No it does different things depending on what herbs you combine with. It is accurate that the extract reduced gastric HCl in an animal study. That was the herb as a single remedy, it is always combined with other herbs and this helps direct it’s action. The MM sheet pretty clearly describes when to use Shan Yao - Deficient stomach/spleen qi with fatigue, hyperchlorhydria, gastric ulcers, leaky gut, IBS, impaired gastric emptying, etc.