yeast, gluten, additives

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take 20 mg once or twice daily, or as directed by a physician.

General Statements

Use an accurate milligram scale. NewItem

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

See for yourself

Pregnenolone by BulkSupplements.com label

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

Pregnenolone 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 Pregnenolone by BulkSupplements.com

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

Serving size20 mg Dosage formPowder Servings per container25000 Amounts shown are per serving.

Pregnenolone

Interacts with
82 drugs
20 mg per serving

Pregnenolone is a hormone your body makes naturally and a building block for other hormones like cortisol, DHEA, estrogen, and testosterone. It is sol...

Pregnenolone monograph & interactions
Interaction report

Pregnenolone by BulkSupplements.com Drug Interactions

Want to check YOUR meds against Pregnenolone?

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
82Drugs
82 Moderate

Ingredients driving the most interactions

Pregnenolone 82

Individual Drug Interactions

The ingredients in Pregnenolone interact with 82 drugs. Click any drug to see the details.

1 of the 1 ingredient in Pregnenolone interact with drugs. Each result below shows which ingredient is responsible. Pregnenolone

Each ingredient & the kinds of drugs it affects

For each ingredient in Pregnenolone 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.

Pregnenolone5 drug types · 82 drugs

Benzodiazepines

Concomitant use of pregnenolone may reduce the effects of benzodiazepines.
Very preliminary clinical research shows that chronic use of pregnenolone reduces sedative effects of diazepam when compared with chronic use of placebo. This effect may be related to the activity of pregnenolone at GABAA receptors.

Likelihood Probable Evidence B
Estrogens

Theoretically, taking pregnenolone might enhance the effects of estrogens.
Pregnenolone is a precursor for several steroid hormones, including estrogens.

Likelihood Possible Evidence D
Progesterone

Theoretically, taking pregnenolone might enhance the effects of progesterone.
In humans, some research shows that oral administration of pregnenolone can increase levels of progesterone. However, other research shows no effect on progesterone levels. It is possible the impact of pregnenolone on progesterone levels may be dose dependent.

Likelihood Possible Evidence D
Progestin

Theoretically, taking pregnenolone might enhance the effects of progestin.
Pregnenolone is a precursor for several steroid hormones, including progestin.

Likelihood Possible Evidence D
Testosterone

Theoretically, taking pregnenolone might enhance the effects of testosterone.
Pregnenolone is a precursor for several steroid hormones, including testosterone. However, preliminary clinical research shows that taking pregnenolone 30-500 mg orally daily for up to 8 weeks does not affect testosterone levels.

Likelihood Possible Evidence D
Pregnenolone full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Pregnenolone, from the product label.

BulkSupplements.com

See all BulkSupplements.com products
Name
BulkSupplements.com
Street Address
7511 Eastgate Rd
City
Henderson
State
NV
ZipCode
89011
Web Address
BulkSupplements.com
Pharmacist Counseling Corner

Pregnenolone by BulkSupplements.com: Common Questions

Does Pregnenolone by BulkSupplements.com interact with any medications?
Yes. Based on its ingredients, Pregnenolone has a known interaction with 82 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Pregnenolone 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.
Can I take pregnenolone if I'm pregnant or breastfeeding?
No. The safety data advises against pregnenolone during pregnancy due to unknown risks, and there isn't enough safety information to recommend it while breastfeeding. Talk with your own doctor or pharmacist about your individual situation.
What are the most common side effects?
Acne, agitation, diarrhea, drowsiness, excitement, hair loss, skin abscess, and sweating are the most commonly reported. A few people have also experienced tremor, depressive mood, or changes in appetite, though it's not always clear pregnenolone was the cause.
Is pregnenolone proven to work for Alzheimer's disease or bipolar disorder?
The evidence available to us is insufficient for those conditions. That means the research hasn't been robust enough yet to say whether it works. Your doctor or pharmacist can give you the best picture of what current research actually shows.
Does pregnenolone have any inactive ingredients or fillers?
No — this powder contains only pregnenolone; there are no listed inactive ingredients.
How does pregnenolone interact with birth control or hormone replacement therapy?
Pregnenolone is a precursor to estrogens and progestins, so it may enhance the effects of these hormones. Because birth control and HRT are dosed with narrow margins, even amplification can matter. Check with your own doctor or pharmacist before combining them.

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

Not sure if Pregnenolone is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.

Pregnenolone label
Go deeper

The Full Monographs Behind Pregnenolone’s Ingredients

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

Herb & supplement monograph

Pregnenolone

Interacts with 82 drugs

Pregnenolone is a hormone your body makes naturally and a building block for other hormones like cortisol, DHEA, estrogen, and testosterone. It is sold as a supplement for memory, mood, and...

Read the full Pregnenolone monograph →
Sources

Sources & How We Checked

Pregnenolone'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 6 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.

Pregnenolone 6 references
  1. Devlin TM, ed. Textbook of Biochemistry With Clinical Correlations. third ed. New York: Wiley-Liss Inc., 1992.
  2. Fung LK, Libove RA, Phillips J, Haddad F, Hardan AY.Brief report: an open-label study of the neurosteroid pregnenolone in adults with autism spectrum disorder. J Autism Dev Disord 2014;44(11):2971-7. PubMed
  3. Brown ES, Park J, Marx CE, et al. A randomized, double-blind, placebo-controlled trial of pregnenolone for bipolar depression. Neuropsychopharmacology 2014;39(12):2867-73. PubMed
  4. Ritsner MS, Gibel A, Shleifer T, et al. Pregnenolone and dehydroepiandrosterone as an adjunctive treatment in schizophrenia and schizoaffective disorder: an 8-week, double-blind, randomized, controlled, 2-center, parallel-group trial. J Clin Psychiatry 20 PubMed
  5. Meieran SE, Reus VI, Webster R, Shafton R, Wolkowitz OM. Chronic pregnenolone effects in normal humans: attenuation of benzodiazepine-induced sedation. Psychoneuroendocrinology 2004;29(4):486-500. PubMed
  6. Marx CE, Keefe RS, Buchanan RW, et al. Proof-of-concept trial with the neurosteroid pregnenolone targeting cognitive and negative symptoms in schizophrenia. Neuropsychopharmacology 2009;34(8):1885-903. PubMed

See these in context on the Pregnenolone 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

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team