 [ Symptoms ] is cephalexin part of penicillin family andor is it derived from mold  skin tests show i am severely allergic to mold and when i take antibiotics from the penicillin family i have severe reactions my father is allergic to penicillin and if he takes it he will die i also cannot take erythromycin due to severe allergic reactions and my mother is allergic to it if she takes it she will die i know i can take ciprofloxacin and doxycycline but i would like to be able to take something when i get strep throat can i take keflex is it derived from mold [ Disease ] you need to opt for accutane 10mg to treat your severe acne i personally used it for 6 months when i used it for 2 3 months it did not show any result and i am totally about to leave it but when i consult to my doctor she told me that do not leave it in mid and keep continue for some months then i continue and in next month i start having results and along with it i used retino a which is the first fda approved cream as a rich source of vitamin a and recommended to treat acne but it is advised to use retino a at night for best results and to avoid irritation redness itching and inflammation etc and they are over the counter medicines and easily available at online pharmacies like drugpillstore etc so you may opt for them for the best results i wish you best of luck