There are many first aid kits available and you may like to purchase one off the shelf or create your own.
EACH INDIVIDUAL should also ensure they take adequate supplies of their personal medication plus any emergency medications for known allergies (eg. if allergic to Penicillin, take a supply of an antibiotic that you can use - a doctor will prescribe this to you if you explain that you are going on a remote trip where emergency assistance could be days away). Some standard additions to any kit should be:
Antihistamine tablets (non-drowsy)
This is especially useful as a preventative treatment for sand-fly bites for people known to have adverse reactions to bites.
Each person in your party should see their doctor before travel departure and request a course of antibiotics to take just in case of infection. It is very unsafe practise to take another person's medication and since antibiotics are only available on prescription, then each person should have their own medication and dosage clearly labelled and stored in the First Aid Kit. Common infections in the outback that require antibiotic treatment are: ear infections and skin infections.
Diarrhoea and Vomiting
Not only uncomfortable when travelling but increases the chance of dehydration. Take anti-diarrhoeal medication and Fluid and electrolyte replacement medications (eg. Gastrolyte, a water soluble powder). Note - drinking untreated water that comes directly from lakes and rivers may contain Giardia parasites that cause diarrhoea. This parasite is also spread by touching wild, pet or farm animals and especially after toileting if soap and water is not used before handling food. A typical mistake with food handling when camping is leaving hot food out to cool - this increases the chance of bacteria breeding but the likelihood of a fly landing on the food and laying maggots is extremely high. Flies will usually find a way into food wrapped in foil, so we advise the use of plastic containers with airtight lids. Portable fridges
must be kept below 4 degrees Celsius to keep dairy and meat produce from spoiling. Small temperature gauges are available with probes that can be placed inside to show the internal temperature. If using an esky and ice, be particularly aware of this risk and be wary.