Lipozene is a dietary supplement advertised to help with weight loss. Both the wiki page and the official website state that the active ingredient is Glucomannan (considered a dietary fiber), which is extracted from the Konjac Root.

Because it is not classified as a pharmaceutical drug, you can't really get a definite answer through a drug interaction checker. Their FAQ page says "Always consult a health care professional before using this or any other dietary supplements. Stomach discomfort could arise. There are no known side effects when taking Lipozene® or MetaboUP PLUS as directed."

With that being said, if you are already prone to stomach discomfort through your medications or other conditions, Lipozene may exacerbate it. Any dramatic weight loss should be monitored by your doctor since you are already taking medication. If you share the active ingredient with them, they might be able to shed light on its safety. All in all it sounds like the idea behind this supplement is to create a feeling of fullness because the Glucomannan will absorb a lot of water and expand in your stomach, causing you to eat smaller portions. So it's not technically a "drug" in the conventional sense. I hope this helps!