Some preventatives such as Enterovioform can have serious side effects if taken for long periods. Paradoxically constipation is also common, probably induced by dietary change, inadequate fluid intake in hot places and long bus journeys. Simple laxatives are useful in the short-term and bulky foods such as maize, beans and plenty of fruit are also useful. Heat and Cold Full acclimatization to high temperatures takes about 2 weeks. During this period it is normal to feel a bit apathetic, especially if the relative humidity is high.
Tepid showers are more cooling than hot or cold ones.
Large hats do not cool you down, but do prevent sunburn. Remember that, especially in the highlands, there can be a large and sudden drop in temperature between sun and shade and between night and day, so dress accordingly. Warm jackets or woollens are essential after dark at high altitude. Loose cotton is still the best material when the weather is hot. Insects These are mostly more of a nuisance than a serious hazard and if you try, you can prevent yourself entirely from being bitten.