Table 1.

Patient demographics at baseline^∗

	Group A (n = 11)†	Group B (n = 9)‡	P value
Age (y)	62.69 ± 3.41	55.00 ± 5.75	.24
SHIM-T	7.22 ± 0.92	10.75 ± 2.02	.09
EHS	2.22 ± 1.09	2.50 ± 0.58	.65
AMS-SD	12.78 ± 4.41	14.00 ± 5.60	.68
Duration of ED (y)	4.00 ± 1.41	4.00 ± 2.16	1.00
On-demand PDE5i	T: 7, S: 5, V: 3	T: 3, S: 4, V: 4	–

AMS-SD = Aging Male Symptoms Scale-sexual domain; ED = erectile dysfunction; EHS = Erection Hardness Score; PDE5i = phosphodiesterase type 5 inhibitor; SHIM-T = Sexual Health Inventory for Men total score; S = sildenafil; T = tadalafil; V = vardenafil.

^∗Values are mean ± standard error.

^†Received supplementation first.

^‡Received placebo first.