- Guggul works by stimulating the thyroid gland. If you have pre-existing issues with your thyroid, it is important to speak to your doctor about your hormone levels before taking guggul.
- Guggul can also have an effect on liver enzymes. People with liver problems should only take guggul after consulting a physician.
- Guggul has been known to cause digestive issues in some people. Those who have problems with diarrhea probably should not take guggul.
- Though there are no known drug interactions with guggul, people who take drugs for cholesterol or thyroid hormones will want to be careful when taking guggul.
- Since guggul stimulates the thyroid, some people may experience heart palpitations, weakness and anxiety when taking guggul.