Of the 1 causes of Dark nails that we have listed, we have the following prevalence/incidence information: 1  0 causes are very common diseases. 2  0 causes are common diseases. 3  0 causes are uncommon diseases. 4  0 causes are rare diseases. 5  0 causes are very rare diseases. 6  1 causes have no prevalence information.
Answers (1) Yes, you could take doxycycline for a strep throat but only if your doctor has prescribed it for you. There are however other antibiotics that will work better for a strep throat. Votes: +0.
Yet, only 20 percent of those patients actually have strep throat. Patients with strep throat should be treated with penicillin or amoxicillin (which must be taken for 10 days) and not with tetracycline, which has a strong link to anti-resistant infections.