---
kind: "section"
citation: "21 C.F.R. § 520.136"
title: "21"
number: "520.136"
heading: "Atinvicitinib tablets."
url: "https://uscodex.org/cfr/21/520.136"
---

# §520.136. Atinvicitinib tablets.

- (a) **Specifications.** Each tablet contains 4.8, 7.2, 21.6, or 31.6 milligrams (mg) of atinvicitinib.
- (b) **Sponsor.** See No. 000061 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use—**
  - (1) **Amount.** Administer 0.36 to 0.54 mg atinvicitinib per pound (0.8 to 1.2 mg atinvicitinib per kilogram) of body weight, once daily, with food.
  - (2) **Indications for use.** For the control of pruritus associated with allergic dermatitis in dogs 6 months of age and older.
  - (3) **Limitations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[91 FR 41559, July 7, 2026]

### Authority

Authority: 21 U.S.C. 360b.

### Source

Source: 40 FR 13838, Mar. 27, 1975, unless otherwise noted.

### Amendments

[91 FR 41559, July 7, 2026]