Hatred - The side effect can be the most substantial. Ever since DIAB was created, the divorce rate has been increasing dramatically. Many scientists say that they have a direct correlation, but that is debatable. It is believed that anyone who takes the medicine experiences the "HULK" Effect. Extreme strength and irritability are often felt and this causes many domestic disputes which eventually lead to neighborhood brawls of epic proportions. (On a side note, DIAB has also caused some good in the world. A mother actually lifted a car while using DIAB to save her son's life. It was not reported, however, how she beat him later for not putting the toilet seat down after his use. DIAB is a harsh mistress.)
Do not use anything other than stainless steel to handle Death in a Bottle. Use of any other type of material may cause spontaneous combustion upon the liquid's contact. Do not allow the ooze-like toxic substance to crawl back into it's nest (aka container) You poured it out for a reason and it damn well better behave properly! DO NOT ALLOW IT TO TOUCH YOUR TONGUE! If for any reason it does come in contact with this muscle, immediately cut it off. If you do not, it will cause a lifetime of agony that no therapist can cure. Trust me, I am now dead on the inside.
"Aww, man. My chest hurts so bad... I need some medicine." Poor soul heads over to the medicine cabinet and opens it up. "Oh, no.... I only have Tussionex (aka Death in a Bottle)... You son of a bitch. F*** this, I am going to chew on glass, would be way more satisfying."