An Oral Gel without product insert?!

Im a nurse by profession, i studied pharmacology for almost 2 years in the nursing school, now im a medical representative im still exposed to a lot of drugs from Vaccines, Pills, and other drugs from my company.

I accompanied my mom to have her check up with the doctor. She was diagnosed with HPN and NIDDM last year. So since then she is taking 2 maintenance drug. She is complaining about her mouthsores that doesn't heal, so the doctor prescribed an oral gel, she told us that it comes with a spoon so u can measure it before administration, when we buy the oral gel i wasn't able to check the packaging. When we got home there was no spoon and much worst, there was no product insert regarding the medicine. So i started to think how to apply the gel good thing google is available to help me verify the way how to administer the medicine.

What if google is not available or i don't have any background about pharmacology? Manufacturer should at least label the drug with instruction for the safety of the patients.