Here's my list for my vet kit-I'm mad on herbs and natural remedies so try and use herbal remedies whereever possible.
Arnica for swelling and bruises
Rescue remedy for shock
Pepermint for wind
Chamomile for protection against colic
Devil's Claw tonic for stiff joints and aching muscles
Horseradish tonic for hayfever
Echinacea for colds and infection