I started iv rocephin (ceftriaxone) for lyme disease 6 days ago. i developed a loose stool 3 days ago, no gas, no foul smell, 4-6 movements a day.

Common problem: Antibiotic- induced diarrhea is fairly common. As long as you do not have other symptoms like severe abdominal pain, fevers, GI bleeding, it should be ok and stop when you finish your antibiotic regimen. If you do develop these symptoms, call your doctor immediately to make sure you have not developed a secondary intestinal infection called c. Diff colitis. This can be a very serious condition.

Family practice : It probably is related to your Rocephin (ceftriaxone) dosing. Let your dr know. You can develope a c. Difficele colitis if on antibiotics for an extended period of time.

C. diff infection: This may the beginnings of a c. Diff infection precipitated by the use of rochephin. Call your doctor soon and tell him/her what is going on.

See below: You need to let doctor know immediately as this be a sign of allergy or worse case scenarios c. Diff infection or pseudomembranous colitis. Hope you feel better.

Flora: This sounds like a disruption in the normal gut flora. Probiotics (yogurt, buttermilk, florastor or other capsules) can help restore the normal balance. Occasionally, dangerous over-growths of certain bacteria can occur as a result of antibiotic use. I think it's reasonable to try the above measures for a few days before seeing the doctor unless one is dehydrated or progressively gets worse.

Antibiotic Effects. : This would be a common side effect of antibiotics. Keep hydrated and try to reestablish the normal bacteria in the intestine with yugort.

See below: You have either antibiotic associated diarrhea(aad) or clostridium difficile colitis. You need to have a stool specimen checked for c. Difficile toxin. Probiotics such as vsl#3 and florastor decrease the incidence of aad and c. Diff.