After suffering very bad side effects from a statin, even at a reduced 10mg dosage, my cardiologist put me on Repatha. Three days after my first dosage, I was profoundly dizzy, and the dizziness (significant but not as bad as day 3) continued for 8 more days. After my second dose, on day 3 I was lightheaded and that continued for about ten days. Three days after my third dosage, I was again lightheaded but not as badly as after the second injection. I am fatigued and my energy level is lower than it was before starting Repatha. On the statin, I became seriously confused at times, and cognitive decline, along with developing elevated sugar, are what I am most concerned about developing on Repatha. I have a comprehensive blood test in two months.... I know a woman who has been on Repatha for several months and she has had no trouble with side effects....