They already do. Amniodarone is an antiarrhythmic that absolutely kills them in a matter of months. The lungs turn into fibrous tissue, and the drug has a 6-month half-life, so once it's administered, it stays in the body basically until they die. The blood pressure drugs cause cancer and they now consider BP as low as 130/80 to be hypertension. BP drugs also cause diabetes. Diabetes drugs cause cancer. Cholesterol drugs cause calcification of the arteries. Coronary stents are a death sentence. They push the pneumonia, shingles and flu vaccines on them. They have so many ways of killing old people that I can't even count them all.