# SITAVIG — FDA application NDA203791

Informational only - not investment advice.

Application NDA203791 · type NDA · FDA status: approved · original approval 2013-04-12

Listed sponsor: LIGAND PHARMS · [LGND company profile](/company/LGND/) · exact_unique

Sponsor as listed in Drugs@FDA at retrieval (2026-08-07); FDA sponsor listings can lag ownership transfers.

## FDA application facts

| Product | FDA-listed trade name | Active ingredient | Dosage form | Route | Strength | Marketing status | TE code | RLD |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 001 | SITAVIG | ACYCLOVIR | TABLET | BUCCAL | 50MG | Discontinued | not listed | Yes |

## Orange Book patent and exclusivity listings

- Patent 8791127, product 001; listed patent expiry date: 2027-03-23.
- Patent 8747896, product 001; listed patent expiry date: 2027-06-03.
- Patent 8592434, product 001; listed patent expiry date: 2030-06-16.

Patent and exclusivity dates are regulatory listings from the FDA Orange Book; no relationship to revenue or future sales is stated or implied.

## Compound cross-links

- ACYCLOVIR · UNII not resolved · no lmmol compound match

Ingredient–compound links use FDA openFDA/GSRS identifiers and an exact lmmol InChIKey join. Ingredient names cannot create a link.

## Related pages

- [Sponsor company](/company/LGND/)
- [FDA-approved application index](/drug/)

Sources: https://www.fda.gov/drugs/drug-approvals-and-databases/drugsfda-data-files · https://www.fda.gov/drugs/drug-approvals-and-databases/orange-book-data-files · https://api.fda.gov/drug/drugsfda.json?search=application_number:NDA203791. FDA data retrieved 2026-08-07.

Regulatory listing data as published by FDA; not medical or investment advice.