Drug
Acetaminophen, Chlorpheniramine Maleate, And Dextromethorphan Hydrobromide
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 | Product Packaging Issue | 38 | 45.1 | 46.0 | signal |
| 2 | Drug Administration Error | 64 | 22.6 | 23.4 | signal |
| 3 | Expired Product Administered | 59 | 19.5 | 20.1 | signal |
| 4 | Extra Dose Administered | 57 | 15.7 | 16.1 | signal |
| 5 | Accidental Overdose | 39 | 11.7 | 11.9 | signal |
| 6 | Acute Hepatic Failure | 13 | 10.5 | 10.6 | signal |
| 7 | Product Physical Issue | 19 | 10.5 | 10.6 | signal |
| 8 | Retching | 20 | 10.3 | 10.4 | signal |
| 9 | Psychomotor Hyperactivity | 14 | 9.2 | 9.3 | signal |
| 10 | Drug Prescribing Error | 16 | 9.0 | 9.1 | signal |
| 11 | Product Taste Abnormal | 11 | 9.0 | 9.0 | signal |
| 12 | Ear Infection | 21 | 8.7 | 8.8 | signal |
| 13 | Therapeutic Response Unexpected | 32 | 7.8 | 7.9 | signal |
| 14 | Accidental Exposure To Product | 71 | 7.8 | 8.1 | signal |
| 15 | Hypersomnia | 20 | 7.7 | 7.7 | signal |
| 16 | Hypothermia | 7 | 7.6 | 7.6 | signal |
| 17 | Gastroenteritis Viral | 12 | 7.3 | 7.3 | signal |
| 18 | Wrong Technique In Product Usage Process | 125 | 6.8 | 7.2 | signal |
| 19 | Product Odour Abnormal | 6 | 6.3 | 6.4 | signal |
| 20 | Product Use Issue | 107 | 6.3 | 6.6 | signal |
| 21 | Incorrect Dose Administered | 123 | 6.0 | 6.3 | signal |
| 22 | Coagulopathy | 8 | 5.3 | 5.3 | signal |
| 23 | Weight Fluctuation | 5 | 5.3 | 5.3 | signal |
| 24 | Crying | 17 | 5.1 | 5.2 | signal |
| 25 | Pharyngitis Streptococcal | 5 | 5.1 | 5.1 | signal |
| 26 | Abnormal Behaviour | 18 | 5.0 | 5.0 | signal |
| 27 | Inappropriate Schedule Of Drug Administration | 32 | 4.9 | 4.9 | signal |
| 28 | Laceration | 4 | 4.6 | 4.6 | signal |
| 29 | Therapy Change | 4 | 4.6 | 4.6 | signal |
| 30 | Drug Effect Incomplete | 15 | 4.5 | 4.5 | signal |
| 31 | Product Use Complaint | 6 | 4.2 | 4.3 | signal |
| 32 | Cyanosis | 6 | 4.2 | 4.2 | signal |
| 33 | Increased Appetite | 7 | 4.1 | 4.1 | signal |
| 34 | Intentional Product Misuse | 31 | 3.9 | 4.0 | signal |
| 35 | Product Quality Issue | 48 | 3.9 | 4.0 | signal |
| 36 | Apathy | 5 | 3.8 | 3.8 | signal |
| 37 | Syringe Issue | 6 | 3.8 | 3.8 | signal |
| 38 | Eructation | 6 | 3.5 | 3.5 | signal |
| 39 | Incorrect Product Storage | 4 | 3.3 | 3.3 | signal |
| 40 | Poor Quality Product Administered | 3 | 3.2 | 3.2 | no signal |
| 41 | Mood Swings | 8 | 2.8 | 2.8 | signal |
| 42 | Drug Dispensing Error | 3 | 2.1 | 2.1 | no signal |
| 43 | Device Leakage | 5 | 1.3 | 1.3 | no signal |
| 44 | Dermatitis Atopic | 5 | 1.1 | 1.1 | no signal |