Hello, I was prescribed Doxycycline Monohydrate 100MG twice a day ( with or without food), and I am a weightrainer and lift heavy 5 times a week. I am 22, 5'10, and trying to my mild acne. I keep reading that the medication will inhibit protein synthesis, and kill all the good bacteria in my gut. My Question is : Will doxycycline affect or limit muscle growth? Because if so then the hard work in the gym will be pointless. I am also taking Whey Protein, and Creatine ( both are 2 hours separated form doxy)