Data support extended use of levonorgestrel intrauterine systems

BMJ 1998; 316 doi: https://doi.org/10.1136/bmj.316.7145.1671 (Published 30 May 1998) Cite this as: BMJ 1998;316:1671
  1. Diana Mansour, Medical advisor,
  2. John Guillebaud, Medical director
  1. Margaret Pyke Memorial Trust, London W1P 1LB
  2. Margaret Pyke Family Planning Centre, London W1P 1LB

    EDITOR—The levonorgestrel intrauterine system (Mirena), a useful addition to contraceptive choice, is now approaching its third anniversary.

    In the United Kingdom the product licence for the levonorgestrel intrauterine system permits its use for three years. In all other countries where the system is marketed, however, its use is approved for five years. There is good evidence to support this longer duration,1 and indeed the system seems to remain effective for as long as …

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