Dietary Potassium Liberalization in Pre-Dialysis Patients

Inclusion Criteria: * Male or female, aged 18 years or above * Participants who have an estimated glomerular filtration rate between 15 and 45 ml/min/1.73m2 * Serum potassium concentration between 4.5 and 5.5 milliequivalent (mEq)/L * Hemoglobin A1c ≤ 11% * Systolic and diastolic blood pressure \<160/100 mmHg * Are registered in the multidisciplinary nephrology clinic in Winnipeg * Able to communicate in English and provide written informed consent Exclusion Criteria: * Serum potassium concentration \> 5.6 mEq/L, anuria, dialysis, or acute kidney injury failure in the 6 months prior to screening * Chronic obstructive pulmonary disease that requires the participant to be on oxygen * New York Heart Association Class 3-4 Heart symptoms or heart, liver or renal transplant * A myocardial infarction or stroke within the last 6 months * Unable to consume study treatments or control, such as swallowing or gastro-intestinal issues * Currently on potassium binding therapy * In the opinion of the investigator any medical condition, uncontrolled systemic disease or concurrent illness that would decrease the study compliance or jeopardize the safety of the participant * Female participant who is pregnant or lactating