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hormone

Conjugated Estrogens

Also known as: Premarin, CEE, conjugated equine oestrogens

A mixture of oestrogen compounds derived from the urine of pregnant mares. One of the most widely studied oestrogen preparations, though largely replaced in the UK by body-identical options. Still prescribed in some cases, including for women post-hysterectomy.

This page contains self-reported experiences from the Narrated community — not clinical data. Outcomes are subjective. Always consult your doctor or specialist before starting, stopping, or changing any approach.

Regulatory status does not mean an approach is safe or unsafe. Laws vary by country — check your local regulations.

Community Experiences

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Research Context

Research context compiled from published sources

How does Conjugated Estrogens work?

Contains a mixture of oestrogen sulphates (predominantly oestrone sulphate plus equine-specific oestrogens) which are converted to active oestrogens after oral absorption. Acts on oestrogen receptors throughout the body to relieve menopausal symptoms and protect bone density.

Research Depth

Well Studied

Extensive human research over many years, including randomized controlled trials.

Long-Term Evidence

Well Characterized

Decades of long-term safety data available from human use.

Known Interactions
AnticoagulantsLiver enzyme inducers
Reported Contraindicated Populations
History of oestrogen-sensitive breast cancerUndiagnosed vaginal bleedingActive liver diseaseHistory of VTE
Published Dose Ranges
0.31.25 mg/dayoral · once daily
BNF

Dose ranges from published research. Individual dosing should be determined with your healthcare provider based on your specific circumstances.

Factual research context from published sources — not a safety assessment or recommendation. Research classifications may change as new data emerges.

Related Approaches

Other approaches tracked on Narrated.

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