Duromine vs Ionamin

Ionamin and Duromine are two trade names of weight loss drugs, containing active ingredient Phentermine. Ionamin trade name gained a vast popularity in the USA and UK, while Duromine became popular in Australia and NZ.


American people found out about Ionamin anti-obesity drug over 50 years ago. The FDA approved Ionamin for obesity treatment in 1959. Ionamin drug was on sale on prescription in the U.S. pharmacies for 30 years. In January 1982, the sale of Ionamin was discontinued.

Classification of Ionamin in the USA: Rx Only

Ionamin drug was on sale not only within the USA, but also in the UK. Obese British people have been using Ionamin for weight loss since 1981. In 2000, the weight loss drug Ionamin was withdrawn from European pharmaceutical market and the sale of Ionamin within the UK was stopped. Today, Ionamin is no longer available at the UK pharmacies.


Australians found out about the weight loss drug Duromine a little more than twenty years ago. Duromine was included in the ARTG in 1991. For over 20 years now, Duromine drug has been available at Australian pharmacies on prescription only. In 2013, Duromine became the most prescribed prescription weight loss drugs in Australia.

Classification of Duromine in Australia: S4 – Prescription Only Medicine.

Duromine drug is sold not only within Australia, but also in NZ. At pharmacies in New Zealand, Duromine drug is available since 1969. Thus, Duromine has been prescribed to obese and overweight New Zealand inhabitants for intensive anti-obesity therapy, for over 60 years now. Moreover, Duromine is the most popular weight loss product in both Australia and NZ.

The main similarities and differences between Duromine and Ionamin

If you want to buy Duromine capsules or Ionamin capsules, but they are not available in your city, ask the doctor under what brand names Phentermine-containing drugs are on sale. Probably, the doctor will prescribe you some alternative weight loss capsules Metermine, Suprenza, Adipex-P, Qsymia or Acxion instead of Duromine or Ionamin.