This is what I carry backpacking:

1 2" Ace bandage
3 large safety pins
1 roll 2" gauze
4 Pepto-Bismol tablets
10 Ibuprofen tablets
6 Benadryl caplets
duct tape rolled around a pencil stub
"Backcountry First Aid" by Buck Tilton
2 pr. nitrile gloves
2 3"x3" pads
moleskin
6 band-aids
1 1% hydrocortisone cream packet (1g)
2 triple antibiotic cream packets (1g)
1 burn gel w/lidocaine packet (3.5g)
2 antiseptic towelettes
6 Micro-Pur water purification tablets

OPSak waterproof bag

total weight 7.2 oz.

I've also had wilderness first aid training which emphasized improvising splints, bandaging, traction, etc. using backpacking gear. Other gear already carried is not included here (i.e. scissors and tweezers on SAK).