How much fluid a day when taking Tolvaptan?

[Kristo]

Hello everyone,

It’s about my mom:

69F, height 160 cm, weight 75 kg; Medication: Amlodipin, Candesartan, Moxonidin, Provastatin, Levetiracetam;

Non-Smoker;

Medical issues: Hypertension, Epilepsy, reoccurring Hyponatremia (since 2018 8 times incl. + once acute renal failure due to drinking only 1 l a day), Osteoporosis, Cholesterinemia, traumatic brain bleeding in 2008;

Location: Austria

After my mom nearly died twice because of physicians’ mistakes I must sometimes question physicians’ decisions.

I hope you could help me.

My mom is about to be prescribed Tolvaptan 7,5 mg to be taken every third day as an alternative to always going to the hospital for infusions because of reoccurring

Hyponatremia despite fluid intake restriction.

The physician means my mom wouldn’t have to drink more water than usual (1.5 l) on the days of taking Tolvaptan 7,5 mg.

Can it be really right in some cases other than there are other reasons for fluid restriction other than reoccurring Hyponatremia?

It’s just that I have read that when taking Tolvaptan one should drink at least 3 l of water a day incl. 0.5 l before going to bed.

Thank you

[CatOnACloud]

Hi there. On a brief foray into the internet tomes, it cautions its use in anyone over 55 with CKD. It also may matter what level of disease or eGFR numbers your mom has.

Maybe someone else has information for you. I might want to have them check out her adrenal / pituitary gland, as disruptions along the axis can elevate blood pressure while lowering sodium and electrolytes. Never hurts, couple of blood tests…

I am sorry to hear that you too have learned to double check yours care givers. It is imperative. Best to you both, Adrienne