Is there any fat blockers or safe diet pills to take while having hypothyroidism and taking levothyroxine?

Diet pills: With or without thyroid problems the answer is the same. Generally, fat and carb blockers don't really work well for weight loss. There really isn't any magic pill do lose weight safely. The best way to lose weight is by changing your lifestyle to a healthier one. Eat the right portions, eat 3-5 small meals a day, cut back on carbs and sugars, increase lean protein intake & exercise regularly.