Farmville, Virginia
A 22-year-old female asked:
Can bicillin l a injection make me drowsy, lightheaded and make my lower back, butt, and leg sore?
1 doctor answer • 1 doctor weighed in

Dr. Hunter Handsfieldanswered
Infectious Disease 55 years experience
Jarisch-Herxheimer?: Benzathine penicillin (Bicillin LA) can cause injection site (buttock) soreness, maybe felt in leg and back on the same side. Bicillin itself won't make you drowsy or lightheaded, but treatment of syphilis (almost the only thing treated with Bicillin) can cause fever, muscle aches, and maybe these symptoms in the first 24 hours ("Jarisch-Herxheimer reaction"). Discuss with the doctor treating you.
Created for people with ongoing healthcare needs but benefits everyone.
2.4k viewsAnswered >2 years ago
Last updated Aug 25, 2015
People also asked
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $44!
50% off with $15/month membership
Disclaimer:
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.