There has been some talk about obtaining Duromine without a prescription. But as a form of Phentermine, that would be highly illegal among other things. It is an appetite suppressant sold in Australia in 3 strengths: 15mg, 30mg, or 40mg depending on the individual. They generally provide 30 capsules at a time, and the active ingredient, Phentermine, is combined with a resin to slow release, giving Duromine a time released effect. It is manufactured by 3M and also distributed throughout New Zealand, but not in the United States, especially in the 40mg dosage, which is above any product within the United States. It is generally prescribed to the morbidly obese with other related medical conditions, and it is not recommended for those 16 years or younger or the elderly. It is only to be distributed as a prescription due to side effects such as restlessness, euphoria, light headedness, increase in blood pressure, dryness of the mouth, impotence, excess energy, dysphoria, weakness, fatigue, unpleasant taste, change in sex drive, insomnia, difficulty breathing, ankle and extremity swelling, headaches, diarrhea, and constipation.