The effect is absolutely ok. I have been habitually constipated since I was a child. When I was a kid, I used to use Kaiselu. Later it got bigger. Take medicine and add Selu. I went to many hospitals. Until 2016. I met Yu Zhilin. Originally, I bought it with distrust in my heart. Waiting for the medicine to be received. Ate for a day or two. The effect is very good?! And the after-sales service is very considerate. After a while, he will call me to check on my health. It took me three years to call. Each phone call lasts about 30 minutes! I am 20 years old this year. No more constipation. Thank you very much Yu Zhilin!