My husband was taking Simvastatin for 2 years and stopped about 3 months ago and has had severe knee swelling which they got under control with steroids and he is now left with severe leg pain that won't go away. He can barely walk. He has been to the Dr. and had all kinds of tests run. They all come out negative even on his muscle enzymes. What can he do to relieve the pain. He has taken Advil and Tylenol. Does CoQ10 help? He's 58. What dosage? Now they found a spot on his lung. He does not smoke.