Delsym: adverse event reports filed with FDA

3,579

reports as suspect product

0% of all reports · about 159 a year

144

reports, 12 months to June 2026

118 in the 12 months before

15%

marked serious by the reporter

33.2% across the class

0.3%

record death among outcomes, as reported

10 reports · not verified by FDA

Reports by month, five years

Reports by the month FDA received them. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.

By year received

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Delsym reports recording the termmedian drug in expectorant

1. Drug ineffectivethe medicine did not work as expected32.5%1,164
2. Overdosea dose above the recommended amount11.6%415
3. Accidental overdosean accidental overdose9.1%324
4. Dizzinesslight-headedness or unsteadiness9%322
5. Diarrhoealoose or frequent stools7%250
6. No adverse eventno adverse event was reported6.6%236
7. Somnolencedrowsiness3.9%139
8. Nauseafeeling sick3.8%137
9. Feeling abnormalfeeling odd or not right3.5%125
10. Insomniadifficulty sleeping3.4%123
11. Coughcough3.2%113
12. Vomitingbeing sick2.8%100
13. Headachehead pain2.6%92
14. Accidental exposure to product by child2.3%83
15. Drug abusemisuse of a medicine2.2%79
16. Drug administered to patient of inappropriate age2.2%78
17. Inappropriate schedule of product administrationthe product was taken at the wrong times2.2%77
18. Abdominal pain upperupper stomach pain2%71
19. Hallucinationseeing or hearing things that are not there1.8%66
20. Inappropriate schedule of drug administrationthe medicine was taken at the wrong times1.8%63
21. Condition aggravatedthe condition being treated got worse1.5%55
22. Product administered to patient of inappropriate age1.5%53
23. Expired product administeredthe product was used past its expiry date1.4%51
24. Fatiguetiredness1.3%47
25. Confusional stateconfusion1.3%46
26. Incorrect drug administration duration1.3%45
27. Abdominal discomfortstomach discomfort1.2%44
28. Blood pressure increaseda raised blood pressure reading1.2%44
29. Malaisegeneral feeling of being unwell1.2%44
30. Dyspnoeashortness of breath1.2%42

Top 30 of 251 MedDRA preferred terms recorded across these reports, with a plain-language gloss where one is available. One report can record several terms. The hollow bar is the median share across the 10 drugs in the expectorant class; it describes the reports, not the patients. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Outcomes recorded

Outcome flags as the reporter set them; a report can carry several, and "other serious" is FDA's own category for serious reports outside the named outcomes. Grey bar: all 51,345 reports in the class. FDA has not verified any outcome and states that the reports "cannot be used to estimate the incidence of these events."

Patients and reporters

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 99.5% of reports give the United States as the country of the event or reporter.

Reason for use recorded

The indication field is filled in by the reporter and is often blank; shares are of all 3,579 reports.

Drugs most often listed in the same reports

Other products listed in reports where Delsym is a suspect product, whatever their own role. Co-listing means the two were recorded together; it says nothing about either product's part in the event. Only the 2,500 most-reported names are counted here.

In context

Shares are of reports, not of patients treated. The number of people taking a product is not in the data, so none of these figures is a rate, and differences between columns reflect who takes a product, who reports and how long it has been sold. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Other drugs in the expectorant class

Ordered by report count for navigation only. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic." A brand and its generic are separate rows because reporters name them separately.

Where this comes from. Counts are built from the openFDA Drug Adverse Event (FAERS) bulk export released 28 Sep 2026, which holds reports FDA received through 30 Jun 2026. Drug names are as reported, resolved to the brand or generic name on the FDA label where openFDA's harmonisation matched them; classes are the pharmacologic class (EPC) from the label and the National Drug Code Directory of 17 Sep 2026. A report counts here when it lists Delsym as a suspect or interacting product; reports listing it only as a concomitant medication (740) are excluded. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.