shelf life of neomycin and polymyxin b sulfates and hydrocortisone otic suspension usp?

Answer 1

The actual expiration date should be printed on the bottle. That expiration date is for an unopened bottle. Once the bottle seal has been opened, the contents are no longer sterile and have been exposed to the environment, which over time leads to deterioration and decreased effectiveness.

Each state's pharmacy board determines whether a discard date is required on the prescription label. Most states mandate 1 year (or less). This is an arbitary date although it is based on studies that have shown that regardless of storage conditions most drugs will still be potent after one year. However, this is for the most stable dosage forms, tablets and capsules. Sterile ear or eye drops are less stable once opened and some manufacturers suggest discarding 3 to 6 months after opening.

Hope this helps.

Rick the pharmacist

Answer 2

It can feel like your ear is blocked for a while but it should feel that way for a long time. The recommended amount is 3 drops. If it's too much then that would explain the blocked feeling. It is also possible that the liquid lodged somewhere instead of going directly into the canal since not all ear canals are straight. You can try gently pulling the earlobe to straighten the ear canal. And it's important to clean your ear prior to putting the medicine. If the blockage really bothers you, you can insert a clean cotton bud inside your ear & it can immediately absorb any fluid inside. Also sleeping with the affected ear pointing downwards can help. If all else fail, see your doctor.

Answer 3

Neomycin And Polymyxin

Answer 4

Typically one year because they begin to break down after that.