Lithium has a narrow safety margin. Seek urgent care for signs of too much lithium: vomiting, diarrhoea, coarse tremor, marked drowsiness, slurred speech, unsteadiness or confusion. Dehydration, low salt intake, hot weather, and medicines such as anti-inflammatories (NSAIDs), some blood-pressure drugs and water tablets can raise lithium to dangerous levels. Tell your doctor before starting any new medicine, and keep well hydrated. Tell your doctor about kidney, thyroid or heart problems. Use in pregnancy or breastfeeding only under specialist supervision. Store below 25°C. This product information is for general guidance only and does not replace professional medical advice. Always consult a qualified healthcare provider before starting any new medication or supplement. Keep all medicines out of reach of children.