March Madness - cough cough cough cough cough

In 2001, a study in the British Medical Journal indicated that some cough medicines are no more effective than placebos for acute coughs in adults, including coughs related to upper respiratory tract infections. In 2006, the American College of Chest Physicians published a guideline that had the dual message that many over-the-counter cough medicines are not effective and that those that are effective in treating the symptom do not treat the underlying cause; the underlying disorder emphasized by the guideline was pertussis(whooping cough) in the elderly.

Recent studies have found that theobromine, a compound found in cacao, is more effective as a cough suppressant than prescription codeine. This compound suppresses the "itch" signal from the nerve in the back of the throat that causes the cough reflex. It is possible to get an effective dose (1 g, though 0.5 g may be sufficient) from 50g of dark chocolate, which contains 2 to 10 times more cacao than milk chocolate. I'm confused. I don't measure my chocolate.

So I take dark chocolate to treat this cough? I don't need expensive, mediciney tasting cough syrup? So, I have a cough for my birthday. How can I go to sleep after drinking hot-chocolate (dark, of course)? This is "March Madness."