Yes, Hermit, it is L-Arginine in combination with ornithine. (250mg ornithine and 500mg arginine per capsule). Thanks for the feedback, because I did by the bottle of the combo today, and can return it without a problem.
Unless someone writes and says definitely search out the ornithine on its own tomorrow (after 2pm, and before 6pm!), I'll go ahead and use my melatonin.
Thank you again for sharing your wisdom, everyone.