IRCT2016111819554N11.

Methods	Parallel randomized double‐blinded trial
Participants	Men aged 30 to 80 years; sexual dysfunction for at least the six months prior to recruitment; no relationship problems with partner for at least the six months prior to recruitment; Hemoglobin A1c less than 10 & fasting blood sugar less than 200 for at least the six months prior to recruitment; normal serum testosterone and prolactin levels; non‐interference between study drugs with other prescription medications; no history of priapism.
Interventions	Ginseng capsule for 10 weeks Bupropion tablet (150 mg) for 10 weeks Sildenafil tablet (50 mg) for 10 weeks Placebo for 10 weeks
Outcomes	Erectile dysfunctions Hemoglobin A1c Serum cholesterol level Serum prolactin level Serum testosterone level Serum triglyceride level Serum fasting blood sugar level. Timepoint: first day. Method of measurement: laboratory kits (calorimetry enzymatic).
Notes	Available from: www.irct.ir/trial/17480