There are no specific dietary requirements while taking Lithium. While taking lithium, do not make sudden changes to your salt intake. A sudden decrease in sodium intake (a component of salt) may result in higher serum lithium levels, while a sudden increase in sodium might prompt your lithium levels to fall.Click to see full answer. Thereof, what does lithium do to sodium levels?Lithium can cause hyponatremia by decreasing sodium reabsorption by the renal tubules, leading to sodium depletion.Similarly, what is the relationship between lithium levels and sodium electrolyte levels? Serum electrolyte concentrations are measured to help diagnose electrolyte problems, especially with sodium, that are related to depression. Treatment with lithium can lead to renal problems and electrolyte problems, and low sodium levels can lead to higher lithium levels and lithium toxicity. Beside above, does lithium cause hypernatremia? Lithium. Lithium (Li) is the commonest drug causing hypernatraemia; serum sodium levels as high as 196 mmol/L have been reported . Lithium-induced NDI is usually reversible upon stopping therapy, but a few patients remain symptomatic long after discontinuation of Li .What are the most common side effects of lithium? Common side effects of lithium can include: Hand tremor (If tremors are particularly bothersome, dosages can sometimes be reduced or an additional medication can help.) Increased thirst. Increased urination. Diarrhea. Vomiting. Weight gain. Impaired memory. Poor concentration.