Exposure to plants, chemicals, or food found in new places may result in an unexpected allergic reaction. Over-the-counter (OTC) antihistamines are appropriate for non-threatening reactions or insect bites. Many antihistamines are now available in a non-drowsy formula, and an added bonus is that they also aid in motion sickness. Antihistamine or steroid creams can be applied directly to an affected area of skin and may prove helpful for minor reactions.
Every medical kit should contain antacids. Indigestion can creep up just as easily at home as it can abroad. Experimenting with exotic food is a perk of overseas travel, but dishes unfamiliar to the digestive system may create discomfort. Consider putting an OTC anti-diarrheal remedy in your kit for short-term treatment of loose bowels, along with a laxative alternative. In some cases, your physician might prescribe an antibiotic to treat common gastrointestinal illness caused by bacteria known to exist in certain parts of the world.
Antiseptics come in many forms including liquids, creams and wipes. Bring along bandages, and include gauze if you have room in your kit. Covering a wound after cleaning will protect it from infection in unclean conditions. A sturdy thermometer is good to have in the unfortunate occurrence of infection. Bring tweezers to remove splinters or small objects from skin.
Always have a supply of sunscreen, and because cloudy skies do not guarantee protection from sun exposure, bring cooling salve or aloe to treat burned or wind-chapped skin. Non-aerosol insect repellent, gloves, and a surgical mask will provide some security from exposure to airborne and blood-borne illnesses. Bring along a water bottle that filters water, or some water-purifying tablets. A cell phone with charger may already be included in your personal items, but an extra cell or a phone card with emergency numbers might be useful in an emergency.
Acetaminophen and/or ibuprofen make a good foundation to any medical kit. In addition to pain relievers, also consider incidentals like lip balm, petroleum jelly, blister relief bandages, nasal spray, eye wash, and OTC remedies for cough and congestion. You may also find a small knife, safety pins or a small pair of scissors helpful during your stay away from home.