Aygestin vs Lasix: side-by-side comparison
Aygestin (Women's Sexual Health) and Lasix (Diuretics) belong to different therapeutic classes and are rarely interchangeable. This page compares the medications' purposes, mechanisms and the situations where each is used.
| Property | Aygestin | Lasix |
|---|---|---|
| Active ingredient | Norethindrone | Furosemide |
| Manufacturer | Various generics | Sanofi |
| Class | Women's Sexual Health | Diuretics |
| Strengths | 5mg | 20mg, 40mg, 100mg |
| Forms | tablet | tablet |
What's the same
Aygestin and Lasix are used in very different patients, and the points in common are limited. The main shared element is that both meet regulatory standards for efficacy and safety and benefit from pharmacist oversight.
Key differences
Aygestin belongs to Women's Sexual Health while Lasix belongs to Diuretics. Indications, mechanisms and target populations differ. The comparison is most useful when a clinician has mentioned both medications and the patient wants to understand where each fits.
Mechanism and action
Aygestin: Norethindrone binds to progesterone receptors and exerts progestational effects: thickening cervical mucus, suppressing the LH surge, thinning the endometrium and reducing endometrial implant activity in endometriosis. Lasix: Lasix acts in the kidney's loop of Henle, where it blocks the NKCC2 co-transporter that normally reabsorbs sodium, chloride and potassium from the urine back into the bloodstream.
When Aygestin is preferred
Aygestin is approved for endometriosis-associated pain, abnormal uterine bleeding due to hormonal imbalance, and secondary amenorrhoea.
When Lasix is preferred
Lasix is approved for fluid overload due to heart failure, chronic kidney disease and liver cirrhosis (with or without ascites), as well as acute pulmonary oedema.
Frequently asked questions
Is Aygestin or Lasix better? ▾
Aygestin and Lasix are not interchangeable — they treat different conditions. Asking which is "better" is meaningful only when a clinician has weighed both for the same specific clinical scenario.
Can I switch from Aygestin to Lasix? ▾
Switching between Aygestin and Lasix is rarely an appropriate decision since they belong to different classes and treat different conditions. The real question is usually whether the diagnosis calls for one medication or the other — which the prescriber resolves.
Do Aygestin and Lasix have the same side effects? ▾
No — they belong to different classes and have distinct side-effect profiles. Each medication has its own prescribing information.
More Aygestin comparisons
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.