Pet Drug Reports

Drugs by active ingredient › Dichlorophene + Toluene

Drug · combination of 2 active ingredients

Dichlorophene + Toluene: adverse event reports

All products with this ingredient combination · 17 FDA-approved applications in the Green Book

305reports naming this combination, 1987–20080% of all reports · about 8 a year
0reports, 12 months to March 20260 in the 12 months before
0%classed serious, as reportedof 0 reports stating it
17.4%record death or euthanasia, as reported53 reports
63.3%of reports concern cats0.1% of all cat reports

305 adverse event reports in FDA's database list a drug whose active ingredients are recorded as the combination dichlorophene and toluene. The earliest was received in March 1987, the latest in January 2008. The Green Book lists 17 FDA-approved applications with exactly this combination.

openFDA masks the brand and manufacturer in every report, so these figures describe the ingredient combination across all products and cannot be attributed to a brand.

In the 12 months to March 2026, 0 reports named it, and none in the 12 months before. FDA posts reports quarterly with a delay of three to six months, so the newest months are incomplete and usually grow in later releases. Over its whole reporting history that is about 8 reports a year and 0% of all 1,357,245 reports (0.1% of all cat reports). How many animals received it is not published, so a count says nothing about how often a problem occurs per dose.

Reporters most often listed vomiting (41%), ataxia (31.5%) and hypersalivation (19%). A report can list several signs, so shares add to more than 100%; 101 different terms appear across these reports.

63.3% of reports concern cats. Of reports that state seriousness, 0% were classed as serious, and 17.4% of all reports record a death or euthanasia as an outcome, as reported. FDA has not necessarily determined whether any drug played a part.

Monthly reports by species, five years

Dog0 · peak 1
2022202320242025
Cat0 · peak 1
2022202320242025
Horse0 · peak 1
2022202320242025
Other0 · peak 1
2022202320242025

Reports by the month FDA received them. Each panel has its own scale; the peak month is printed at the top right. The newest months are incomplete because FDA posts reports with a delay of three to six months.

Reports by year received

035691987: 719871988: 219881989: 619891990: 919901991: 1319911992: 2219921993: 3619931994: 3119941995: 4819951996: 6919961997: 3219971998: 219981999: 819992000: 1720002001: 220012008: 12008

2008 covers reports received through March 2026 only.

Signs listed in reports

share of dichlorophene + toluene reports listing the termall cat reports

  1. Vomiting41%125
  2. Ataxia[unsteady, uncoordinated movement]31.5%96
  3. Hypersalivation[drooling]19%58
  4. Depression[dull, quiet or withdrawn]18.7%57
  5. Death15.4%47
  6. Anorexia[not eating]9.8%30
  7. Diarrhoea[diarrhea]7.5%23
  8. Trembling6.6%20
  9. Convulsion[seizure]6.2%19
  10. Confusion4.3%13
  11. Malaise[generally unwell]4.3%13
  12. Mydriasis[dilated pupils]4.3%13
  13. Weakness3.3%10
  14. Death by euthanasia[the animal was euthanized]2.6%8
  15. Shaking2.6%8
  16. Dyspnoea[difficulty breathing]2.3%7
  17. Adipsia[not drinking]1.6%5
  18. Fever1.6%5
  19. Unclassifiable adverse event[event that fits no dictionary term]1.6%5
  20. Behavioural disorder NOS[behaviour change, type not specified]1.3%4
  21. Icterus[jaundice (yellowing)]1.3%4
  22. Recumbency[lying down and unable or unwilling to rise]1.3%4

Top 30 of 101 coded terms (VeDDRA, the veterinary reporting dictionary; plain-language gloss in brackets). One report can list several terms. The ticks show how often the same term appears in a wider pool of reports; they describe the reports, and FDA cautions that such figures cannot be used to estimate risk or to compare one product with another. openFDA masks brand and manufacturer names in adverse event records, so the reports counted here cannot be attributed to a particular brand.

Outcomes and report types

Outcome recorded in the report

Recovered/Normal0%0
Recovered with Sequela0%0
Ongoing0%0
Died17.4%53
Euthanized0%0
Outcome Unknown0%0

What kind of report it was

Safety issue100%305
Lack of expected effectiveness0%0
Both safety and lack of expected effectiveness0%0
Manufacturing or product defect0%0
Other0%0

Coloured bar: reports naming dichlorophene + toluene. Grey bar: all 1,357,245 reports in the database. Outcomes are the status at the time of the last report, as stated by the reporter; a report covering several animals can carry more than one outcome. FDA has not necessarily determined whether any drug played a part in any outcome.

Species and breeds in the reports

Species

Cat63.3%193
Dog35.7%109
Human exposure0.7%2
Other0.3%1

Single-breed animals

Breed shares follow how common each breed is. Crossbred animals and reports with no breed stay in the species figure only.

Age, weight and route

Age of the animal

Under 1 year18.7%57
1 to 3 years28.5%87
4 to 7 years11.8%36
8 to 11 years4.6%14
12 years and over1.6%5
Age not given34.8%106

Weight of the animal

Under 5 kg (11 lb)35.7%109
5 to 9.9 kg (11–22 lb)9.5%29
10 to 24.9 kg (22–55 lb)8.5%26
25 to 44.9 kg (55–99 lb)8.9%27
45 kg and over (99 lb+)1%3
Weight not given36.4%111

Route of administration stated in reports: oral (295), topical (1).

In context

MeasureDichlorophene + TolueneAll cat reportsAll reports
Reports305148,0801,357,245
Share of that pool's reports naming this drug—0.1%0%
Classed serious, of reports stating it0%35.6%38.6%
Death or euthanasia recorded, per 1,000 reports173.89563.8
Filed as lack of expected effectiveness (wholly or partly)0%—23%
Top term, share of reportsVomiting 41%12.5%—

This set accounts for 100% of all reports naming toluene, so no separate ingredient column is shown. Shares are of reports, not of animals treated. The number of doses sold is not public, so none of these figures is a rate of occurrence, and differences between columns reflect which animals receive a drug and who reports as much as anything else.

FDA-approved products containing this combination (Green Book)

Reference information, not report statistics. openFDA masks brand and manufacturer names in adverse event records, so the reports counted here cannot be attributed to a particular brand. The list below is the FDA Green Book as of 1 Oct 2026; nothing on this page says which of these products, if any, a report concerned.

Trade nameActive ingredientsSponsorApproved forApplication
VermiplexDichlorophene, TolueneIntervet, Inc.Dogs, CatsNADA 006-691
Anaplex Caps; Canine and Feline Wormer CapsDichlorophene, TolueneCronus Pharma Specialities India Private Ltd.Dogs, CatsNADA 048-010
Difolin No. 1 Capsules; Difolin No. 2.5 Capsules; Difolin No. 25 Capsules; Difolin No. 40 Capsules; Difolin No. 5 CapsulesDichlorophene, TolueneZoetis Inc.Dogs, CatsNADA 095-333
Tri-Plex Worm CapsulesDichlorophene, TolueneIntervet, Inc.Dogs, CatsNADA 102-020
Trivermicide Worm CapsulesDichlorophene, TolueneHappy Jack, Inc.Dogs, CatsNADA 103-953
Worm CapsulesDichlorophene, TolueneFarnam Companies, Inc.Dogs, CatsNADA 107-189
D & T Worm CapsulesDichlorophene, TolueneCronus Pharma Specialities India Private Ltd.Dogs, CatsNADA 126-676
Paracide Capsulesapproval voluntarily withdrawnDichlorophene, TolueneNorden Laboratories, Inc.—NADA 045-628
Zodiac 3 In 1 Worm Capsulesapproval voluntarily withdrawnDichlorophene, TolueneWellmark International—NADA 094-777
Worm Kapsapproval voluntarily withdrawnDichlorophene, TolueneBayer HealthCare LLC, Animal Health Division—NADA 101-078
Tiny Tiger Worming Capsules For Cats; Worming Capsules For Puppies, Small Dogs And Catsapproval voluntarily withdrawnDichlorophene, ToluenePegasus Laboratories, Inc.Dogs, CatsNADA 101-497
L.K. Worming Capsules For Dogsapproval voluntarily withdrawnDichlorophene, ToluenePegasus Laboratories, Inc.DogsNADA 101-498
Gaypet Trivex Worm Capsulesapproval voluntarily withdrawnDichlorophene, TolueneFort Dodge Animal Health, Division of Wyeth, a wholly owned subsidiary of Pfizer, Inc.—NADA 101-715
Pulvex Multipurpose Worm Capsapproval voluntarily withdrawnDichlorophene, TolueneVirbac AH, Inc.Dogs, CatsNADA 102-942
Triex Worm Capsulesapproval voluntarily withdrawnDichlorophene, ToluenePharmacaps, Inc.—NADA 119-844
THR Worm Capsulesapproval voluntarily withdrawnDichlorophene, TolueneNatchez Animal Supply Co.Dogs, CatsNADA 121-557
Dichlorophene / Tolueneapproval voluntarily withdrawnDichlorophene, TolueneIMPAX LaboratoriesDogs, CatsNADA 138-900

Species are the major species the Green Book search lists for the application ("—" where it lists another species or none). Approval dates are not part of the Green Book listing files and are not shown. Pioneer applications (NADA) come first, then generics (ANADA).

Questions about dichlorophene + toluene reports

How many adverse event reports has FDA received for the combination dichlorophene and toluene?

305 reports record a drug with the combination dichlorophene and toluene as its active ingredients in the openFDA release of 28 Sep 2026, covering reports received through March 2026. 0 of them arrived in the latest 12 months.

Which brand do these reports concern?

That cannot be known from the public data. openFDA masks brand and manufacturer names in adverse event records, so the reports counted here cannot be attributed to a particular brand. The Green Book lists 17 approved applications with this combination; the reference list on this page names them without any counts.

What signs are reported most often?

vomiting (41%), ataxia (31.5%), hypersalivation (19%), depression (18.7%) and death (15.4%). These are the coded terms listed in reports; several can appear in one report, and a term's presence is not a finding that the drug was responsible.

Which species and breeds appear in these reports?

cat (63.3%), dog (35.7%) and human exposure (0.7%). Among single-breed animals the most frequent labels are Domestic, Labrador Retriever, Pit Bull and Rottweiler; popular breeds appear often in any drug's reports because there are more of them.

Are reports rising?

0 reports in the 12 months to March 2026, and none in the 12 months before. FDA posts reports quarterly with a delay of three to six months, so the newest months are incomplete and usually grow in later releases. Counts also move with sales, publicity and time on the market.

Do these reports show that dichlorophene + toluene harms pets?

Report counts cannot show that. FDA states that "there is no certainty that the reported drug or device caused the adverse event" and that the event "may have been related to an underlying disease, other drugs used at the same time or other non-drug related sources." FDA also notes that commonly used products may have more reports simply because more animals receive them.

Are these the side effects of dichlorophene + toluene?

They are signs listed in reports, not an established list of side effects. The adverse reactions observed in studies are printed on each product's FDA-approved label, which a veterinarian can go through with you. This page is a record of what was reported to FDA.

How do I report a problem with an animal drug?

FDA asks owners and veterinarians to call the drug company first (the number is on the label); companies must pass reports to FDA. Reports can also go directly to FDA on Form FDA 1932a. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Animal & Veterinary adverse event bulk files released 28 Sep 2026, which hold reports FDA's Center for Veterinary Medicine received through 31 Mar 2026. openFDA masks brand and manufacturer names in these files, so drugs are counted by the active ingredients each record discloses and no figure is attributed to a brand, application or company. Ingredient names, and the separate reference lists of approved products, follow the FDA Green Book as of 1 Oct 2026. Drug entries are grouped by the active ingredients their unmasked ingredient field discloses; the application number that records also carry is not used. No report text, lot numbers or reporter details are published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.