Could more protein keep dialysis patients healthier?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age ≥ 18 years (no upper age limit) * Patients receiving maintenance dialysis for ≥ three months * Ability to provide informed consent Exclusion Criteria: * Anticipated live donor kidney transplant and/or kidney recovery within the period of sample collection. * Anticipated change of dialysis modality within the period of sample collection * Severe malnutrition based on either: * Renal 7-point Subjective Global Assessment (SGA) scores of 1-2 * Global Leadership Initiative Malnutrition (GLIM) Stage 2 * Protein-losing enteropathy. * Persistent nephrotic syndrome with \>3g/day urinary protein loss. * Active wounds or burns contributing to protein losses as judged by the investigator. * Current active acute inflammatory illness (likely to have catabolic effect in the opinion of the investigator). * Current malignancy based on recent (\<12 months) diagnosis and/or active treatment for malignancy and/or planned treatment for malignancy, excluding non-melanoma skin cancers. * Pregnancy (current or planned within duration of study) or breast feeding. * People with swallowing difficulties precluding safe ingestion (International Dysphagia Diet Standardization Initiative (IDDSI) level 0 thin fluid). * People receiving intradialytic parenteral nutrition or intra-peritoneal amino acids, or any other forms of artificial feeding * People prescribed levodopa * People who are receiving chronic glucocorticoid therapy (\>10mg day prednisolone or equivalent for \>7 days within preceding 90 days). * People who are consuming a protein dietary intake above 1.5g protein/kg/body weight. * People who, in the opinion of the investigator, will be unable to comply with study protocol requirements. * People who are vegan or other religious based dietary restrictions which would prevent them taking the supplement.