Having kidney disease, heart disease, or liver cirrhosis Being older, such as over the age of 65 Engaging in intensive exercise regularly, such as triathlons, marathons, and ultramarathons Taking certain medications, such as antidepressants, diuretics (blood pressure medication), and some pain relievers

Nausea Headaches Cramping Weakness

Nausea and Vomiting Confusion Seizures Loss of consciousness

Low blood sodium can be a serious condition, so it’s important to get treatment right away if you suspect a problem.

Thiazide diuretics Selective serotonin reuptake inhibitors (SSRIs) Carbamazepine (Tegretol) Chlorpromazine (Thorazine) Indapamide (Natrilix) Theophylline Amiodarone (Cordarone) Ecstasy (MDMA)[8] X Trustworthy Source American Academy of Family Physicians Organization devoted to improving the health of patients, families, and communities Go to source

Kidney disease Heart disease Liver cirrhosis Syndrome of inappropriate anti-diuretic hormone (SIADH) Hypothyroidism Hyperglycemia (high blood sugar) Severe burns Gastrointestinal illnesses that cause diarrhea and vomiting[10] X Trustworthy Source American Academy of Family Physicians Organization devoted to improving the health of patients, families, and communities Go to source

Tolvaptan (Samsca) is a common medication that is used to treat low sodium. Tell your doctor about any other medications you are taking and follow your doctor’s instructions for how to take this medication. If you take Tolvaptan, consult with a nephrologist so you don’t increase your blood sodium levels too much. [12] X Trustworthy Source MedlinePlus Collection of medical information sourced from the US National Library of Medicine Go to source

Sepsis or a blood infection can cause your blood sodium levels to drop severely.

Limiting water consumption usually only happens if you’re diagnosed with low sodium due to syndrome of inappropriate antidiuresis (SIADH). Your urine and thirst level are good indicators of whether or not you are getting enough water. If your urine looks pale yellow and you are not thirsty, then you are well-hydrated. [15] X Trustworthy Source Mayo Clinic Educational website from one of the world’s leading hospitals Go to source

Sports drinks contain essential electrolytes, such as sodium and potassium.

Thiazide diuretics are known to cause low blood sodium levels. [17] X Trustworthy Source Mayo Clinic Educational website from one of the world’s leading hospitals Go to source