EVIDENCE SYNTHESIS The most studied combination therapy for the treatment of male LUTS is the α1-adrenoceptor antagonist/5α-reductase inhibitor combination .
This combination seems to be more efficacious in terms of several outcome variables , in particular in men who have moderate-to-severe LUTS and are at risk of disease progression .
Also in terms of nocturia improvements , this combination is significantly more effective than the monotherapy .
The other often studied combination treatment , in both male and female patients with LUTS , was the combination of antimuscarinics ( in particular solifenacin ) and mirabegron .
This combination seems to be more effective in comparison with the monotherapies with respect to urinary incontinence and urgency urinary incontinence episodes and several other objective and subjective parameters , without relevant increase of adverse events .
The combination of hormone therapy and antimuscarinics in women with LUTS does not seem to be useful .
For the treatment of LUTS in men and women , combination therapy appears to be a promising option to optimize the efficacy of the available drugs for those who do not experience sufficient benefit with monotherapy .
This add-on scenario offers the possibility to have a more tailored approach to the management of LUTS , always seeking the optimal balance between efficacy and tolerability for a given patient .
PATIENT SUMMARY Some combination of drugs may offer advantages over monotherapies for the treatment of voiding and storage complaints in men and women
CONTEXT Several drugs are approved and available for the treatment of lower urinary tract symptoms ( LUTS ) in men and women .
However , the vast majority of available data , upon which the approval and recommendation in guidelines are based , considered only the role of the monotherapies and did not evaluate possible combination therapies .
OBJECTIVE This systematic review analyzes the efficacy and adverse events of combination therapies for male and female LUTS .
Effects of estrogen with and without progestin on urinary incontinence.
CONTEXT Menopausal hormone therapy has long been credited with many benefits beyond the indications of relieving hot flashes , night sweats , and vaginal dryness , and it is often prescribed to treat urinary incontinence ( UI ) . OBJECTIVE To assess the effects of menopausal hormone therapy on the incidence and severity of symptoms of stress , urge , and mixed UI in healthy postmenopausal women . DESIGN , SETTING , AND PARTICIPANTS Women 's Health Initiative multicenter double-blind , placebo-controlled , r and omized clinical trials of menopausal hormone therapy in 27,347 postmenopausal women aged 50 to 79 years enrolled between 1993 and 1998 , for whom UI symptoms were known in 23,296 participants at baseline and 1 year . INTERVENTIONS Women were r and omized based on hysterectomy status to active treatment or placebo in either the estrogen plus progestin ( E + P ) or estrogen alone trials . The E + P hormones were 0.625 mg/d of conjugated equine estrogen plus 2.5 mg/d of medroxyprogesterone acetate ( CEE + MPA ) ; estrogen alone consisted of 0.625 mg/d of conjugated equine estrogen ( CEE ) . There were 8506 participants who received CEE + MPA ( 8102 who received placebo ) and 5310 who received  CEE alone ( 5429 who received placebo ) . MAIN OUTCOME MEASURES Incident UI at 1 year among women without UI at baseline and severity of UI at 1 year among women who had UI at baseline . RESULTS Menopausal hormone therapy increased the incidence of all types of UI at 1 year among women who were continent at baseline . The risk was highest for stress UI ( CEE + MPA : relative risk [ RR ] , 1.87 [ 95 % confidence interval { CI } , 1.61 - 2.18 ] ; CEE alone : RR , 2.15 [ 95 % CI , 1.77 - 2.62 ] ) , followed by mixed UI ( CEE + MPA : RR , 1.49 [ 95 % CI , 1.10 - 2.01 ] ; CEE alone : RR , 1.79 [ 95 % CI , 1.26 - 2.53 ] ) . The combination of CEE + MPA had no significant effect on developing urge UI ( RR , 1.15 ; 95 % CI , 0.99 - 1.34 ) , but CEE alone increased the risk ( RR , 1.32 ; 95 % CI , 1.10 - 1.58 ) . Among women experiencing UI at baseline , frequency worsened in both trials ( CEE + MPA : RR , 1.38 [ 95 % CI , 1.28 - 1.49 ] ; CEE alone : RR , 1.47 [ 95 % CI , 1.35 - 1.61 ] ) . Amount of UI worsened at 1 year in both trials ( CEE + MPA : RR , 1.20 [ 95 % CI , 1.06 - 1.36 ] ; CEE alone : RR , 1.59 [ 95 % CI , 1.39 - 1.82 ] ) . Women receiving menopausal hormone therapy  were more likely to report that UI limited their daily activities ( CEE + MPA : RR , 1.18 [ 95 % CI , 1.06 - 1.32 ] ; CEE alone : RR , 1.29 [ 95 % CI , 1.15 - 1.45 ] ) and bothered or disturbed them ( CEE + MPA : RR , 1.22 [ 95 % CI , 1.13 - 1.32 ] ; CEE alone : RR , 1.50 [ 95 % CI , 1.37 - 1.65 ] ) at 1 year . CONCLUSIONS Conjugated equine estrogen alone and CEE + MPA increased the risk of UI  among continent women and worsened the characteristics of UI among symptomatic women after 1 year . Conjugated equine estrogen with or without progestin should not be prescribed for the prevention or relief of UI
EVIDENCE SYNTHESIS The most studied combination therapy for the treatment of male LUTS is the α1-adrenoceptor antagonist/5α-reductase inhibitor combination .
This combination seems to be more efficacious in terms of several outcome variables , in particular in men who have moderate-to-severe LUTS and are at risk of disease progression .
Also in terms of nocturia improvements , this combination is significantly more effective than the monotherapy .
The other often studied combination treatment , in both male and female patients with LUTS , was the combination of antimuscarinics ( in particular solifenacin ) and mirabegron .
This combination seems to be more effective in comparison with the monotherapies with respect to urinary incontinence and urgency urinary incontinence episodes and several other objective and subjective parameters , without relevant increase of adverse events .
The combination of hormone therapy and antimuscarinics in women with LUTS does not seem to be useful .
For the treatment of LUTS in men and women , combination therapy appears to be a promising option to optimize the efficacy of the available drugs for those who do not experience sufficient benefit with monotherapy .
This add-on scenario offers the possibility to have a more tailored approach to the management of LUTS , always seeking the optimal balance between efficacy and tolerability for a given patient .
PATIENT SUMMARY Some combination of drugs may offer advantages over monotherapies for the treatment of voiding and storage complaints in men and women
CONTEXT Several drugs are approved and available for the treatment of lower urinary tract symptoms ( LUTS ) in men and women .
However , the vast majority of available data , upon which the approval and recommendation in guidelines are based , considered only the role of the monotherapies and did not evaluate possible combination therapies .
OBJECTIVE This systematic review analyzes the efficacy and adverse events of combination therapies for male and female LUTS .