Thanks for using the forum. I am happy to address your questions, and my answer will be based on the information you provided here. Please make sure you recognize that this forum is for educational purposes only, and it does not substitute for a formal office visit with your doctor.
Lotrel is a combination of Amlodipine (a calcium channel blocker) and Benazepril (an ACE inhibitor).
Neuropathy from these medications is not a common side effect. There is at least one sporadic case reported in the literature of neuropathy associated with an ACE inhibitor. When reviewing side effects from these medications, paresthesias (abnormal sensation) is reported to be associated with ACE inhibitors in less than 1%. Patients on amlodipine on the other hand, sometimes report abnormal sensation in the legs but mostly associated with “swelling”, and not associated with neuropathy.
ACE inhibitors are widely used, specially in diabetic patients who usually have a higher prevalence of peripheral neuropathy, and worsening of neuropathy on patients caused by these medications is not common.
The fact that the side effect is not common does not mean that what you feel is not related to the medication. I cannot really say if the medication is causing you the problem or not. However if you feel that your neuropathy worsens with the medication, specially after doing the trial of going off the medication and seeing the symptoms improve, I think you should discuss this issue with your doctor, and consider changing the treatment.
I hope you find this information useful. Thank you for the opportunity to answer your questions, good luck.