Lisinopril Red Blood Cell, Refractory Anemia, Blood Cell Count, Red Blood Cell Count, Mild Anemia

this is not necessarily a proven side effect but during the time period that I've taken Zestril, I've been diagnosed with refractory anemia. I started taken Zestril in the year 2000. I've had mild anemia for about that same time period. About a year ago, I started having shoulder pain, numb thighs, severe mid-lower back pain, distended stomach. Weight loss. Potassium level increased.
Red blood cell count dropped as low as 31. Diagnosed as refractory anemia. Unknown cause.
All tests were done to check for cancers. All negative.
Erthropoetin shots were used to push the red blood cell count back up again. After five shots, the count dropped. More shots. I stopped taking the lisinipril and my red blood cell count has stabilized. Blood pressure went up to 150. I'm back on lisinipril. Waiting to see what happens next.
Cough yes. Sleepy in the morning and late afternoon naps. Yes.
Anyone else experience anemia since beginning to take lisinopril?