The invention provides a method for detecting the content of a compound paracetamol and
amantadine hydrochloride capsule, and relates to the field of pharmaceutical analysis. The method for detecting the content of the compound paracetamol and
amantadine hydrochloride capsule comprises the following steps: (1) taking the content of the compound paracetamol and
amantadine hydrochloride capsule,
grinding, precisely weighing, putting into a container, adding water for dissolving, diluting to a constant volume, uniformly shaking, filtering, precisely measuring a continuous filtrate, titrating by using a
silver nitrate titration solution to the end point by using a
potentiometric titration method, and taking out the filtrate to obtain the content of the compound paracetamol and
amantadine hydrochloride capsule. Calculating the content of
amantadine hydrochloride in the compound paracetamol and
amantadine hydrochloride capsule; and (2) taking the content of the compound paracetamol and amantadine hydrochloride capsule,
grinding, precisely weighing, placing in a container, adding
hydrochloric acid and first water, heating and refluxing, cooling to
room temperature, adding second water, inserting the tip of a
burette under the liquid level, quickly titrating to the end point by using a
sodium nitrite titration solution by using a
potentiometric titration method, and calculating the content of paracetamol in the compound paracetamol and amantadine hydrochloride capsule. The detection method provided by the invention has the advantages of good reproducibility, rapidness and no
pollution in the detection process.