There are currently 1.5 million people addicted to prescription drugs in the UK. The abuse of these types of substances is taking place in the shadows and its extent is still unquantified.
Local GPs need to report their suspicions and collate information to illuminate this problem.
Lack of action would lead to "catastrophic consequences", Mr Vaz said.
The committee cited work by the All Party Parliamentary Group for Involuntary Tranquilliser Addiction which estimates that 1.5 million people are addicted to these type of drugs, far higher than those who are in treatment for addiction to illegal drugs.
More top news
Monarch's package holiday licence has been temporarily extended with the airline receiving "significant further investment".
Ex-football manager Harry Redknapp told undercover reporters his own players bet on the result of one of their own matches, it is claimed.
A soaking then sunshine this weekend