JK98, what you suggest will not work for everyone. It depends on how your endocrine system is doing. Based on the symptoms, I would say candida is definitely involved in this case, but the loss of weight and panic attacks suggests problems with both the thyroid (overactive) and adrenals (also overactive). If the thyroid is underactive you will you see benefits from taking a lot of supplements, like strong B-complex etc., but if the thyroid is not underactive, it tends to be overactive and you will only see more overactivity as a result. Which is not desired of course. Same goes for St. John's Wort, it can be a really bad idea to use it for those who haven't got an underactive thyroid.
What helps here is to avoid foods that increase thyroid hormones, and I've seen cases where magnesium (as JK98 suggested here) and copper helped, while zinc caused more thyroid overactivity problems.