I have taken Zephrex for over 10 years. I take Zephrex LA and have had no serious side effects. Zephrex makes my life bearable when the mold count hits 2000 here in Ohio.
I cannot take Zephrex after 6 PM or I cannot sleep I take one tablet instead of two a day usually about 10 am.
I am not as happy with the generic.
Thanks