Pregnenolone

Supplements · Hormone Support · Supplement, Typed Supps

Called the “mother hormone” because your body turns it into almost every other steroid hormone you have.

Stage by stage

Intake (Tablet): Absorbed efficiently, similar to other steroid hormone precursors.
Small intestine (Efficient absorption): Absorbed alongside standard digestion.
Adrenal glands & tissues (Converted to downstream hormones): Converted into DHEA, progesterone, cortisol, and other steroid hormones depending on the body’s needs.
Hormone-dependent systems (Broad, unpredictable reach): Because it sits upstream of so many hormones, its downstream effects are harder to predict or target than most supplements.

What the evidence supports

Improving memory, mood or energy — insufficient evidence. Despite being sold for these, controlled evidence is weak and inconsistent, and benefits are not well defined. Some early trials in mood disorders show signals, but nothing is established for general use.
Evidence on Long-term safety of supplemental doses — insufficient evidence. It is a steroid-hormone precursor taken without monitoring. Short trials at high doses report mainly mild effects, but long-term safety and effects in pregnancy are unknown.

Typical dose

Sold widely at 5–50 mg; research has used far higher 300–500 mg doses

Upper limit: No established UL; because it is a hormone precursor, more is not safer

Timing

With food, and ideally under medical guidance given its hormonal nature.

Time to effect

Weeks: Downstream hormone changes, which then affect symptoms indirectly.

Medication interactions

Hormone therapies (oestrogen, testosterone, contraceptives): As a precursor to steroid hormones, it may add to or alter their effects. (moderate)

Common myth

“Pregnenolone is a harmless memory supplement.” In reality: As a precursor to nearly every steroid hormone in the body, its effects are broad and not fully predictable — genuinely worth medical guidance rather than casual self-experimentation.