I don't understand what you mean, what do you mean "WEAK No reply on Lemon Balm for me..." ? There are plenty of positive benefits taking Lemon Balm which for many would far outweigh any negatives. Regarding the potential Goitrogen connection remember there are many many natural foods that have a Goitrogen connection and plenty of people happily eat them without impact on their thyroid. The only really way you'll be able to ascertain if Lemon Balm is impacting your thyroid is to run a series of blood tests over a period of time to monitor your thyroid. There are of course many other variables to consider (e.g. supplements, food and drinks etc.). In summary if you are finding you doing ok with Lemon Balm and you are still concerned then you could try reducing your dosage to one 500 mg per night prior to going to bed. I'm doing well on one 500 mg Lemon Balm prior to bed and I'm not concerned about a Goitrogen connection, Lemon Balm offers many benefits including an overnight antioxidant.