FDA pharmacologic class
Aromatic Amino Acid
1 medicine is in FDA's class of aromatic amino acids: levodopa (Inbrija); 2 combination products also contain one. 2 of the 3 are listed from generic labelers (FDA NDC Directory, October 8, 2026). The lowest pharmacy cost is carbidopa-levodopa 25-100 tablet at $0.0759 per tablet (NADAC).
Which medicines are aromatic amino acid?
| Medicine | Brand names | Generic labelers (all forms) | Pharmacy cost | Boxed warning | Shortage | Recalls since 2012 |
|---|---|---|---|---|---|---|
| Carbidopa and levodopa | Rytary, Crexont, Sinemet | 33 labelers | $0.0759 per tablet 25-100 tablet | No | No current entry | 5 |
| Carbidopa and entacapone and levodopa | none listed | 4 labelers | $0.695 per tablet 25-100-200 mg tablet | No | No current entry | 1 |
| Levodopa | Inbrija | none listed | n/a | No | No current entry | 0 |
Source: FDA Established Pharmacologic Class (NDC Directory, openFDA); CMS NADAC of October 7, 2026; FDA shortages and recalls (FDA files October 8, 2026)
What do pharmacies pay?
Each medicine's most widely listed form, per unit, in the NADAC survey: what pharmacies paid, not what a patient pays; strengths differ, so compare like with like.
Source: CMS National Average Drug Acquisition Cost (NADAC) survey, October 7, 2026: what retail pharmacies paid per unit; not a counter price