I bought a drug for my nephew from a pharmacy yesterday evening, I didn't check the expiring date. This morning, when drug is to b used, my sister discovered it was watery and sour/bitter, so checked the expiring date, it says 03/2017. I went back there to return it, the pharmacist said it has not expired and it was supposed to expire next month, she said, I'm entitled to refund. Though the drug is cheap, but why would they sell expired drugs and no apologies, and what will be the result if the boy had the drug.

The drug is muti-vitamin syrup.

To pharmacists in the house. Do you think she's right, and what can be done?