My dr has told me that taking it every two days does work, just not as effectively. But its a good way to ease into having the drug in ur system, and a good way to ween ur body off it, rather than just stopping abrubtly.
Ive been on duromine 4 months in a row now, and about to start my 5th.
I did 15mg for the first month, and then 3 months of 30mg, and now about to start 40mg.
My dr has told me that u CAN take it for more than 3 months, just not at the same dose, because after 3 months on the same dose/regularity, it loses its effectiveness.
I have read on other forums and seen youtube videos of people who have taken it for over a year.
If its the real thing u are taking, prescribed by a dr and purchased at a pharmacy, not bought online from some unauthorised website or email address, then its relatively safe to take for extended periods of time.
Just make sure u visit ur dr before the end of each month and tell them what uv been thru and experienced exactly, and they will know by ur experiences and weight loss, exactly what dose to keep u on and how often to take it.
The body will develop some level of addiction to it, which is why u need to ween urself off it the same way u ease into it, every 2nd day, then every 3rd day, etc.
Thats what my dr has told me anyway.
Best of luck.