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Table 2 Characteristics of exposures involving gabapentin or pregabalin as the primary substance reported to the national poison data system by bubstance, 2012–2022

From: Gabapentin and pregabalin exposures reported to United States poison centers, 2012–2022

Characteristics

Substance

Gabapentin

n (%)a

Pregabalin

n (%)a

Total

n (%)a

Sex

   

Male

43,525 (41.0)

6,741 (38.6)

50,266 (40.6)

Female

62,731 (59.0)

10,720 (61.4)

73,451 (59.4)

Unknown

383

61

444

Age group

   

≤5 years

12,750 (12.5)

2,829 (16.9)

15,579 (13.1)

6-19 years

8,892 (8.7)

1,264 (7.5)

10,156 (18.5)

20-29 years

14,038 (13.7)

1,560 (9.3)

15,598 (13.1)

30-39 years

17,385 (17.0)

2,366 (14.1)

19,751 (16.6)

40-49 years

16,322 (16.0)

2,700 (16.1)

19,022 (16.0)

50-59 years

15,340 (15.0)

2,766 (16.5)

18,106 (15.2)

≥60 years

17,411 (17.1)

3,277 (19.6)

20,688 (17.4)

Unknown

4,501

760

5,261

Type of exposure

   

Single-substance

66,819 (62.7)

11,409 (65.1)

77,228 (63.0)

Multiple-substance

39,820 (37.3)

6,113 (34.9)

45,933 (37.0)

Reason for exposure

   

Unintentional

39,480 (37.6)

7,493 (43.5)

46,973 (38.5)

 Unintentional–general

15,136 (14.4)

3,161 (18.4)

18,297 (15.0)

 Unintentional–therapeutic error

23,527 (22.4)

4,183 (24.3)

27,710 (22.7)

 Unintentional–otherb

642 (0.6)

107 (0.6)

749 (0.6)

 Unintentional–unknown

175 (0.2)

42 (0.2)

217 (0.2)

Intentional

62,498 (59.6)

8,953 (52.1)

70,451 (58.5)

 Intentional–suspected suicide

48,701 (46.4)

6,504 (37.8)

54,205 (45.2)

 Intentional–misuse

5,617 (5.4)

1,019 (5.9)

6,636 (5.4)

 Intentional–abuse

4,848 (4.6)

852 (5.0)

5,700 (4.7)

 Intentional–unknown

3,332 (3.2)

578 (3.4)

3,910 (3.2)

Otherc

2,939 (2.8)

753 (4.4)

3,692 (3.0)

Unknown

1,722

323

2,045

Management site

   

Managed on site (not in a healthcare facility)

32,887 (31.1)

5,719 (32.9)

38,606 (31.3)

Individual already in (en route to) a healthcare facility

63,709 (60.2)

10,004 (57.5)

73,713 (59.8)

Individual referred by poison center to a healthcare facility

8,466 (8.0)

1,512 (8.7)

9,978 (8.1)

Other

822 (0.8)

151 (0.9)

973 (0.8)

Unknown

755

136

891

Highest level of health care received

   

No healthcare facility treatment receivedd

33,709 (33.9)

5,870 (35.8)

39,579 (34.1)

Treated/evaluated and released

24,916 (25.0)

4,130 (25.2)

29,046 (25.0)

Admitted

38,954 (39.1)

6,033 (36.7)

44,967 (38.7)

 Admitted to a critical care unit

11,242 (11.3)

2,245 (13.7)

13,487 (11.6)

 Admitted to a non-critical care unit

9,129 (9.2)

1,583 (9.6)

10,712 (9.2)

 Admitted to a psychiatric facility

18,583 (18.6)

2,205 (13.4)

20,768 (17.9)

Refused referral/did not arrive at healthcare facility

1,996 (2.0)

381 (2.3)

2,377 (2.0)

Unknowne

7,084

1,108

8,192

Medical outcome

   

No effect

23,874 (23.8)

3,683 (22.4)

27,557 (23.6)

Minor effect

27,631 (27.6)

4,306 (26.2)

31,937 (27.4)

Serious medical outcome

21,505 (21.4)

4,154 (25.2)

25,659 (22.0)

Moderate effect

17,964 (17.9)

3,425 (20.8)

21,389 (18.3)

Major effect

3,452 (3.4)

722 (4.4)

4,174 (3.6)

Death

89 (0.1)

7 (0.0)

96 (0.1)

Not followedf

27,135 (27.1)

4,285 (26.1)

31,420 (26.9)

Unknowng

6,494

1,094

7,588

Total (row %)

106,639 (85.9)

17,522 (14.1)

124,161 (100.0)

  1. aColumn percentages may not add to 100.0% due to rounding error
  2. bIncludes unintentional-environmental, unintentional-occupational, and unintentional-misuse
  3. cIncludes other-contamination/tampering, other-malicious, other-withdrawal, adverse reaction-drug or other
  4. dIncludes cases for which management site was recorded “managed on site (not in a healthcare facility)” or “other”
  5. eIncludes patient lost to follow-up/ left against medical advice/ unknown
  6. fIncludes “not followed (minimal clinical effects possible)” and “not followed (judged as a non-toxic exposure)”
  7. gIncludes “unable to follow (judged as a potentially toxic exposure)”