Aroha Nuku failed a routine drug test last September, after playing for the Cyclones in their Round four match of the Farah Palmer Cup.
The test found traces of methamphetamine and dextroamphetamine.
According to Drug Free Sport NZ, on the night she was tested Ms Nuku declared the use of supplements and hay fever tablets.
However, she later admitted to also taking what she thought was ritalin in powder form during a drive between Palmerston North and Hawera earlier in the week.
