Vaptan 15mg Tablet can be consumed with or without food It is important to follow your doctors prescription exactly Your doctor will determine the dosage and frequency of intake Regular intake of this medication is necessary to maximize its benefits Do not discontinue usage even if you start feeling better unless advised by your doctor Possible side effects of using this medication may include increased urge to urinate frequent urination dry mouth increased thirst and constipation If any of these side effects persist or worsen inform your doctor Prior to using this medication inform your doctor if you have any kidney or liver issues While using this medication your doctor will closely monitor the sodium levels in your blood Additionally make sure to inform your doctor about any other medications you are currently taking