ADD LIFE —
QUEST shows that VETMEDIN
lengthens life
The goal of the QUEST1* study was to compare the effects of VETMEDIN and
benazepril on quality of life and survival† in dogs with congestive heart failure (CHF)
resulting from naturally occurring myxomatous mitral valve disease (MMVD). The
study showed that dogs treated with VETMEDIN lived nearly twice as long as those
on an angiotensin-converting enzyme (ACE) inhibitor.1
Hear an investigator discuss the unprecedented scientific rigor of the
QUEST study.
QUEST was also designed to be completely independent in design and results
reporting. Investigators were guaranteed the right to publish study results
regardless of the outcome.
VETMEDIN lengthened life
VETMEDIN significatnly improved survival time in the QUEST trial.1

- Dogs treated with VETMEDIN survive† virtually twice as long as the dogs
treated with an ACE inhibitor.
- VETMEDIN was well tolerated with few adverse events.
“This study offers the most compelling evidence to date demonstrating the
beneficial effect of pimobendan when compared with benazepril for extending
survival in dogs with CHF caused by MMVD when used in conjunction with other
standard therapy.”
— Häggström et al, 20081
QUEST study design
QUEST was the largest independent global efficacy trial in canine cardiology history.
This trial included 260 client-owned dogs representing 31 breeds. The dogs were
recruited at 28 different veterinary centers in 11 countries on 3 continents. Thirty-two leading cardiologists served as investigators.
Hear an investigator’s perspective on the scope of the QUEST trial.
Study parameters were designed to yield robust data. To accomplish this scientific
rigor, QUEST was set up as a 3-year, randomized, single-blind, positive-controlled,
multicenter, international clinical trial.
Both treatments appeared to be well tolerated with few adverse events
Observed adverse events in both the VETMEDIN (n=18) and ACE inhibitor (n=17)
groups were very similar. Gastrointestinal disorders were most common (n=6 and 4, respectively), followed by abnormal behavior, such as lethargy, confusion, or uneasiness (n=3 and 4, respectively).
The most common side effects reported in field studies were poor appetite, lethargy, diarrhea, dyspnea, azotemia, weakness, and ataxia. If side effects should occur, pet owners should contact their veterinarian.
For complete information about this groundbreaking VETMEDIN efficacy trial, visit
the QUEST website at www.questtrial.com.
* Clinical studies were completed using VETMEDIN Capsules. In the US, only the chewable
tablets are licensed. Both the capsules and chewable tablets contain the same pharmaceutical
ingredient, pimobendan, and are considered equivalent for clinical use. Bioequivalence, however,
has not been shown.
† Survival was defined as the composite endpoint of cardiac death, euthanasia due to heart
failure, or treatment failure. All dogs received furosemide therapy.
Important safety information
VETMEDIN should not be given in case of hypertrophic cardiomyopathy, aortic stenosis, or any other clinical condition where an augmentation of cardiac output is inappropriate for functional or anatomical reasons.
The safety of VETMEDIN has not been established in dogs with asymptomatic heart disease or in heart failure caused by etiologies other than atrioventricular valvular insufficiency or dilated cardiomyopathy. The safe use of VETMEDIN has not been evaluated in dogs younger than 6 months of age, dogs with congenital heart defects, dogs with diabetes mellitus or other serious metabolic diseases, dogs used for breeding, or pregnant or lactating bitches. Use only in dogs with clinical evidence of heart failure.
Reference:
1. Häggström J, Boswood A, O’Grady M, et al. Effect of pimobendan or benazepril hydrochloride on survival times in dogs with congestive heart failure caused by naturally occurring myxomatous mitral valve disease: the QUEST study. J Vet Intern Med. 2008;22(5):1124–1135.