Allegra is a different drug, Fexofenadine, a third generation antihistamine. The two drugs have some chemical similarities, but are not the same.

Ello, Dr Fishgoth here again. In my 10 years medical experience, I've never seen drugs injected directly into the heart. I've assisted during pericardial aspiration, where fluid is drained from inside lining of 'skin' (pericardium) that surrounds the heart. On Mr average, the needle is placed into the 5th intercostal space, mid clavicular line, pushing through muscle rather than bone. Or in otherwords, just next to the left nipple.
In a cardiorespiratory arrest, if we doctors cannot get access to a peripheral vein, we would use a central vein (neck or top of the leg), drill a hole into the bone just below the knee and use the bone marrow (intraosseous injection), or inject a mist into the tube we insert into the windpipe (intratracheal route) before we would inject into the heart.
Seriously, if you want a medical rundown on lists for listverse, I'd be happy to give a (free) opinion on them - consider me a medically qualified fanboy!

No, it isn't. Once someone has been admitted to hospital, there is no benefit whatsoever to keeping them awake. There is a benefit in doing regular neurological observations. A patient needs to be awake for these. Sometimes these observations will be every 15 minutes. Sometimes these will be every four hours. The periodicity will depend on the exact nature of the case. In between these neuro obs, the patient is free to fall asleep if they so wish. For the UK guidelines on the management of head injuries, click here : http://www.nice.org.uk/CG056
DOI: Qualified doctor, 6 months of being a junior neurosurgeon in my past.

As I have occasionally have had to do following fishing one out in the A+E department (emergency room).