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A 33-year-old female asked:

i have a pre-standing (non-drug-induced) prolonged qt. which antibiotics are safe and do not affect qt? cannot find any data on this.

1 doctor answer2 doctors weighed in
Dr. Liviu Klein
Cardiology 23 years experience
Most: Quinolone or macrolide antibiotics are the ones mostly associated with prolonged QT. The other classes are safer. As always, beware of interactions with other drugs you are taking or over the counter medication. A pharmacist should be able to run an interaction checker for you.

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Last updated Oct 11, 2015
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