xismybaby, ive been on tetracycline along with benzaclin for one week 4 days. The benzaclin is really drying my acne out and it is alot better. I use that morning and night. I dont think its been long enough yet to see any effects with tetracycline. I also take that morning and night, 500mg pills. I was on tetracycline before for about a month and a week and it cleared my face up pretty good, but I never took it right(always with food or milk or something) so I am hoping to see better results this time. My derm also said I probably wont see much happening for 6 weeks. Ill let you know how I do. Thanks everyone for your replys.