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Drug Dosage

Please note - Dosage information listed on the website should be used as a guideline only. Always consult your doctor or healthcare specialist before changing the dosage of any medicines.

See also: Complete Drug Dosage A to Z index

Pediatric Dosage Guides

Use these dosage charts for infants and children under 12 years old.

Dosage Charts (Infants & Children)

More about Dosage and Administration

The dose is the amount of drug taken at any one time. This can be expressed as the weight of drug (e.g. 250 mg), volume of drug solution (e.g. 10 mL, 2 drops), the number of dosage forms (e.g. 1 capsule, 1 suppository) or some other quantity (e.g. 2 puffs).

The dosage regimen is the frequency at which the drug doses are given. Examples include 2.5 mL twice a day, one tablet three times a day, one injection every four weeks.

The total daily dose is calculated from the dose and the number of times per day the dose is taken.

The dosage form is the physical form of a dose of drug. Common dosage forms include tablets, capsules, creams, ointments, aerosols and patches. Each dosage form may also have a number of specialized forms such as extended-release, buccal, dispersible and chewable tablets. The strength is the amount of drug in the dosage form or a unit of the dosage form (e.g. 500 mg capsule, 250 mg/5 mL suspension).

The route of administration is the way the dosage form is given. Common routes of administration include oral, rectal, inhalation, nasal and topical.

The optimal dosage is the dosage that gives the desired effect with minimum side effects.

There are many factors taken into consideration when deciding a dose of drug - including age of the patient, weight, sex, ethnicity, liver and kidney function and whether the patient smokes. Other medicines may also affect the drug dose.

Dosage instructions are written on the doctor's prescription or hospital chart, and on the pharmacy label of a prescribed medicine. Dosage instructions are also found on the packaging and inserts of over-the-counter medicines.

Drug Dosage A-Z Index


A-Hydrocort injection, powder, lyophilized, for solution → Aklief Cream cream Akne-mycin Ointment ointment → Amphotericin B Liposomal Ampicillin → Atrovent HFA aerosol, metered Atrovent Nasal Spray nasal spray, metered → Azurette tablets


B-Donna Tablets tablet → Bivalirudin Bivigam ) injection, solution → Byvalson tablet, film coated


C-Nate DHA capsule, gelatin c → Cefpodoxime Cefprozil → CitraNatal Harmony capsule, gelatin coated CitraNatal Medley capsule → Corzall liquid Corzall Plus liquid → Cytra-3 Oral Syrup syrup


D.H.E. 45 injection, solution → Dextromethorphan / Diphenhydramine / Phenylephrine Dextromethorphan / Doxylamine → Dry Socket Paste dental paste DryMax Syrup syrup → Dyzbac tablet


E-Z Disk tablet → Equetro capsule, extended release Eravacycline → Ezogabine


FaBB Tablets tablet → Focalin XR capsule, extended release Folcal DHA capsule, gelatin coated → Fycompa tablets, oral suspension


Gabapentin → Gynazole-1 vaginal cream


H.P. Acthar Gel injection → Hyzaar tablet, film coated


I3odine Max kit, capsules and solution → IsoDitrate tablet, extended release Isoflurane → Izba ophthalmic solution


J-COF DHC oral liquid → Jynarque kit


K-Dur extended-release tablets → Kytril tablet, film coated; oral solution


L-Methyl-MC NAC Tablets tablet, coated → Lisdexamfetamine Lisinopril → Lyza Tablets tablet


M-Cresyl Acetate Otic → Metreleptin MetroCream topical cream → Mytesi tablet, coated Myzilra tablets → Myzilra tablets


Nabi-HB injection → Nizatidine Nizoral tablet → Nyvepria njection, solution