GC: n

S: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1464229/ (last access: 29 June 2017); http://holford.fmhs.auckland.ac.nz/docs/rational-dose-prediction.pdf (last access: 29 June 2017).

N: 1. – dose (n.): Early 15c., “the giving of medicine (in a specified amount or at a stated time),” from Middle French dose (15c.) or directly from Late Latin dosis, from Greek dosis “a portion prescribed,” literally “a giving,” used by Galen and other Greek physicians to mean an amount of medicine, from stem of didonai “to give” (from PIE root *do- “to give”). Slang meaning “venereal disease” is from 1914.
– dose (v.): 1650s, from dose (n.). Related: Dosed; dosing.
2. The quantity of a drug or other remedy to be taken or applied all at one time or in fractional amounts within a given period.
In NUCLEAR MEDICINE amount of energy absorbed per unit mass of irradiated material (absorbed dose).
3. Do not confuse this word with dosage.
4. What is the difference between Dose and Dosage?
• Dose is the quantity or the amount of medicine to be consumed every time. It is expressed in ml, cc, or mg. However, while prescribing syrups, doctors tend to write dosage as tsp. or tea spoonful such as 1 tsp. or 2 tsp.
• Dosage is the frequency of the medication. This means that the dosage not only tells the quantity of medicine to be taken, but it also tells the frequency or the number of times a medicine has to be taken by the patient. This dosage is written as OD, BD, or TDS by the doctors. They can also specify the times of the day when a medication has to be taken.
• Dosage is as important as dose for a patient and dosage is mentioned clearly by the doctor on his prescription.

S: 1. OED – http://www.etymonline.com/index.php?allowed_in_frame=0&search=dose (last access: 29 June 2017). 2 & 3. http://medical-dictionary.thefreedictionary.com/dose (last access: 29 June 2017). 4. http://www.differencebetween.com/difference-between-dose-and-vs-dosage/ (last access: 29 June 2017).

SYN:
S:

CR: dosage, pharmacology, posology.