ResearchSafe

Pregnenolone (Pregnenolone (Mother Hormone))

Category: Hormone Replacement. Status: OTC supplement / Prescribed.

The master precursor hormone from which all steroid hormones are derived. Often called the "mother hormone," it supports cognitive function, mood, and hormonal balance. Popular in telemedicine anti-aging protocols.

How it works

Acts as the primary substrate for steroidogenesis (cortisol, DHEA, progesterone, testosterone, estrogen). Also functions as a neurosteroid, enhancing memory and NMDA receptor activity.

Key facts

  • Molecular weight: 316.48 Da
  • Half-life: ~1-3 hours (oral)
  • Bioavailability: ~60% oral
  • Storage: Room temperature.

Dosing overview

  • Typical dose: 50-100 mg
  • Frequency: Daily (morning)
  • Duration: Ongoing with monitoring
  • Route: Oral capsule or sublingual

Protocol notes

  • Most start at 25-50 mg in the morning and adjust upward toward 100 mg based on response and labs.
  • Sublingual dosing is used for faster/cleaner absorption than oral capsules.
  • Because it sits upstream of all steroid hormones, effects can be subtle and individual.

Reported benefits

  • Hormone precursor balance
  • Memory enhancement
  • Mood improvement
  • Joint support
  • Myelin sheath repair
  • Stress resilience

Possible side effects

  • Headache
  • Irritability
  • Insomnia
  • Acne
  • Overstimulation

Research

  • Pregnenolone and cognitive performance (2021): Improved verbal memory and attention scores in adults with low baseline levels over 8-week trial.
  • Neurosteroid replacement in aging (2020): Restoration of youthful pregnenolone levels correlated with improved sleep architecture and reduced anxiety.

Community reviews of Pregnenolone

Rated 4.5 out of 5 from 4 community reviews by ResearchSafe members.

  • steady_hand_jen rated it 4/5 - Genuinely effective after 6 weeks: Been using Pregnenolone for about 6 weeks and the results are clear. Not overnight dramatic, but a steady, consistent improvement that became undeniable by the end of the first month. The mechanism makes sense based on what I have read in the literature, and my subjective experience matches the expected timeline. Benefits built gradually and plateaued at a good level. Side effects were minimal to none at the dose I used. Followed proper protocols for sourcing, storage, and administration. Would recommend to others who have done their research and have realistic expectations.
  • cycle_sage rated it 5/5 - Noticed clear benefits within weeks: Added Pregnenolone to my protocol about 6 weeks ago and it has earned its place. The benefits became noticeable around week 2-3 and have been consistent since. What I appreciate about this compound is the predictability. It does what the research suggests it should do, at roughly the timeline you would expect. No surprises, no dramatic swings, just steady improvement. No notable side effects to report at my dose. Sourcing is always the challenge with research compounds, insist on third-party testing. Storage and reconstitution per standard protocols. Plan to continue.
  • loading_phase_lucy rated it 4/5 - Worth adding to the protocol: Pregnenolone has been a worthwhile addition. I am data-driven and tracked relevant markers before, during, and after. The improvement is measurable and correlates with the intervention timeline. What sets this apart from some compounds I have tried is the consistency. Benefits did not fluctuate wildly or disappear. They built up and maintained. That gives me confidence in the mechanism. Tolerance has been excellent. Nothing in my bloodwork or subjective experience raised any flags. This is the kind of compound that does its job quietly without causing problems. Exactly what you want.
  • grinder_derek rated it 5/5 - Helped My Brain Fog During Long School Days: I tried pregnenolone for about 4 weeks because I was getting this annoying fog by the third lesson, especially after long days in Germany where the winter light is poor and I sit too much. For me it seemed to make my mind feel cleaner and a bit more stable, and my training sessions also felt less flat. Could be partly placebo, but the change was real enough that I kept noticing it. 5 out of 5 from my side.

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Community discussions about Pregnenolone

Research and educational reference only. Not medical advice.