Doxycycl Hycl 100mg Side Effects And Concerns

Sarah R Says:
Tue, Oct 14 '14, 10:16 AM

Hello I am worried about taken any meds at all.I have been sick for four months with chronic bronchitis,this is my third bought of antibiotics,all three being different.first the z pac then bactrim now this.I was wanting to know if i could experience life threatening side effects if i have taken this medicine before? I have taken it 7 years ago for rocky mountain spotted fever. I know i need to take it ,i just hate anything unnatural in my body And if so how long would it take to have an allergic reaction? thanks

Verwon Says:
Fri, Oct 17 '14, 2:48 PM
Hello, Sarah! How are you?

No, whether or not you've taken it before should have no bearing on such side effects. The only issue would be if you had an allergic reaction to it in the past, because those tend to get worse with repeated exposure.

You might be thinking of antibiotic resistance, but that usually occurs with many repeated uses of the same antibiotic, or by not finishing your course of treatment in full.

If you have an allergic reaction to it, it could occur almost instantly, within minutes of taking the first dose, or as much as week or two into treatment. Severe allergic reactions that usually include swelling and blockage of the airways tend to occur very fast, while more mild ones, such as skin rashes and hives can sometimes take longer and occur further into treatment.

Common side effects may include nausea, dizziness, non-allergic skin rash and diarrhea.

Are there any other questions or concerns?