hormoneNot FDA-approvedOTC supplementSold in the US as an unregulated dietary supplement; none of the cited trials used an FDA-approved drug productNo indication studied in these trials (schizophrenia, bipolar depression, chronic low back pain) has received FDA approval for pregnenolone
PregnenoloneBenefits, Dosage & Interactions
Pregnenolone is an endogenous steroid hormone that serves as a precursor for many other steroid hormones in the body, including progesterone, DHEA, androgens (like testosterone), and estrogens. It is synthesized primarily from cholesterol within the adrenal glands, gonads, brain, and other tissues.
How much Pregnenolone do people take?
Oral doses of 200–500 mg/day were used in the schizophrenia and bipolar-depression trials; the low-back-pain trial titrated up to 500 mg/day. Route reported: Oral, taken as a capsule in every cited trial. Frequency reported: Once daily in three trials; the bipolar trial used a titration schedule over 12 weeks. These are amounts documented in the cited studies and labels for Pregnenolone — they are reported for reference, not a recommendation. Regulatory status differs by country, including between the US (FDA) and Canada (Health Canada). Confirm any amount with a licensed clinician before you take it.
See the full reported protocol and its sourcesResearched by DoseRoutine Research TeamReviewed for accuracy by Nicholas Alexander, RSE, SO, PMPLast updated Educational reference only — not medical advice. Always confirm dosing and safety decisions with a licensed clinician.
Evidence: Strong — 4 human randomized trials published.
Evidence strengthStrong · 4/4
PreclinicalStrong human evidence
4 human randomized trials published.
Plasma half-life
Not established
Typical timing
in the morning
Default unit
mg
What published protocols report
Ranges documented in the literature, shown for reference. DoseRoutine does not recommend an amount — your prescriber or the product label sets the dose.
- Reported amounts
- Oral doses of 200–500 mg/day were used in the schizophrenia and bipolar-depression trials; the low-back-pain trial titrated up to 500 mg/day[1][2][3][4]
Reported for Pregnenolone in the cited sources. Published ranges are not dosing advice.
References & evidence
Documents the Pregnenolone entry is written from. Each number matches an inline marker above.
- [1]Proof-of-concept randomized controlled trial of pregnenolone in schizophreniaMarx CE, Bradford DW, Hamer RM, Naylor JC, Allen TB, Lieberman JA, Strauss JL, Kilts JD · Psychopharmacology · 2014 · Peer-reviewed · PMID 25030803
- [2]A randomized, double-blind, placebo-controlled trial of pregnenolone for bipolar depressionBrown ES, Park J, Marx CE, Hynan LS, Gardner C, Davila D, Nakamura A, Sunderajan P, Lo A, Holmes T · Neuropsychopharmacology · 2014 · Peer-reviewed · PMID 24917198
- [3]Effect of Pregnenolone vs Placebo on Self-reported Chronic Low Back Pain Among US Military Veterans: A Randomized Clinical TrialNaylor JC, Kilts JD, Hulette CM, Steffens DC, Blazer DG, Ervin JF, Strauss JL, Allen TB, Massing MW, Payne VM, Youssef NA, Shampine LJ, Marx CE · JAMA Network Open · 2020 · Peer-reviewed · PMID 32119096
- [4]Pregnenolone as an adjunct to risperidone for treatment of women with schizophrenia: A randomized double-blind placebo-controlled clinical trialKashani L, Omidvar T, Farazmand B, Modabbernia A, Ramzanzadeh F, Ahmadi Abhari SA, Tabrizi M, Ashrafi M, Akhondzadeh S · Journal of Psychiatric Research · 2017 · Peer-reviewed · PMID 28688338
References & Evidence
Sources on this page that document Pregnenolone dosing, timing and safety.
- [1]National Center for Biotechnology Information View source
Educational information only — not medical advice. Dose ranges vary by person, indication and prescriber.
What is Pregnenolone studied for?
What is Pregnenolone?Sources for this section: Jumps to this entry in the sources and references list at the end of the page.
Pregnenolone is an endogenous steroid hormone that serves as a precursor for many other steroid hormones in the body, including progesterone, DHEA, androgens (like testosterone), and estrogens. It is synthesized primarily from cholesterol within the adrenal glands, gonads, brain, and other tissues. Due to its role as a "mother hormone," pregnenolone is involved in a wide range of physiological processes. While naturally produced, it is also available as a dietary supplement. Interest in pregnenolone stems from its potential roles in neurosteroid activity and hormone balance, particularly as levels may decline with age (NIH ODS).
What does the research say about Pregnenolone?
Tap a section to expand.
Pregnenolone's primary mechanism of action involves its conversion into other steroid hormones. Once synthesized, it can be metabolized along several pathways. One major pathway converts pregnenolone into progesterone, which then can be further converted into other corticosteroids or androgens. Another significant pathway involves its conversion into dehydroepiandrosterone (DHEA), from which androgens and estrogens can be derived. In addition to its role as a precursor, pregnenolone itself, along with one of its sulfonated forms (Pregnenolone sulfate), is considered a neurosteroid. This means it is synthesized in the brain and can directly modulate neuronal activity. Pregnenolone and pregnenolone sulfate interact with various receptors in the brain, including N-methyl-D-aspartate (NMDA) receptors, GABA-A receptors, and sigma-1 receptors, influencing neurotransmission and potentially cognitive function and mood. These direct actions are distinct from its role as a general precursor (DrugBank, PubChem).
Source for this section: Sources for How does Pregnenolone work?: Jumps to this entry in the sources and references list at the end of the page.
Research on the potential benefits of pregnenolone is ongoing, with some studies exploring its role in various areas:
* **Cognitive Function:** As a neurosteroid, pregnenolone has been investigated for its potential effects on memory and cognitive processes. Some animal studies suggest pregnenolone may enhance learning and memory, and preliminary human studies have explored its impact on cognitive performance, particularly in aging populations (Examine.com).
* **Mood and Well-being:** Due to its influence on neurosteroid pathways, pregnenolone has been studied in contexts related to mood regulation. Some research suggests a potential modulatory role in conditions associated with altered mood, though more robust human trials are needed to confirm these effects (Cochrane).
* **Hormone Balance:** Given its position as a precursor to many other steroid hormones, pregnenolone is sometimes used with the idea that it might help normalize or support the production of other hormones in the body. However, the exact impact on downstream hormones can be complex and varies by individual. Claims about its ability to directly 'balance' hormones should be approached with caution, as the body's conversion pathways are tightly regulated (MedlinePlus).
* **Aging-Related Decline:** Pregnenolone levels in the body tend to decrease with age, leading to interest in its potential to counteract some age-related changes. This area of research is exploratory and its efficacy in reversing or preventing aging effects is not definitively established (NIH ODS).
Evidence for the benefits of pregnenolone is largely derived from animal studies, *in vitro* research, and preliminary human trials. While some studies show promising results regarding cognitive function and mood, especially preclinical work, large-scale, well-controlled human clinical trials are often limited or have yielded mixed results. For example, some small human studies have explored pregnenolone's impact on memory, but broader conclusions about its efficacy for general cognitive enhancement in healthy individuals cannot be drawn from the current evidence (Examine.com). Research into its role in psychological conditions has also shown varied outcomes, with some preliminary reports suggesting potential benefits, while reviews indicate insufficient evidence for widespread clinical application (Cochrane). Most of the robust understanding of pregnenolone comes from its known biochemical role as a steroid precursor and its neurosteroid properties, rather than conclusive evidence for specific clinical outcomes when supplemented (DrugBank). It is important to note that the FDA has not approved pregnenolone as a drug for any medical condition, and its use as a dietary supplement means it is not subject to the same rigorous testing as prescription medications.
While generally considered to have a low incidence of severe side effects, pregnenolone can cause adverse reactions, particularly at higher doses or with prolonged use. Potential side effects may include:
* Insomnia or sleep disturbances
* Irritability or anxiety
* Headaches
* Acne or skin changes
* Hair loss
* Heart palpitations or irregular heartbeat
* Changes in menstrual cycle in women
* Increased facial hair or deepening of voice in women
* Liver dysfunction (rarely reported)
Because pregnenolone is a precursor to other hormones, prolonged use or high doses can theoretically affect the balance of downstream hormones, potentially leading to undesirable effects on sex hormones or cortisol levels. Monitoring by a healthcare professional is advisable if experiencing any side effects. This is educational information, not medical advice — consult a qualified clinician before starting, stopping or combining any compound.
Individuals should exercise caution when considering pregnenolone supplementation. Pregnant or breastfeeding women should avoid pregnenolone due to potential hormonal effects on the fetus or infant. Those with hormone-sensitive conditions, such as prostate cancer, breast cancer, ovarian cancer, or endometriosis, should not use pregnenolone without strict medical supervision, as it could potentially exacerbate these conditions by altering hormone levels. Individuals with a history of seizures, psychiatric conditions, or cardiovascular disease should also consult a healthcare provider before use, as pregnenolone may interact with existing conditions or medications. It is crucial to use pregnenolone only under the guidance of a licensed clinician who can assess potential risks and interactions. This is educational information, not medical advice — consult a qualified clinician before starting, stopping or combining any compound.
Pregnenolone is contraindicated in individuals with known hypersensitivity to the compound or any of its components. It should not be used by individuals diagnosed with hormone-sensitive cancers, including but not limited to prostate cancer, breast cancer, and ovarian cancer, due to its role as a precursor to sex hormones. Pregnant and breastfeeding women are also advised against using pregnenolone. Similarly, individuals with certain psychiatric disorders, such as bipolar disorder or schizophrenia, or a history of seizures should avoid pregnenolone unless specifically directed and monitored by a healthcare professional due to its neurosteroid properties that can influence brain activity. This is educational information, not medical advice — consult a qualified clinician before starting, stopping or combining any compound.
Pregnenolone may interact with various medications and other supplements. Due to its role as a precursor to other steroid hormones, it should not be mixed with other hormone replacement therapies or medications that affect hormone levels, such as oral contraceptives, testosterone, DHEA, or estrogen therapies, without medical supervision. It may also interact with psychiatric medications, including antidepressants and antipsychotics, potentially altering their effects or increasing side effects, given its neurosteroid activity. Medications metabolized by the liver’s cytochrome P450 enzymes could also be affected, as pregnenolone can influence these enzyme systems. Individuals on blood thinners (anticoagulants) or medications for heart conditions, diabetes, or thyroid disorders should consult a healthcare provider before using pregnenolone, as interactions are possible. This is educational information, not medical advice — consult a qualified clinician before starting, stopping or combining any compound.
Pregnenolone is commonly studied with a typical timing in the morning. This timing is often suggested to align with the body's natural diurnal rhythm of hormone production and to minimize potential sleep disturbances, as some individuals report increased alertness or insomnia with evening doses. It can be taken either with or without food. Individual needs vary — talk to a licensed clinician.
Source for this section: Sources for When should you take Pregnenolone?: Jumps to this entry in the sources and references list at the end of the page.
Put it into practice
Reading about Pregnenolone is the first step — DoseRoutine helps you act on it. These free tools turn what you just learned into a routine.
What interacts with Pregnenolone?
| Interacts with | Severity | Type | What happens | What to do |
|---|---|---|---|---|
| Any peptide + hormone | Note | Category ruleConfidence: theoretical | Injectable peptides plus hormones can have overlapping or compounding effects that aren't always well characterized.Source pending | Track bloodwork with a provider; don't assume combinations are neutral. |
Frequently asked questions about Pregnenolone
Pregnenolone is a naturally occurring steroid hormone that acts as a precursor to many other hormones in the body, including progesterone, DHEA, androgens, and estrogens. It is also considered a neurosteroid, meaning it can directly affect brain function.
People may take pregnenolone supplements with hopes of supporting cognitive function, enhancing mood, or addressing age-related declines in hormone levels. However, scientific evidence supporting these uses is still developing, and it is not approved by the FDA for any medical conditions.
Yes, potential side effects can include insomnia, irritability, headaches, acne, heart palpitations, and changes in hormone levels, which may affect menstrual cycles or lead to other hormonal imbalances. It is important to discuss these with a healthcare provider.
Yes, pregnenolone can interact with hormone replacement therapies, psychiatric medications, blood thinners, and other drugs. It's crucial to consult a licensed clinician before combining pregnenolone with any other medications or supplements.
Pregnenolone is a compound primarily found in dietary supplements, not as a prescription medication. Doses are user-directed and must be set by a licensed clinician, as there are no universally established therapeutic doses recognized by regulatory bodies for specific conditions.
Pregnenolone is typically taken in the morning. Amounts for this hormone vary by protocol, formulation and individual response, so follow the dose your clinician or the product label specifies.
Whether Pregnenolone fits alongside testosterone replacement therapy depends on the protocol — dose, ester and ancillaries such as HCG or anastrozole — and on current bloodwork. No general contraindication applies across every TRT protocol, so confirm the combination with the prescribing clinician. See the free TRT interaction reference: https://doseroutine.com/trt-supplement-interactions
"Peptides" is not one category — healing peptides, GLP-1 agonists, growth-hormone secretagogues and melanocortins each behave differently next to Pregnenolone. Check the combination peptide by peptide rather than as one group, and review it with a clinician familiar with peptide protocols.
Published frequency for Pregnenolone varies by protocol and formulation, so the label or prescription is what sets it. It is typically taken in the morning. Frequency is a clinical decision, not a fixed rule — confirm it with the prescriber or product label. Comparison of apps that keep a schedule like this: https://doseroutine.com/best-dose-tracking-apps
The effect of a missed dose of Pregnenolone depends on the protocol and formulation you are on. Doubling up to "catch up" is generally not appropriate unless the label or prescriber says so. Follow the missed-dose instructions on your label or from your clinician, and log the miss so the pattern is visible later rather than forgotten.
For Pregnenolone the useful record is the dose, the time it was actually taken, and what else was taken in the same window. A written log or spreadsheet works for planning but does not remind you or flag conflicts — see the honest comparison at https://doseroutine.com/vs/spreadsheet and the wider roundup at https://doseroutine.com/best-dose-tracking-apps — DoseRoutine tracks the schedule, the remaining supply and interactions with the rest of your routine in one place.
Oral doses of 200–500 mg/day were used in the schizophrenia and bipolar-depression trials; the low-back-pain trial titrated up to 500 mg/day. Route reported: Oral, taken as a capsule in every cited trial. Frequency reported: Once daily in three trials; the bipolar trial used a titration schedule over 12 weeks. These are amounts documented in the cited studies and labels for Pregnenolone — they are reported for reference, not a recommendation. Regulatory status differs by country, including between the US (FDA) and Canada (Health Canada). Confirm any amount with a licensed clinician before you take it.
Sources cited on this page
Specific documents referenced by the numbered markers above. Each number matches the marker in the text.
- PubChem CID 15032(opens in a new tab)National Center for Biotechnology Information · pubchem.ncbi.nlm.nih.gov/compound/15032
Verify at
Publisher search links for Pregnenolone. These are places to check the information — they are not citations, so they are not numbered.
- Cochrane Library(publisher search, opens in a new tab)Cochrane · publisher search
- DrugBank(publisher search, opens in a new tab)DrugBank Online · publisher search
- Examine.com(publisher search, opens in a new tab)Examine.com · publisher search
- Mayo Clinic(publisher search, opens in a new tab)Mayo Clinic · publisher search
- NIH Office of Dietary Supplements(publisher search, opens in a new tab)National Institutes of Health · publisher search
- PubMed literature search(publisher search, opens in a new tab)National Library of Medicine · publisher search
- DailyMed labeling archive(publisher search, opens in a new tab)U.S. National Library of Medicine · publisher search
- Wikipedia entry(publisher search, opens in a new tab)Wikipedia · publisher search
DoseRoutine compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician. How we source and review this information.
What is the short answer on Pregnenolone?
Plain-text summary, safe to quote verbatim:
Pregnenolone is an endogenous steroid hormone that serves as a precursor for many other steroid hormones in the body, including progesterone, DHEA, androgens (like testosterone), and estrogens. It is synthesized primarily from cholesterol within the adrenal glands, gonads, brain, and other tissues.
Source: DoseRoutine — https://doseroutine.com/library/pregnenolone
Pregnenolone cheat sheet
DoseRoutine cheat sheet · Hormone
Pregnenolone
Pregnenolone is an endogenous steroid hormone that serves as a precursor for many other steroid hormones in the body, including progesterone, DHEA, androgens (like testosterone), and estrogens. It is synthesized primarily from cholesterol within the adrenal glands, gonads, brain, and other tissues.
Evidence
Strong
4 human randomized trials published.
Studied range
Oral doses of 200–500 mg/day were used in the schizophrenia and bipolar-depression trials; the low-back-pain trial titrated up to 500 mg/day
Route
Oral, taken as a capsule in every cited trial
Frequency studied
Once daily in three trials; the bipolar trial used a titration schedule over 12 weeks
Timing
in the morning
Not FDA-approvedOTC supplementSold in the US as an unregulated dietary supplement; none of the cited trials used an FDA-approved drug productNo indication studied in these trials (schizophrenia, bipolar depression, chronic low back pain) has received FDA approval for pregnenoloneBrain
Key references
- Proof-of-concept randomized controlled trial of pregnenolone in schizophrenia (2014)
- A randomized, double-blind, placebo-controlled trial of pregnenolone for bipolar depression (2014)
- Effect of Pregnenolone vs Placebo on Self-reported Chronic Low Back Pain Among US Military Veterans: A Randomized Clinical Trial (2020)
Studied ranges, not dosing advice. Not medical advice — talk to a clinician. doseroutine.com/library/pregnenolone
Cite this page
Using this in an article, AI answer, or research note? Please attribute:
DoseRoutine. (2026). Pregnenolone — Overview, Benefits & Side Effects. Retrieved from https://doseroutine.com/library/pregnenolone
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