Table 3.

Prescribed non-steroidal anti-inflammatory drugs and centrally acting agents. (*) means that the drug was discontinued at least 24 hrs before the study. Plasma half-life of each compound is also indicated.

Fibromyalgia			Rheumatoid Arthritis
Drug	Number of patients	Plasma half-life (hours)	Drug	Number of patients	Plasma half-life (hours)
clonazepam	6	20–60	acetaminophen*	4	4–6
acetaminophen*	5	4–6	celecoxib*	3	10–12
mianserin	2	21–61	diclofenac*	3	3–7
alprazolam	2	12–15	piroxicam*	2	34–50
bromazepam	1	20	clonazepam	1	20–60
triazolam	1	1.5–5.5	alprazolam	1	12–15
piroxicam*	1	34–50	indomethacin*	1	4–5
celecoxib*	1	10–12	aspirin*	1	2–3
ketoprofen*	1	1.5–4	rofecoxib*	1	17
fluoxetine	1	96–144	ibuprofen*	1	2–3
gabapentin*	1	5–9	gabapentin*	1	5–9