Is it safe to take over counter appitite suppressants if I'm taking low dosages of Zoloft and wellbutrin (bupropion)? I have no other medical issues

In short, No. The otc supplements are likely stimulants (which will adversely affect your heart and even how well your antidepressants work) and made by companies that are unregulated by the fda. Eating differently and less is a start along with changing the amount you move. That's the long game to staying healthy. The short? Chew gum after lunch, drink water instead of soda, and eat a nutritious breakfast.