Dosage/ˈdəʊsɪdʒ/ Definition 1 of 3Pro Tip 1/3Medical Precision In medical context, 'dosage' requires accuracy to avoid harmful effects. Please double-check the prescribed dosage; accuracy is crucial. Pro Tip 2/3Not Interchangeable 'Dosage' differs from 'dose'; 'dosage' is the regimen, 'dose' the quantity taken at once. The dosage schedule is two doses per day. Pro Tip 3/3Beyond Medications 'Dosage' can apply to vitamins or herbal supplements, not just prescription drugs. Check the vitamin's dosage recommendations on the bottle.