You can take 1000 mg of Zithromax for one dose to cover it.
I really wouldn't recommend taking tetracycline 250 mg once a day if you have Zithromax. The Zithromax would be better.
Please make sure that the antibiotics you are using are not expired. They will NOT be strong enough if they are expired. There should be a date on the package.
If your symptoms continue after you have used the antibiotics, please seek medical diagnosis to prevent complications.
Please let me know if you have any other questions!!
Also, please PM (private messsage) after the question is closd and let me know how you are!!
Take Good Care! Nancy