You are talking about the desert ginseng and cistanche deserticola product endorsed by Chiba Shinichi. I can tell you with certainty that there are no side effects. This product is patented in Japan, advertised on TV, and sold in convenience stores. Very popular. If there were any side effects, Japan should have responded long ago in the past few years.
It is also very popular now. The response from Japanese society has been very good. It's a warming tonic.