Progestogen-only pills prevent the mucus changes around the time of ovulation so that sperm cannot get through to the egg thus preventing fertilisation. The lining of the womb (endometrium) is affected so that, even if an egg is fertilised, it is unlikely to be able to implant and develop.
The combined oral contraceptive pill (COP), with occasional exceptions, prevents egg release (ovulation). It is now recognised that the progestogen-only pill also interferes with ovulation although not as effectively as COPs.
Please click on the required question.
- 1 What types of hormone contraceptives are available?
- 2 How effective are hormonal contraceptives?
- 3 How do hormone contraceptives work?
Progestogen-only pills
- 4 What is a progestogen-only pill?
- 5 How do progestogen-only pills provide contraception?
- 6 How does the progestogen-only pill compare to the combined oral contraceptive pill?
- 7 When are POPs recommended in preference to COPs?
- 8 How effective are progestogen-only pills?
- 9 When should POPs be started and how quickly are they are effective?
- 10 When should progestogen-only pills be taken?
- 11 What should be done if a POP is missed?
- 12 What will happen to my periods whilst I am taking progestogen-only pills?
- 13 What should be done if my periods stop when I am taking the progestogen-only pill?
- 14 What should be done if vomiting occurs?
- 15 Should additional precautions be used during a course of antibiotics?
- 16 Can POPs cause ovarian cysts?
- 17 Should the POP be discontinued before I have an operation?
Long-acting hormonal contraception.?
- 18 What are long-acting hormonal contraceptives?
- 19 Depo-Provera What is Depo-Provera?
- 20 What are the advantages of Depo-Provera?
- 21 I have recently had a Depo-Provera injection and now I need to have an operation. Will the operation be delayed?
- 22 What are the disadvantages of Depo-Provera?
- 23 Will my fertility return three months after my last Depo-Provera injection?
- 24 Do long-acting hormonal contraceptives increase the risk of cancer?
- 25 What are contraceptive implants?
Levonorgestrel Intrauterine System - LNG-IUS - Mirena
- 26 Mirena: What is the Levonorgestrel Intrauterine System (LNG-IUS)
- 27 How does the Mirena work?
- 28 How effective is the Mirena as a method of family planning?
- 29 How would a Mirena effect my long-term fertility?
- 30 How long has the Mirena been in use?
- 31 How is the Mirena introduced into the womb?
- 32 How quickly will a Mirena work?
- 33 What problems can occur with the Mirena?
- 34 How frequently should my Mirena be changed?
- 35 What will happen to my periods after a Mirena is introduced?
- 36 What value is Mirena in the management of period problems?
- 37 What value is Mirena for premenstrual syndrome?
- 38 What value is Mirena in Hormone Replacement Therapy?
- 39 Family Planning Support Groups.
- 40 Support Groups.
- Mini Pills
Thank you for choosing to visit us.
This is the personal website of David A Viniker MD FRCOG, Consultant Obstetrician and Gynaecologist at Whipps Cross University Hospital, London - Specialist Interests - Reproductive Medicine including Infertility, PCOS, PMS, Menopause and HRT.
I do hope that you find the answers to your women's health questions in the patient information and medical advice provided.
