Prilosec vs Synthroid: side-by-side comparison
Prilosec (Médicaments gastro-intestinaux) and Synthroid (Hormones et contraception) belong to different therapeutic classes and are rarely interchangeable. This page compares the medications' purposes, mechanisms and the situations where each is used.
| Property | Prilosec | Synthroid |
|---|---|---|
| Active ingredient | Omeprazole | Levothyroxine |
| Manufacturer | AstraZeneca / P&G | AbbVie |
| Class | Médicaments gastro-intestinaux | Hormones et contraception |
| Strengths | 10mg, 20mg, 40mg | 25mcg, 50mcg, 75mcg, 100mcg, 150mcg |
| Forms | delayed-release capsule, delayed-release tablet, oral suspension | tablet |
What's the same
Prilosec and Synthroid 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
Prilosec belongs to Médicaments gastro-intestinaux while Synthroid belongs to Hormones et contraception. 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
Prilosec: L'oméprazole est un promédicament de type benzimidazole substitué, activé dans l'environnement acide de la cellule pariétale gastrique, où il inhibe de façon irréversible l'enzyme H+/K+-ATPase — la pompe à protons respon… Synthroid: La lévothyroxine remplace la thyroxine endogène déficitaire, convertie dans les tissus en hormone active, la triiodothyronine (T3), par les enzymes désiodases.
When Prilosec is preferred
Prilosec est autorisé chez l'adulte et l'enfant dans le traitement du reflux gastro-œsophagien, y compris la cicatrisation de l'œsophagite érosive, de l'ulcère gastroduodénal, dans la prévention des ulcères induits par les AINS, dans le syndrome de Zollinger-Ellison et dans le ca…
When Synthroid is preferred
Synthroid est autorisé dans l'hypothyroïdie de toute cause (thyroïdite de Hashimoto, post-thyroïdectomie, post-iode radioactif, congénitale), dans le goitre et dans la freination de la TSH après cancer thyroïdien différencié.
Questions fréquentes
Is Prilosec or Synthroid better? ▾
Prilosec and Synthroid 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 Prilosec to Synthroid? ▾
Switching between Prilosec and Synthroid 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 Prilosec and Synthroid 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 Prilosec 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.