Polyoestradiol phosphate

Other oestrogens which have been used to treat prostatic cancer have failed to receive universal acceptance. Polyoestradiol phosphate (Estradurin), a long-acting oestrogenic preparation given intramuscularly, is well used in Scandinavia but only weakly suppresses pituitary activity [42] and neither Premarin, a mixture of conjugated equine oestrogens (2.5 mg, t.d.s.), nor ethynyloestradiol (0.15-1.0 mg/day), has been universally accepted. 

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