2011 Annual Report of the American Association of Poison Control Centers’ National Poison Data System (NPDS): 29th Annual Report

Figures & data

Table 17F. Substance categories most frequently identified in drug identification calls (Top 25).

Substance (Major Generic Category)	All substances	%^a
Analgesics	334,449	40.13
Sedative/Hypnotics/Antipsychotics	125,891	15.11
Unknown Drug	53,065	6.37
Muscle Relaxants	47,132	5.66
Antidepressants	39,211	4.71
Cardiovascular Drugs	37,949	4.55
Antihistamines	30,748	3.69
Antimicrobials	26,932	3.23
Invalid/Missing	24,687	2.96
Stimulants and Street Drugs	19,959	2.40
Information Calls	18,197	2.18
Anticonvulsants	17,968	2.16
Hormones and Hormone Antagonists	15,376	1.85
Gastrointestinal Preparations	12,589	1.51
Diuretics	9,280	1.11
Miscellaneous Drugs	6,699	0.80
Cold and Cough Preparations	4,071	0.49
Anticholinergic Drugs	2,112	0.25
Electrolytes and Minerals	1,636	0.20
Vitamins	1,599	0.19
Anticoagulants	912	0.11
Asthma Therapies	668	0.08
Dietary Supplements/Herbals/Homeopathic	464	0.06
Other/Unknown Nondrug Substances	321	0.04
Antineoplastics	313	0.04

^aPercentages are based on the total number of substances reported in all drug identification calls (N = 833,341).

Table 17F. Substance Categories Most Frequently Identified in Drug Identification Calls (Top 25).

Substance (Major Generic Category)	All substances	%^a
Analgesics	254,119	38.98
Sedative/Hypnotics/Antipsychotics	100,632	15.44
Unknown Drug	39,931	6.13
Muscle Relaxants	36,191	5.55
Cardiovascular Drugs	31,540	4.84
Antidepressants	30,577	4.69
Antihistamines	24,817	3.81
Invalid/Missing	21,999	3.37
Antimicrobials	20,237	3.10
Stimulants and Street Drugs	16,751	2.57
Anticonvulsants	14,806	2.27
Information Calls	14,439	2.21
Hormones and Hormone Antagonists	12,374	1.90
Gastrointestinal Preparations	11,232	1.72
Diuretics	7,110	1.09
Miscellaneous Drugs	4,465	0.68
Cold and Cough Preparations	2,981	0.46
Anticholinergic Drugs	1,911	0.29
Electrolytes and Minerals	1,225	0.19
Vitamins	1,201	0.18
Anticoagulants	839	0.13
Asthma Therapies	582	0.09
Dietary Supplements/Herbals/Homeopathic	415	0.06
Other/Unknown Nondrug Substances	266	0.04
Antineoplastics	265	0.04

^aPercentages are based on the total number of substances reported in all drug identification calls (N = 651,881).