LD Collins

L.D. Collins and Co. Ltd
Company Reg No: 987004


Progesterone is important for the regulation of ovulation, menstruation, pregnancy and embryogenesis of humans.

Cyclogest pessaries contain 200mg or 400mg of progesterone (Pregn-4-ene-3,20-dione), a naturally occurring progestogen which also possesses anti-oestrogenic activity.

Cyclogest works by adjusting the hormonal balance within the body and is indicated for use in ART (Assisted Reproduction Technology), pre-menstrual syndrome & post-natal depression.

For an up-to-date copy of the Cyclogest Summaries of Product Characteristics (SPCs), please visit these pages on the eMC website:

200mg Pessary
400mg Pessary

The Cyclogest Trade Mark is owned by LD Collins Ltd and the product is currently marketed and distributed around the globe by LD Collins in conjunction with its partners.


Laurence Collins was born Aug 21 1931 in Stamford Hill, London. His family moved to Cockfosters, Barnet in 1937. Laurence studied at Bedford School until 1949, gaining School Certificate aged 16 and Higher School Certificate in Physics, Chemistry, Biology....

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