Lasix vs Ativan: side-by-side comparison
Lasix (Diurétiques) and Ativan (Anxiolytiques) belong to different therapeutic classes and are rarely interchangeable. This page compares the medications' purposes, mechanisms and the situations where each is used.
| Property | Lasix | Ativan |
|---|---|---|
| Active ingredient | Furosemide | Lorazepam |
| Manufacturer | Sanofi | Pfizer |
| Class | Diurétiques | Anxiolytiques |
| Strengths | 20mg, 40mg, 100mg | 0.5mg, 1mg, 2mg |
| Forms | tablet | tablet, oral concentrate, injection |
What's the same
Lasix and Ativan 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
Lasix belongs to Diurétiques while Ativan belongs to Anxiolytiques. 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
Lasix: Lasix agit au niveau de l'anse de Henle, où il bloque le cotransporteur NKCC2 qui réabsorbe normalement le sodium, le chlore et le potassium depuis l'urine vers la circulation sanguine. Ativan: Le lorazépam se lie au site benzodiazépine du récepteur GABA-A et renforce de façon allostérique la conductance chlorure inhibitrice.
When Lasix is preferred
Lasix est autorisé dans la surcharge hydrosodée liée à l'insuffisance cardiaque, à la maladie rénale chronique et à la cirrhose (avec ou sans ascite), ainsi que dans l'œdème aigu du poumon.
When Ativan is preferred
Ativan est autorisé chez l'adulte dans la prise en charge de courte durée des troubles anxieux et de l'insomnie liée à l'anxiété.
Questions fréquentes
Is Lasix or Ativan better? ▾
Lasix and Ativan 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 Lasix to Ativan? ▾
Switching between Lasix and Ativan 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 Lasix and Ativan 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 Lasix comparisons
Les informations publiées sur ce site sont fournies à titre documentaire et pédagogique. Elles ne remplacent pas l'avis d'un professionnel de santé qualifié.