DHEA

Supplements · Hormone Support · Supplement, Typed Supps

A real hormone, not a gentle supplement — treat it that way.

Stage by stage

Intake (Tablet): Absorbed efficiently in the small intestine, since it’s a steroid hormone precursor rather than a typical nutrient.
Small intestine (Efficient absorption): Absorbed alongside standard digestion.
Liver & tissues (Converted to other hormones): Converted in the body into testosterone, oestrogen, and other downstream hormones, with the balance varying by individual and sex.
Hormone-dependent tissue (Wide-ranging effects): Because of this conversion, its effects can touch mood, muscle, bone, and reproductive tissue in ways that are harder to predict than a typical supplement.

What the evidence supports

Improving symptoms in adrenal insufficiency — moderate evidence. Reasonable evidence in people with a documented deficiency, under endocrinology care.
Improving ovarian response in fertility treatment — limited evidence. Used in some IVF protocols for diminished ovarian reserve, with mixed trial results.
Anti-ageing, energy, or body composition benefits in healthy adults — insufficient evidence. The reason it is sold, and it does not hold up. It is a hormone precursor, and taking hormones without a deficiency has consequences rather than benefits.

Typical dose

25–50 mg once daily in the morning is the replacement dose used in adrenal insufficiency, and that is the one setting where a dose is actually established. Fertility protocols for diminished ovarian reserve have generally used more, commonly around 75 mg daily split across the day, on much weaker evidence.

Upper limit: No formal upper limit, which reflects the absence of a framework rather than the absence of risk. Over-the-counter strengths of 25–100 mg push DHEA-S well above the normal range in anyone whose adrenal function is intact

Timing

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

Time to effect

Weeks: Hormone level changes, which then indirectly affect downstream symptoms.

Medication interactions

Hormone therapies, including oestrogen and testosterone: Additive hormonal effects. (high)
Hormone-sensitive conditions (breast, ovarian, prostate cancer): May stimulate hormone-sensitive tissue. Avoid. (high)
Anti-seizure medication and some antidepressants: Altered hormone metabolism and drug levels. (moderate)

Common myth

“DHEA is a mild, low-risk anti-ageing supplement.” In reality: It’s a genuine steroid hormone precursor that can affect oestrogen and testosterone levels — a meaningfully different risk category than a typical vitamin, and worth discussing with a doctor first, especially with any hormone-sensitive condition.