Active substance
Pyrithions Zinc
2 products from 2 companies contain this in United States.
2 without prescriptionShampoo
Available without a prescription
Dry Scalp10 mg/mLWithout prescription Meijer, Inc. · Pyrithions ZincDry Scalp10 mg/mLWithout prescription Walmart Inc. · Pyrithions Zinc
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.