Here is a short list of items you should have on you at all times - These can be kept in your car, purse, wallet, desk, etc. Redundancy is a good thing when it comes to being prepared.
- Band-Aids - keep a good variety of sizes and don't skimp and buy the plastic ones, you'll end up changing them more often because they don't stay on well. I keep everything from 'dots' to 4x4 'knee pad' size. I also keep a couple butterfly closures with my bandaids
- Liquid bandage - works well for most small injuries, fairly cheap at only $1 or 2 for a couple tubes about the size of a superglue bottle. Eliminates the need for most smaller band aids.
- Individual packets of triple anti-biotic, sting relief, and cortizone cream. I found a great website for these - firstaidmonster.com. Their prices are great, products are effective and service is quick.
- A pair of nail clippers with a small file
- Mini bottle of hand sanitizer
This is a comprehensive list of first aid supplies to keep on hand. I've decided to post Medicines separately though some things like triple antibiotic may be included in both areas. Also - I've decided not to delve into natural/herbal/homeopathics in this post. Hopefully I can cover those at another time.
Red Cross certification in CPR & First Aid
EMT training if feasible
Recommended resources -
PDR: Physicians Desk Reference
The Merck Manual of Diagnosis and Therapy by Mark H Beers
US Army Special Forces Medical Handbook - Department of the Army
Recommended reading -
Survivalist Medicine Chest or Do it yourself Medicine by Ragnar Benson
Wilderness Medicine, Beyond First Aid by William Forgey
Where There is No Doctor by David Werner
Where There is No Dentist by Murray Dickson