The hyponatremia is caused by a relatively smaller loss in total body water. 1  any cause of hypovolemia such as prolonged vomiting, decreased oral intake, severe diarrhea. 2  diuretic use (due to the diuretic causing a volume depleted state and thence ADH release, and not a direct result of diuretic-induced urine sodium loss)
Biotin is safe but is not likely to do much to help your hair grow unless you are deficient in biotin, which is uncommon. A reasonable dose is 5 mg. However, you may get better results by taking a quality multivitamin, eating a healthy diet rich in organic fruits and vegetables, avoid junk food and getting adequate sleep.
Because lack of biotin is rare, there is no RDA or RNI for it. Normal daily recommended intakes for biotin are generally defined as follows: Infants and childrenâ Birth to 3 years of age: 10 to 20 micrograms (mcg). 4 to 6 years of age: 25 mcg. 7 to 10 years of age: 30 mcg.