Federal regulations · Through 2026-08-25 · Newer source version available

21 CFR 520.1422: Metoserpate hydrochloride.

(a) Chemical name. Methyl-o-methyl-18-epireserpate hydrochloride.
(b) Sponsor. See No. 054771 in § 510.600(c) of this chapter.
(c) Related tolerances. See § 556.410 of this chapter.
(d) Conditions of use. It is used in drinking water for replacement chickens as follows:
(1) Amount. 568.5 milligrams per gallon (0.015 percent).
(i) Indications for use. As a tranquilizer for flock treatment of chickens prior to handling.
(ii) Limitations. To be used one time as a treatment for replacement chickens up to 16 weeks of age; usual drinking water should be withheld prior to treatment to provide adequate consumption of medicated drinking water; not for use in laying chickens; chickens slaughtered within 72 hours following treatment must not be used for food.
(2) Amount. 2 to 4 milligrams per 2.2 pounds of body weight.
(i) Indications for use. As an aid in control of hysteria.
(ii) Limitations. To be used as a treatment for replacement chickens up to 16 weeks of age; usual drinking water should be withheld prior to treatment to provide adequate consumption of medicated drinking water; the drug should be administered at a dosage level of 4 milligrams per 2.2 pounds of body weight followed by 2 treatments at 4-day intervals of 2 milligrams per 2.2 pounds of body weight; not for use in laying chickens; chickens slaughtered within 72 hours following treatment must not be used for food.

Where this section sits in the code

Title 21—Food and Drugs
CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES
SUBCHAPTER E—ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS
PART 520—ORAL DOSAGE FORM NEW ANIMAL DRUGS

(a) Chemical name. Methyl-o-methyl-18-epireserpate hydrochloride.

(b) Sponsor. See No. 054771 in § 510.600(c) of this chapter.

(d) Conditions of use. It is used in drinking water for replacement chickens as follows:

(1) Amount. 568.5 milligrams per gallon (0.015 percent).

(i) Indications for use. As a tranquilizer for flock treatment of chickens prior to handling.

(ii) Limitations. To be used one time as a treatment for replacement chickens up to 16 weeks of age; usual drinking water should be withheld prior to treatment to provide adequate consumption of medicated drinking water; not for use in laying chickens; chickens slaughtered within 72 hours following treatment must not be used for food.

(2) Amount. 2 to 4 milligrams per 2.2 pounds of body weight.

(i) Indications for use. As an aid in control of hysteria.

(ii) Limitations. To be used as a treatment for replacement chickens up to 16 weeks of age; usual drinking water should be withheld prior to treatment to provide adequate consumption of medicated drinking water; the drug should be administered at a dosage level of 4 milligrams per 2.2 pounds of body weight followed by 2 treatments at 4-day intervals of 2 milligrams per 2.2 pounds of body weight; not for use in laying chickens; chickens slaughtered within 72 hours following treatment must not be used for food.

Collected 2026-08-27T02:24:47Z. Source file · JSON

Browse this collection