Levothyroxine or L-thyroxine is a synthetic hormone used for the treatment of hypothyroidism or underactive thyroid. Taking L-thyroxine can aid in your weight loss efforts since it increases your metabolism and helps you burn fat. Losing weight requires burning more calories than you consume. L-thyroxine helps you burn more calories, but you can increase your results with a healthy diet and exercise.
Step 1
Take L-thyroxine according to your doctor's recommendation. Talk to your doctor if you eat a lot of fiber or soy because this may affect the absorption of L-thyroxine, according to MayoClinic.com.
Step 2
Eat healthy foods. Consume low fat foods such as lean meats, fresh produce, whole grains, brown rice, fish, eggs, low fat dairy and good fats such as olive oil, nuts and seeds. Eating natural, unprocessed foods keeps you fuller with fewer calories to aid in weight loss.
Step 3
Watch how much you eat. Count your calories daily with a food journal or online weight management program such as MyPlate on LIVESTRONG.COM. Track your meals for a week to see your average consumption. Subtract 500 from your average to see your daily calorie target to lose about 1 to 2 lbs. per week.
Step 4
Perform circuit training workouts three days per week to build muscle and burn more calories. Train one exercise per muscle group for one set of 20 repetitions. Include exercises such as tricep dips, squats, push-ups and chest presses. Rotate through each exercise for 30 minutes. Keep your rest periods short between exercises to keep your heart rate elevated and burn more calories.
Step 5
Engage in 30 minutes of cardiovascular exercise four to five days per week to burn fat. Ride the stationary bike, jog outdoors or walk on the treadmill. Switch your cardio choices often so your body continues to respond.



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