Dr. Cox

Dr. Cox is Thunderbird’s toltrazuril liquid for coccidiosis in poultry.

What Is Actually In It

Dr. Cox contains toltrazuril at a stated concentration of 2.5%, according to Thunderbird’s product page. That is the single active ingredient captured for this product, transcribed exactly as published, with no conversion or rounding applied.

What the Label Says It Is For

Thunderbird’s label states Dr. Cox is “for prevention and treatment of Coccidiosis caused by Eimeria sp. in poultry.” That is the manufacturer’s own indication. Coccidiosis in young birds can present with symptoms that overlap other intestinal conditions, and this page does not diagnose that or any other condition.

Forms It Comes In

Dr. Cox is a water-soluble liquid. Thunderbird’s dosage instructions, quoted in the fact box above, distinguish a prevention mix from a treatment mix and specify a rest period between treatment cycles. Those figures are quoted verbatim from the manufacturer’s page and are not recalculated or adjusted in this text.

Withdrawal Period

Thunderbird does not publish a withdrawal period for Dr. Cox, for meat or eggs. That absence is not evidence of a zero-day withdrawal; it simply means no figure is stated on the page captured for this entry.

What This Page Does Not Tell You

This page reproduces what Thunderbird publishes about Dr. Cox: one confirmed ingredient, a coccidiosis indication, mixing instructions for prevention and treatment, and no published withdrawal period. It does not confirm that a flock’s symptoms are coccidiosis rather than something else requiring different treatment. See the site’s deworming and parasite guide for general background, and take a suspected coccidiosis case to a veterinarian, an agrivet, or the local agriculture office.