Cosequin DS Maximum Strength Chewable Tablets The recommended initial administration period is four to six weeks; however, some dogs may respond sooner. The number of chewable tablets may then be reduced to the maintenance level.
From the WebMD Archives. Feb. 3, 2004 -- Low testosterone levels may cause clinical depression in older men, a new study shows. Age related decreases in the male sex hormone testosterone are common in older men; some 30% of men over age 55 have it. Low levels of the hormone can cause symptoms of fatigue, a decreased sex drive, and irritability.
1 If loss of sex drive is related to stress or depression, psychotherapy alone or in combination with antidepressant medication may help.  Some medical conditions, such as obstructive sleep apnea, can cause an unusually low testosterone level, and treatment can return your testosterone level and sex drive to normal.