Should I take weight loss supplements with the drug levoxyl (thyroxine)?

Careful of caffeine. As you may already know, many of theses so called "diet" supplements contain caffeine or caffeine like ingredients that tend to raise heart rate. Those who have hyperthyroidism, especially if not treated or under treated, can be at risk of cardiac arrhythmias/fainting spells if large amount of caffeine ingested.

Related Questions

Hi, is it safe for me to use a weight loss product called XLS medical while taking 150mg of thyroxine per day?

XLS. With 150 of thyroxine you should have enough medicine to prevent weight gain and may help weight loss. Have your doctor repeat your thyroid labs - you may need more thyroxine. You must also take good control of your diet and exercise regularly. Read more...