Table 2.

Summary of the included studies.

References	Study design	Type	Sample	Acupuncture points	Intervention	Outcome	Effective rate	Adverse event
Engelhardt et al. [18]	RCT	Psychogenic	10	Zhao Hai (KI6), Shu fu (KI27), Guan Yuan (CV4), Qi Hai (CV6), Shen Shu (BL23), Wan Gu (SI4), San Yinjiao (SP6)	AC, 20 min 1–2/week for 5–20 sessions	Self-sexual activity satisfaction IIEF 5	68%	None
Aydin et al. [19]	RCT	Nonorganic	15	Qi Chong (ST30), Zu Sanli (ST36), Zhao Hai (KI6), Guan Yuan (CV4), Qi Hai (CV6)	EA, 20 min 2/week for 6 weeks	Self-sexual activity	60%	None
Kho et al. [20]	UCT	9 psychogenic 4 organic 3 discontinued	16	Guan Yuan (CV4), Bai Hui (GV20), San Yinjiao (SP6), tai Xi (KI3), Shen Men (HT7)	AC + EA, 30 min 2/week for 4 weeks	Self-sexual activity partner's activity satisfaction profiles of hormones	54%	Not mentioned
Yaman et al. [21]	UCT	Psychogenic	29	Ci Liao (BL32), Da Dun (LR1), Yin Lian (LR11), Nei Guan (PC6), tiao Kou (ST38), Qu Gu (CV2), Bai Hui (GV20)	AC, 10–20 min total 10 sessions 3/week for week 1 2/week in the following weeks	Self-sexual activity	69%	Two patients had premature ejaculation

AC: acupuncture, EA: electric acupuncture, UCT: uncontrolled clinical trial, and RCT: randomized controlled trial.