I sympathies with all the sufferers experiencing the severe side ...

I sympathies with all the sufferers experiencing the severe side effects from Lisinopril. I have been using this Lisinopril for the last two days and it is getting my nerve system punchy every now and then. It is as if someone is pinching you on your arms. Why is this drug being allowed to stay on the market and be prescribed by doctors? Where is the FDA regulatory role in ensuring the safety of this drug? Can any Doctor worth his/her salt give a direct answer to this question?