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It helps me reduced the cough and the taste is not as good as the anti-cough syrup 😊 but it works. I used the salty soy ketchup.. though I can use the sweet soy ketchup too which has good taste but for different kind of cough. The salty one is like an expectorant☺

that's really interesting...also had no idea there was a thing such as sweet soy sauce. When I think of soy sauce, all I think of is saltiness