Sedation (usually transient), headache, asthenia or weakness. CNS, CVS, hepatic effects, GI disturbances, allergic, hematologic & dermatologic reactions. Nasal stuffiness, rise in BUN, breast enlargement, gynecomastia, lactation, hyperprolactinemia, amenorrhea, impotence, decreased libido, mild arthralgia, joint swelling, myalgia.