Open randomized controlled trial of the Jianpi Yifei Decoction in the treatment of bulbar paralysis of amyotrophic lateral sclerosis

INTERVENTION: Chinese medicine :Jianpi Yifei Decoction ;Riluzole:Riluzole; CONDITION: amyotrophic lateral sclerosis PRIMARY OUTCOME: Water swallow test;Frenchay dysarthria assessment;The ALSFRS‐R scale;Swallowing angiography;Strobe laryngoscope; SECONDARY OUTCOME: liver function;Creatinine; INCLUSION CRITERIA: 1. At the age of 18 years old and above, not limited to men and women; 2. Meet the diagnostic criteria for ALS diagnosis / probable; 3. The patients' informed consent to accept the trial; 4. Women must not be able to become pregnant for the duration of the study. Women of childbearing potential must have a negative pregnancy test at screening and be non‐lactating.