---
kind: "section"
citation: "21 C.F.R. § 349.10"
title: "21"
number: "349.10"
heading: "Ophthalmic astringent."
url: "https://uscodex.org/cfr/21/349.10"
---

# §349.10. Ophthalmic astringent.


The active ingredient and its concentration in the product is as follows: Zinc sulfate, 0.25 percent.


## Notes

### Authority

Authority: 21 U.S.C. 321, 351, 352, 353, 355, 360, 371.

### Source

Source: 53 FR 7090, Mar. 4, 1988, unless otherwise noted.