I do not take Oxi regularly, but I have lost 12kg in 6 months.
The key has been to stop eating bread and do 3 hours per week of heliptic machine at an average of 165 beats per minute (high performance).
DocLad
Doclad has the right idea.
Cut out carbs. Our bodies evolved on the savans of africa, tailoring us to a primarily meat based diet. Our ancestors also ate berries and some ancient grains. When we consumed these carbs our bodies sent the fat in our diet into storage, with the assumption that the carbs would run out and we would burn the fat at a later date.
In modern times the carbs never run out so your body never uses the fat. If you stop consuming carbs (including sugar) your body goes into ketosis, a fat burning mode that turns fat into ketones like acetone for fuel. Carbohydrates are a non essential nutrient.. your body does not need them. Some fats ( omega3 ) are essential.
You want to eat meat, eggs, fish, nuts, seeds, green veggies.
avoid bread, rice, potatoes, pasta or any grain based food. You want to avoid fruit for the most part but on occasion berries or bananas are okay.
You can still eat bacon, butter and if you want diet pop ( soda ). You cant do this half ass, but it you commit yourself there is lots of good stuff to eat. You can even do baking with almond/coconut flour and ground flax. There is more info online.
good luck