Snake venum symptoms and conditions

I was on Lisinopril for 10 months and got really sick and it took forever to realize it was this drug. In finding out all of this info we found that my grandmother was also on the drug and we quickly got her off of it. My grandmother's doctor told us that this drug was originally made from snake venom and then it was changed to SYNTHETIC snake venom which for some reason has caused more problems for people people. Synthetic or not, i don't want snake venom in my body and it has been a long 4 month recovery from this. My adrenal glands were totally shot along with horrible stomach problems, memory issues, leg pains and many, many more.........