Drug
Penciclovir
Important: Reactions below are the flagged terms from this drug’s
FAERS report history (min. 3 co-reports per term) — PRR/ROR indicate
disproportionality in spontaneous reporting, not causation.
Data from FDA FAERS via openFDA. Last recalculated: 2026-09-14.
| Reaction | Co-reports (a) | PRR | ROR | Signal | |
|---|---|---|---|---|---|
| 1 | Oral Herpes | 16 | 48.1 | 50.3 | signal |
| 2 | Economic Problem | 8 | 30.3 | 31.0 | signal |
| 3 | Rotator Cuff Syndrome | 5 | 22.7 | 23.0 | signal |
| 4 | Pharyngitis Streptococcal | 4 | 21.6 | 21.8 | signal |
| 5 | Expired Product Administered | 12 | 21.1 | 21.8 | signal |
| 6 | Spinal Operation | 4 | 19.3 | 19.5 | signal |
| 7 | Inflammatory Bowel Disease | 3 | 17.8 | 18.0 | signal |
| 8 | Application Site Erythema | 3 | 6.7 | 6.7 | signal |