Always carry a letter from your doctor stating that it is prescribed medication for personal use. The letter doesn’t have to say what it’s for.
It’s a good idea to list medications by name with daily dosages. You may of course wish to re-think this if you are visiting a country with restrictions on entry for people with HIV. Obviously always have enough meds for your trip, and even take a few days extra in case of unforeseen travel delays, but do not carry excessive amounts as this may be deemed as intention to overstay by immigration and customs officials.
Most medications should be kept at room temperature. This should be considered when travelling, especially if you plan to carry your meds on long car journeys in summer months. Some drugs may also require refrigeration. You should check this with your doctor.