What levels should be monitored while taking lithium to ensure safe absorption of the medication?

Monitoring sodium levels is crucial for individuals taking lithium because lithium’s absorption and excretion can be significantly affected by sodium balance in the body. Lithium is a salt, and if sodium levels are low, there can be increased reabsorption of lithium in the kidneys, leading to elevated lithium levels in the bloodstream. This can put the patient at risk for lithium toxicity, which can have serious consequences, including cognitive impairment, tremors, and even seizures.

In addition to sodium, several other factors can influence lithium levels, such as hydration status, renal function, and the use of diuretics. It's important for healthcare providers to assess these variables regularly to ensure the patient remains within the therapeutic range.

Monitoring potassium, calcium, and chloride levels is not as critical in the context of lithium therapy. These electrolytes do not have the same direct relationship with lithium pharmacokinetics.