Combinations containing aspirin must meet the standards of an acceptable dissolution test, as set forth in §343.90. The following combinations are permitted: Aspirin identified in §§343.12 and 343.13 may be combined with any antacid ingredient identified in §331.11 of this chapter or any combination of antacids permitted in accordance with §331.10(a) of this chapter provided that the finished product meets the requirements of §331.10 of this chapter and is marketed in a form intended for ingestion as a solution.