The compounder versus the marketplace — two different layers.
Empower Pharmacy is the pharmacy: it fills patient-specific 503A prescriptions and provides the LifeFile portal for ordering. Ironsail's ImpetusRX is a technology platform: it connects prescribers to a network of 20+ compounders (including 503A and 503B) and lets you compare pricing across pharmacies before placing an order. You are not comparing two pharmacies when you compare Empower to ImpetusRX — you are comparing a single compounder portal to a multi-pharmacy marketplace.
For clinics whose formulary fits Empower entirely, the LifeFile portal is straightforward. For clinics that want to shop pricing across multiple compounders, or need both 503A patient-specific and 503B office-use in one session, a marketplace model like ImpetusRX adds that breadth. The tradeoff is adopting a new EMR layer versus the simpler single-portal relationship with Empower.