Hello,
I am studying to become a personal trainer so I can put forth all the information I have learned so far. There are no such supplements that could help you loose weight. The only healthy option to loose weight is through fat burn which is only possible through exercise. You have mentioned that you workout for 30 min a day for 3-4days/week but in order to loose weight you should exercise for at least 60min/day for preferably all days of the week and at least 5days/week.Try doing cardio for 30-40 min and do stretches for the rest of the time -dont forget to do the warm up and cool down forr 5-7min.To loose weight in a healthy manner you should consume at least 1100 calories/day. If you eating the vegetables and the fruits then you don’t have to worry about your vitamins or minerals. Not to forget that if you are working and you think you haven’t lost any weight that means that the weight lost by fat consumption has been replaced by the amount of muscles made which is good because muscles have a greater metabolic rate. Just watch your diet, dont eat any junk food and exercise regularly and you will loose weight in a healthy manner. it is best if you are loosing about 2 pounds/2 weeks. Good luck and feel free to ask me if you need any help or if you have further questions.