Avoid spending time in the sun while taking Risperdal, because it may make your skin especially sensitive to sunlight. When you're in the sun, use sunscreen and wear protective clothing.
Risperdal may make it harder for your body to cool down when it gets hot or warm up when it gets cold. Avoid extremes in temperature to prevent hypothermia (from extreme cold) and heat stroke (from intense heat). You should also be careful about intense exercise.
Don't take Risperdal if you're breastfeeding. It may be passed into your breast milk, causing increased drowsiness in your baby and possible developmental delays.
Finally, you should avoid taking any new medicine or supplement while you're on Risperdal without first talking to your doctor.