Active substance
Guaifenesin 400mg
3 products from 3 companies contain this in United States.
3 without prescriptionTablet
Available without a prescription
Mucus Relief Immediate Release400 mgWithout prescription Good Sense · Guaifenesin 400mgMucus Relief Immediate Release400 mgWithout prescription TopCo Associates, LLC · Guaifenesin 400mgPharbinex400 mgWithout prescription Ulai Health LLC · Guaifenesin 400mg
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.