. Author manuscript; available in PMC: 2010 Feb 17.

Published in final edited form as: Psychopharmacology (Berl). 2009 Aug 13;207(1):99. doi: 10.1007/s00213-009-1637-x

Table 1.

ED₅₀ values for cocaine alone (Coc) and cocaine mixed with various doses of nicotine (Nic 12, 25 and 50 μg/kg/inj) in individual monkeys (upper section) and as means for all monkeys tested for the noted conditions (lower section). Numbers in parentheses represent S.E.M.

	ED50 (μg/kg)
Subject	Coc	Coc/Nic 12	Coc Nic 25	Coc Nic 50
CK6R	64	33	32	34
R0697	77	50	75	61
R02050	165	104	174	125
M1338	124	83	95	72
R01025	53		77	51

N = 4	108 (23)	68 (16)^*	94 (30)	73 (19)^*
N = 5	97 (21)		91 (23)	69 (15)^*

= significant difference from cocaine ED₅₀.