{"data":{"id":"us/21-cfr-349.10","jurisdiction":"us","citation":"21 CFR 349.10","heading":"Ophthalmic astringent.","body":"The active ingredient and its concentration in the product is as follows: Zinc sulfate, 0.25 percent.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER D—DRUGS FOR HUMAN USE","PART 349—OPHTHALMIC DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE","Subpart B—Active Ingredients"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"e0acdf67fde987d272392b346645ec8aea956a01257c85e8064febd2e44a918d","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-349.3","next":"us/21-cfr-349.12"},"notice":"GroundRules: Original legal text. Not legal advice."}