Types of Pregnenolone: Forms & Bioavailability

SupplementScience.ai Editorial Team·Evidence-Based Supplement Research

Published Mar 11, 2026

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Forms Comparison

Form	Bioavailability	Best For
Micronized Pregnenolone Capsules	Moderate	General supplementation — standard oral form
Sublingual Pregnenolone	High	Enhanced absorption — bypasses first-pass metabolism for faster onset
Pregnenolone Cream	Moderate	Transdermal delivery — steady absorption, lower peak levels

Micronized Pregnenolone Capsules

Bioavailability: Moderate. Best for: General supplementation — standard oral form.

Sublingual Pregnenolone

Bioavailability: High. Best for: Enhanced absorption — bypasses first-pass metabolism for faster onset.

Pregnenolone Cream

Bioavailability: Moderate. Best for: Transdermal delivery — steady absorption, lower peak levels.

Full Pregnenolone Guide

References

Marx CE, Keefe RS, Buchanan RW, Hamer RM, Kilts JD, Bradford DW, Strauss JL, Naylor JC, Payne VM, Lieberman JA, Savitz AJ, Leimone LA, Dunn L, Porcu P, Morrow AL, Shampine LJ (2009). Proof-of-concept trial with the neurosteroid pregnenolone targeting cognitive and negative symptoms in schizophrenia. Neuropsychopharmacology. DOI PubMed
Brown ES, Park J, Marx CE, Hynan LS, Gardner C, Davila D, Nakamura A, Sunderajan P, Lo A, Holmes T (2014). A randomized, double-blind, placebo-controlled trial of pregnenolone for bipolar depression. Neuropsychopharmacology. DOI PubMed