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99.96% BP Standard Diphenhydramine HCl Pharmaceutical Raw Materials
Diphenhydramine is an antihistamine used to relieve symptoms of allergy, hay fever, and the common cold. These symptoms include rash, itching, watery eyes, itchy eyes/nose/throat, cough, runny nose, and sneezing. It is also used to prevent and treat nausea, vomiting and dizziness caused by motion sickness. Diphenhydramine can also be used to help you relax and fall asleep.
This medication works by blocking a certain natural substance (histamine) that your body makes during an allergic reaction. Its drying effects on such symptoms as watery eyes and runny nose are caused by blocking another natural substance made by your body (acetylcholine).
|Characteristics||White or almost white,crystalline powder||A white crystalline powder|
|Identification||A. IR: Comport with the reference;
B. The retention time comport to the reference
C. The Chloride Reaction
|Acidity or alkalinity||≤0.5ml of 0.01M NaOH||0.47ml|
|Loss on drying||≤0.5%||0.15%|
|Residue on ignition||≤0.1%||0.08%|
|Related substance||Impurity A≤0.5%
Any other unspecified impurity≤0.1%
|Conclusion||The above product conforms to First Supplement to USP36.|