| Section No. | Description |
|---|---|
| Section 331.1 | Antacid active ingredients |
| Section 331.10 | Listing of specific active ingredients |
| Section 331.11 | Combination with nonantacid active ingredients |
| Section 331.15 | Determination of percent contribution of active ingredients |
| Section 331.20 | Test modifications |
| Section 331.21 | Labeling of antacid products |
| Section 331.30 | Professional labeling |
| Section 331.80 | Scope |