Wikipedia's description about Tofisopam prescription duration (12 weeks)

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I am Japanese and have been tapering tofisopam with several withdrawal(?) syndromes.

 

Wikipedia (https://en.wikipedia.org/wiki/Tofisopam) says “(Tofisopam) is still recommended to be prescribed for a maximum of 12 weeks.”. However, it doesn't show the the source of "12 weeks".

 

If someone knows the source of "12 weeks", please show me the source.

 

The reason why I ask you the above is that there is no restriction on the duration of prescription about tofisopam in Japan. Therefore, my psychiatrist rarely believes the existence of the withdrawal syndromes of tofisopam.