Active substance
Conjugated Estrogens
2 products from 1 companies contain this in United States.
2 prescription onlyInjection, Powder, Lyophilized, for SolutionCream
Prescription only
Premarin25 mg/5mLPrescription only Wyeth Pharmaceuticals LLC, a subsidiary of Pfizer Inc. · Conjugated EstrogensPremarin Vaginal.625 mg/gPrescription only Wyeth Pharmaceuticals LLC, a subsidiary of Pfizer Inc. · Conjugated Estrogens
Same substance is not the same product. Strength, form, release mechanism and other ingredients all differ. Whether one can replace another is a decision for a pharmacist.