Don't worry about his condition it doesn't seem too terrible. I know a close friend who has a out of place colar bone from biking. Road rash sucks, which seems is what your brother got as well. Just make sure you give him a lecture or stern talking to; you can't stop him but you can motivate his actions, I remember being irresponsible when drinking at the age of 14, and I would constantly black out and whined up in someone elses house. Sometimes I had bruises and a needle that I was told was stuck in my hand after falling over a table that wasnt supported. I learned from my mistakes and drink the most responsible in every party I find myself at.

Im so tolerant and disciplined in drinking that I could drink a tall shot glass of bacardi 151 and walk a busy street while oddly being drunk but moderately focused enough to acknowledge everything, but I must say this sort of control kills the fun in drinking at times, theres a time to let loose and times to stay in control. Another chemical like DXM is very fun to tolerate in public areas, for instance: blockbuster. I also love drinking and going shopping at the grocery store, its no biggie to me or anyone around me. If someone was to accompany me along the way they would always be surprised when I inform them I have had enough to drink to get anyone buzzed. It all has to do with how you cope and feel while on the substance.