EFFECTS OF LONG-TERM MICRODOSAGE OF NORGESTREL ON GLUCOSE TOLERANCE AND SERUM TRANSAMINASE LEVELS

in Reproduction

Oral contraceptives containing oestrogen and progestagen in high dosage may produce many undesirable side effects. The risk of thrombo-phlebotic episodes (Vessey & Doll, 1969) has caused much concern, but the possible long-term effects of the numerous metabolic changes have also to be considered. Amongst the latter, impaired glucose tolerance (Wynn & Doar, 1969) and increased levels of serum glutamic—pyruvate transaminase (SGPT) have been reported (Larsson-Cohn, 1965).

The use of norgestrel alone, given continuously in low dosage of 50 μg, is slightly less effective as a contraceptive than conventional combinations of oestrogen and progestagen (Foss, Svendsen, Fotherby & Richards, 1968) and 22% of cycles are shorter than 23 days in the women on this regimen, but the incidence of side effects is much lower (Foss, 1968). With the elimination of the

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    Society for Reproduction and Fertility

 

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