Marquis® Antiprotozoal Oral Paste — veterinary medication

Overview

Source: Animal Drugs @ FDA

Proprietary name

Marquis® Antiprotozoal Oral Paste

Active ingredient

Ponazuril

Application type

NADA

Sponsor

Boehringer lngelheim Animal Health USA, Inc.

Applications on record

1

First published

June 1, 2016

Adverse event reports

Source: openFDA VeDDRA

414

Reports mentioning this ingredient

September 17, 2001 – March 20, 2026

135

Classified serious

per reporter assessment

80

Lack of expected efficacy

resistance signal

4

Human operator exposure

needle-stick or splash

Not a risk measure. Veterinary adverse event reports are influenced by how many animals are treated, reporting practice and product age. Reports do not establish that the product caused the event, and a single report can cover an entire herd or flock. Attribution here is by active ingredient because the source dataset redacts brand names.

Attributed by active ingredient “PONAZURIL”. Green Book ingredient names and VeDDRA ingredient names do not always agree exactly, so attribution is approximate and labelled as such.

Reported reactions

Source: openFDA VeDDRA

Clinical signs coded in the VICH VeDDRA four-level hierarchy, most frequent first.

Reaction terms reported for this ingredient, by report count.
Reaction (VeDDRA term)	Reports	Relative frequency
Lack of efficacy (protozoa) - NOS	38
Uncoded sign	32
Ataxia	25
Anorexia	22
Death by euthanasia	22
Death	21
Diarrhoea	15
Underfilling, Package	15
Dispenser, Abnormal	14
Underfilling, Tubes	13
Neurological signs NOS	13
Behavioural disorder NOS	12
Fever	11
Tubes, Leaking	11
Lethargy (see also Central nervous system depression in 'Neurological')	10
Other abnormal test result NOS	10
Product Defect, General	9
Hind limb ataxia	9
Lack of efficacy - NOS	9
Product syringe missing	9

Species affected

Source: openFDA VeDDRA

Horse 173 Dog 70 Cat 39 Human 6 Ferret 2 Pig 2 Macaw 1 Cattle 1

Regulatory context

New Animal Drug Application (NADA). A pioneer approval evaluated for target animal safety, therapeutic effectiveness, manufacturing controls and — for food-producing species — human food safety including residue depletion.

Extra-label use in food-producing animals is governed by the Animal Medicinal Drug Use Clarification Act of 1994 (AMDUCA) and 21 CFR Part 530. It requires a valid veterinarian-client-patient relationship and is prohibited outright for certain drug classes. Withdrawal times are determined by FARAD, not by this index.

Sources for this page

Animal Drugs @ FDA	FDA CVM	Applications, sponsor, status, withdrawal
Animal & Veterinary Events	FDA CVM	VeDDRA adverse event aggregates by active ingredient