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Compound

Pregnenolone

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Pregnenolone. Master steroid precursor; small doses studied for cognition and PTSD.

How it works. Precursor to all steroid hormones; neurosteroid activity at NMDA/GABA.

What the research supports. 1 graded claims. Strongest: Improves negative symptoms in schizophrenia (limited).

How much to take. Typical dose: 10–50 mg.

Side effects and interactions. 1 medication interaction listed. No serious side effects listed at normal doses.

Stacking. Pairs well with Omega-3 (EPA/DHA), Alpha-GPC or CDP-choline.

Common forms. Available as Pregnenolone.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Pregnenolone. Anecdotes are not medical advice.

Pregnenolone. Master steroid precursor; small doses studied for cognition and PTSD.

Molecular structureC21H32O2 · 316.5 g/mol

What it is

Master steroid precursor; small doses studied for cognition and PTSD.

Food sources

Synthesized

Goals

Hormone OptimizationBrain & CognitiveMood & Anxiety

How it works

Precursor to all steroid hormones; neurosteroid activity at NMDA/GABA.

Pathways

  • Steroidogenesis
  • Neurosteroid

Effects

  • +Mood & cognition supports

What the research supports

Improves negative symptoms in schizophrenialimited

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
10–50 mg
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodWith a meal containing fat for fat-soluble compounds; otherwise either.
Best formMost evidence is based on the pregnenolone form.
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Side effects & interactions

Common side effects

  • Headache

Medication interactions

Hormonal therapiesmoderate

Additive.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • Omega-3 (EPA/DHA)Membrane fluidity and neuronal signaling support.
  • Alpha-GPC or CDP-cholineProvides choline substrate for acetylcholine synthesis.

Common forms

  • Pregnenolone

Key studies

8 studies cited in total.

PubMed: Pregnenolone — Improves negative symptoms in schizophrenia ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Pregnenolone and "Improves negative symptoms in schizophrenia". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Pregnenolone — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Pregnenolone and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Pregnenolone — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Pregnenolone and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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