We had a sweet little 6 year old mixed breed dog named Peaches. Peaches was very healthy until she took the heartworm drug Trifexis. Suddenly she became very anemic, her blood was only at 10 percent. Over the next month, all her organs started failing and she had internal bleeding. Peaches died on Monday, July 30, 2012. Let's get together and stop the makers of this nightmare from hurting everyone's pets! This drug is known as Panoramis outside the US.