Being combat heavy TFT's greatest weakness was the limited ability to heal. In addition to the Physicker skills we introduced bandages (healing 1 point) with a max of 1 'bandage' per combat/day. These could be applied by anyone.
Healing potions. At a cost of $150 you could purchase a healing potion. To add an element of chance we allowed the healing potions to heal 1D3 of damage. For $300 you could purchase a 2D3 healing potion. The chance aspect always caused a bit of fun as players liked the idea that they might get 3 points healed for only $150 and the cost ensured that there was always a drain on the players cash resources.
Healing herbs. Much like potions above but the availability limited to certain parts of the world, elf woods etc.