| Points of Comparison | LNG IUS | Copper IUD |
| Main difference | Hormonal (levonorgestrel) | Nonhormonal |
| Main effects on menstruation | Generally decreasesmenstrual blood loss | Generally increasesmenstrual blood loss |
| Duration of use | 5 years | 10–12 years |
| Noncontraceptive benefits (stemming from reduced uterine bleeding) | Treats menorrhagia, increases hemoglobin, and likely alleviates anemia and problems with uterine fibroids | … |
| Effectiveness | Both in the highest tier of contraceptive effectiveness | |
| Continuation rates | Both have similar, high continuation rates | |
Abbreviations: IUD, intrauterine device; LNG IUS, levonorgestrel intrauterine system.