I Am Taking 20mg Simvastatin Daily For Many Years To

I am taking 20mg Simvastatin daily for many years to lower my cholesterol. Can I stop taking this drug and change to Policosanol plus other health supplements such as omega-3, oat bran, etc? Last year, I stop taking simvastatin for six months and only took health supplements omega-3, beta glucan, oats, etc. When I had my blood test, my total cholesterol was very high… 9.8 mmol/L. So I take Simvastatin again. Recently I learned that policosanol can lower cholesterol better than drugs and without side effects. Can policosanol replace simvastatin?