Fill in the blank with an appropriate word. 'The doctor said that a small daily …… of the new drug would soon cure him.'

'Dose' is the correct medical term for a measured amount of medication to be taken at one time. When referring to medicine, we talk about a 'daily dose' - the specific quantity prescribed. 'Tablet' and 'pill' refer to the physical form of the medicine, not the amount. 'Quantity' is too general and doesn't carry the medical precision of 'dose.' In medical contexts, 'dose' specifically means the measured amount of a medication.