Hello, I would like to ask how it is with long-term use of streptokill. My son has been taking streptokill for 7 years and it works great every time he has a sore throat. Now we can't get rid of strep throat. he doesn't have any symptoms, his throat doesn't hurt, he's fine, but it's still there in the throat swabs. Can STkill be used long-term, for example a month, to eliminate the streptococcus? And if so, in what doses please? Thank you very much for the answer. Sincerely, Lucie K.