Sergeant's Vetscription Sure Shot '2X' (pyrantel pamoate). For puppies and dogs up to 120 lbs. Liquid wormer. Removes hookworms (ancylostoma caninum, uncinaria stenocephala). Large roundworms (ascarids). Active ingredient 4.54 mg of pyrantel pamoate per mL. ANADA 200-007 approved by FDA. Sergeant's is committed to providing high quality products. If you have questions or comments about this product, please write: Sergeant's Consumer Response, PO Box 540399, Omaha, NE 68154-0399. Visit us at www.sergeants.com.