Pre-medicating for a root canal

I had a root canal today on tooth #20. And he prepped me for a new crown on that tooth.

The dentist had me begain taking Clindamycin last Thursday. He wanted me to start five days before the procedure and keep taking it for five days after. Three per day, a total of 30. It's strange to take a drug when there's no infection because I had a knee operation six months ago.

I had a bad reaction to the drug and called him and the knee surgeon's nurse about the violent diahrrea I was having. Both told me it was the best drug for pre-medicating in this situation and I should keep on with it. And take lots of Imodium and eat plenty of yogurt.

I finish the pills on Saturday and I can't wait.