Active substance
Echinacea Purpurea
3 products from 2 companies contain this in United States.
3 without prescriptionPelletLiquid
Available without a prescription
Echinacea Purpurea30CWithout prescription Boiron · Echinacea PurpureaEchinacea Purpurea200CWithout prescription Boiron · Echinacea PurpureaEchinasyr18.125 g/125mLWithout prescription Seroyal USA · Echinacea Purpurea
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.