Hotel first aid kits typically contain plasters and not much else. Travel pharmacies in unfamiliar countries are stressful at the best of times and impossible in remote areas. A proper personal first aid kit prevents most travel emergencies from escalating into ruined trips or medical drama.
What a useful kit contains
Plasters and adhesive bandages in multiple sizes. Antiseptic wipes or cream. Paracetamol and ibuprofen (UK-strength). Antihistamine tablets (Piriton). Anti-diarrhoea (Imodium). Rehydration sachets (Dioralyte). Sterile gauze and tape. Tweezers, scissors. Thermometer. Small mirror. Hydrocortisone cream for bites and rashes.
What women might add
Period products (more than you think you'll need). Cystitis sachets (UTI starter). Thrush treatment (Canesten). Spare contraceptive if relevant.
Pack the kit once; refresh contents annually. Saves trips to chemists in unfamiliar countries when problems arise, which they will.