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
The Birmingham singer's dream ended when she lost out to girl group Four of Diamonds in Sunday's sing-off.
The racing driver beat Mercedes teammate Nico Rosberg to pole position.
Police fired tear gas on migrants as flames lit up the 'jungle' camp on its final night before it is razed and its residents dispersed.