Compound a acid keto tablets, should be compound alpha-keto acid tablets, how long to take can not be determined, can be taken for a long time, it is recommended to use under the guidance of a doctor according to the condition. Compound alpha-keto acid tablets is a compound preparation containing 4 kinds of keto amino acid calcium, 1 kind of hydroxy amino acid calcium and 5 kinds of amino acids. It is used for the prevention and treatment of damage caused by protein metabolism imbalance due to chronic renal insufficiency. For those whose glomerular filtration rate is less than 25 ml per minute, the drug can be taken for a long period of time in conjunction with a low-protein diet of 40 g per day (for adults), and it is recommended that the tablet be swallowed whole during a meal. Adverse effects such as hypercalcemia can occur with the use of this product, and blood calcium levels should be checked regularly and adequate calories should be ensured during the use of the drug. Hypercalcemia and amino acid metabolism disorders prohibit the use of this drug. There have been no cases of overdose so far. It is recommended to use this product under the guidance of a doctor and avoid self-medication.