Women Pack-20

Women Pack-20: Comprehensive Patient Information (Australia)

Basic Product Information

Mechanism of Action

Patient-friendly explanation: Women Pack-20 is a combined oral contraceptive pill containing two hormones, drospirenone and ethinylestradiol. These hormones work together to prevent pregnancy in three main ways:

• Stopping the release of an egg from the ovaries (ovulation)
• Thickening the cervical mucus, making it harder for sperm to reach the egg
• Altering the lining of the womb, making it less receptive to a fertilised egg

For specialists: Drospirenone is a progestogen with antiandrogenic and mild antimineralocorticoid activity, while ethinylestradiol is a synthetic oestrogen. Combined, they exert contraceptive efficacy through suppressing the hypothalamic-pituitary-ovarian axis, inhibiting follicle-stimulating hormone (FSH) and luteinising hormone (LH) activity.

Pharmacokinetics

• Absorption: Both hormones are rapidly absorbed after oral administration. Peak levels are reached in approximately 1-2 hours.
• Metabolism: Drospirenone is metabolised principally in the liver via CYP3A4; ethinylestradiol is metabolised in both the gut and liver.
• Elimination: Metabolites are excreted in both urine and faeces.
• Duration of Action: Cycle-dependent – steady state reached after a few cycles if taken daily.

Use in Everyday Life & Best Practices

Women Pack-20 is commonly recommended for contraception but may also be prescribed for acne, menstrual regulation, and relief of premenstrual dysphoric disorder (PMDD). Tablets are taken once daily, ideally at the same time each day, following the 24/4 regimen: 24 days of active pills followed by 4 days of placebo, then repeat the cycle.

• Start on the first day of your period (ideal) or on day 2-5, using extra contraception as advised.
• Missed pill? If within 24 hours, take it as soon as possible and continue as normal. If missed by more than 24 hours, follow the instructions in the patient information leaflet.
• Consult your GP or pharmacist for a personalised schedule if you are switching brands or starting late.

Dosing in the Morning vs Evening

• Morning: Taking Women Pack-20 in the morning reduces the risk of forgetting if you have regular mornings. It may also help those who experience nausea at night.
• Evening: Preferred by patients who have more regular evening routines; may suit shift workers or those with morning nausea.
• Tip: Choose a time you can stick to every day. Set a phone alarm if helpful. Taking at the same time helps maintain steady hormone levels and effective contraception.

Taking with Food or on an Empty Stomach

• Women Pack-20 can be taken with or without food.
• Taking with food may reduce mild nausea (a common effect in the first few weeks).
• English diet is compatible with this medicine: no special foods to avoid, but always follow a balanced diet. Avoid excessive grapefruit, which may affect some hormone levels.

Interaction Warnings

Indications

Dosing According to Clinical Indication

Safety Profile & Side Effects

Women Pack-20 is generally well tolerated. Not everyone experiences side effects, and most settle within the first few months. Consult your GP or pharmacist if symptoms persist or are severe.

If you experience warning signs such as sudden chest pain, severe headaches, leg swelling or pain, or vision changes, seek urgent medical advice.

• Absolute contraindications: Personal history of thromboembolism, known hormone-sensitive cancers, severe liver disease
• Cautions: High blood pressure, obesity, migraine with aura, smoking (over 35 years old), diabetes with vascular complications

Guidelines for Proper Use (Australia)

• Obtain a valid prescription from your GP or family planning clinic; annual review is recommended.
• Inform your pharmacist of any new or discontinued medications.
• Women Pack-20 does not protect against sexually transmitted infections (STIs) – use condoms for STI prevention.
• If vomiting or severe diarrhoea occurs within four hours of taking a tablet, take another as soon as practical and follow missed pill rules.
• Store in a cool, dry place below 25°C; keep out of reach of children.

Alternative Treatment Options

• Other combined oral contraceptives (e.g., Microgynon 20/30, Levlen, Brevinor) – different hormone combinations/profiles
• Progestogen-only pill (Mini-pill; e.g., Noriday, Microlut) – suitable for some women, especially if oestrogen is not tolerated
• Long-acting reversible contraceptives:
  • Implanon NXT (implant; PBS-reimbursed in Australia)
  • Mirena/Kyleena (intrauterine devices)
  • Depo-Provera injection
• Barrier methods (condoms, diaphragms)
• Permanent sterilisation (tubal ligation)

Pros & Cons Overview:

• Women Pack-20 provides cycle control and improvement in acne but must be taken daily.
• LARC methods are more effective for long-term contraception and don’t require daily action.
• Progestogen-only pills are safe in many medical conditions but don’t help with cycle control/acne.

Legal, Registration, and Reimbursement Status in Australia

• Regulated by the Therapeutic Goods Administration (TGA); registered as a Schedule 4 (S4) prescription medicine.
• Women Pack-20 and equivalents are available on the PBS (Pharmaceutical Benefits Scheme) for some approved indications (mainly contraception, acne, and PMDD).
• Only available via prescription from a doctor or nurse practitioner; not available over the counter in Australia.
• Subsidy via Medicare available for some patients – check with your prescriber and pharmacist.

Latest Research / Clinical Guidance (2022–2025)

• The Royal Australian and New Zealand College of Obstetricians and Gynaecologists (RANZCOG) reaffirms combined oral contraceptives’ safety and efficacy in eligible women (RANZCOG, 2024).
• Latest PBS guidance (2025): Women Pack-20 continues to be widely prescribed as a first-line contraceptive for suitable women under 50 years, with non-contraceptive health benefits (e.g., cycle regulation, PMDD).
• Studies from 2022-2024 indicate no significant increase in cardiovascular events in healthy, non-smoking women under 35, though all users should be screened for risk factors (BMJ, 2023).
• International evidence supports a positive impact on acne and menstrual regulation, with significant improvement after 3-6 months (Lancet, 2024; Cochrane Review, 2023).
• Long-term safety remains excellent in women with no significant risk factors for VTE or hormone-sensitive cancers.

Availability and Delivery

Prices are indicative and may be lower if covered by PBS or with a concession card.

Frequently Asked Questions (FAQs)

• 1. What should I do if I miss a pill?
  If you miss one pill, take it as soon as you remember and continue as usual. For two or more missed, follow the instructions in your pack or consult your pharmacist, and use additional contraception for 7 days.
• 2. Does Women Pack-20 cause weight gain?
  Significant weight gain is uncommon. Most users experience no substantial change. Eating a balanced English diet and staying active is encouraged.
• 3. Is it safe to take Women Pack-20 for many years?
  For most healthy women with no risk factors, long-term use is safe. Annual check-ups with your GP are recommended.
• 4. Can I start Women Pack-20 at any time in my cycle?
  For best contraceptive coverage, start on day 1 of your period. If starting mid-cycle, use extra contraception for 7 days unless advised otherwise by your doctor.
• 5. Does Women Pack-20 affect fertility after stopping?
  Fertility rapidly returns after discontinuing the pill, usually within a few weeks. There is no evidence of long-term impact.

For further advice, always consult your GP, nurse, or Australia-registered pharmacist. Product information last updated: June 2024.