By Amy NortonĀ 

HealthDay Reporter

THURSDAY, April 6, 2023 (HealthDay News) — A “morning after” dose of a common antibiotic can greatly lower the chances of sexually transmitted bacterial infections in high-risk people, a new clinical trial has found.

Researchers discovered that taking the antibiotic doxycycline within 72 hours of unprotected sex slashed the risk of gonorrhea, chlamydia and syphilis by two-thirds among gay and bisexual men and transgender women who either had HIV or were taking medication to help prevent HIV.

The benefits at the one-year mark were considered so convincing that the trial was stopped early.

Experts said the findings, published April 6…


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