Hii , Welcome To HCM & Thanks For Asking Your Query Here 1140 mg is pretty high and before deciding the drug of choice We first need to know the underlying cause of her proteinuria so that we can decide whether it is curable with medications or not Kidney problems are mostly possibly caused by long term high blood pressure and diabetes And as your mom is taking Olmezest means she has High Blood pressures so Treating proteinuria should focus on controlling her High BP so that to prevent further renal damages However there may be involvement of other health issues, therefore a thorough and careful diagnosis is needed and based on that we can decide which medicine may be best for that particular case she is already on ketoalfa which is a good amino acids supplement , omega 3 fatty acids are good choice but you must consult with ur dr before starting any new medicines as Taking self medication can lead to serious outcome in this case and i would strongly suggest you to see a Urologist to further evaluate the issue I hope it help Thanks & Get well Soon