First of all, Lisinopril is NOT for heartburn. So those saying that it is are completely wrong. Lisinopril is used for hypertension (high blood pressure) and can be used for heart failure.
Second, I looked on all the pharmacy databases I have access to and I couldn't find any drug with these markings on it. The closest I found was Enalapril (also used for blood pressure) which has markings w 925.
It is a heartburn pill. I am pretty sure it is Lisinopril .
Not sure what brand but it's a heartburn pill.