Brief Answer: Probably yes Detailed Answer: There is no published study in world thyroid literature to my knowledge that has looked at methimazole and herbalife taken together. So I am not aware of any reported adverse interaction between these two. Further nutritional supplements like herbalife fall under the category of nutraceuticals which are not required to be regulated by the FDA as opposed to prescription medications that are rigorously approved by FDA standards for safety and effectiveness.

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Brief Answer: Probably yes Detailed Answer: Again, nutraceuticals like herbal life do not publish data in medical journals where studies are rigorously vetted before they are shared with the scientific community. So I am not aware of any hard evidence where herbal life was compared with thyroid medication. So if it does not contain iron and calcium which are very well known to impede the absorption of thyroid medication, it should be ok. If it does contain such substances that may potentially reduce the absorption of thyroid medication then herbal life should be taken at a different time of the day than thyroid medication.

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