Table 2.

Urine excretion of atenolol

Subject Code	Day	Dose administered	Atenolol excretion	Total atenolol excretion (mg)		% atenolol excretion over	Rate of atenolol excretion
		(mg)	(µg/mL)	5 (h) 510 (h)		10 (h)	(mg/h)
	1	50	135.7	4.9	16.2	42.2	4.2
12	2	75	74	3.8	21	33	4.9
	3	100	99.2	3.1	10.4	31.5	6.3
Mean			102.9	3.9	15.8	35.5	5.1
	1	50	253	9.2	18	42.2	5.4
22	2	75	77	14.4	17.2	47.2	6.4
	3	100	607.6	11	41	25	10.4
Mean			312. 5	11.5	25.4	38.1	7.4
	1	50	46.5	8.9	3.5	23	2.3
32	2	75	9.3	2.7	0.5	4.4	0.6
	3	100	13.6	0.6	3.6	4.2	0.8
Mean			23.2	4	2.6	10.4	1.3
	1	50	24.9	10.9	3.2	28	2.8
42	2	75	2.8	0.6	0.7	1.7	0.3
	3	100	16.2	0.3	2.8	3.2	0.6
Mean			14. 6	3.9	2.2	10.9	1.2
	1	50	2.9	0.03	1.5	3.1	0.3
52	2	75	5.3	0.5	0.9	1.9	0.3
	3	100	1.5	0.2	0.4	0.6	0.11
Mean			3.2	0.3	0.9	1.9	0.2