Northern Territory Police have arrested a woman on drug related charges in Alice Springs.

A 51-year-old woman was arrested by Members of the Drug Investigation Unit in relation to the alleged purchase of the drug methamphetamine, yesterday.

The woman will appear in the Alice Springs Local Court today charged with one count each of:

• Supply trafficable quantity of methamphetamine
• Possess trafficable quantity of methamphetamine
• Possess thing to administer dangerous drug.