It seems the Government's spending far less than promised on a highly effective methamphetamine programme.

It promised to spend $38-million this Parliamentary term to expand the Te Ara Oranga programme to another four thousand people.

But figures released to RNZ show it’s spent less than a fifth of that.

The programme has a 34% harm reduction rate.

Drug Detection Agency chief executive Glenn Dobson told Tim Dower that that's significant for any rehabilitation programme - particularly for meth.

He says it's an incredibly difficult drug to rehabilitate, as there's both a physical and psychological dependency, and results indicate the programme’s been successful across the community.

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