Findings

What do systematic reviews say?

3 questions · 3 findings · 1 reviews · Fertility Regulation

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 3 · 100%High 0 · 0%

Nausea · women seeking emergency contraception

Levonorgestrel probably leads to lower specific side effects ‐ Nausea compared with yuzpe (moderate certainty).

1 finding from 1 review

Interventions for emergency contraception 2019 · Cochrane Headline outcomes only
RR 0.4 [0.36, 0.44]
6 studies · 4750 participants
Moderate

Nausea · women seeking emergency contraception

Single‐dose levonorgestrel showed no clear difference in specific side effects ‐ nausea compared with split‐dose levonorgestrel (moderate certainty).

1 finding from 1 review

Interventions for emergency contraception 2019 · Cochrane Headline outcomes only
RR 0.97 [0.88, 1.07]
3 studies · 6804 participants
Moderate

Nausea · women seeking emergency contraception

Ulipristal acetate (all doses) showed no clear difference in specific side effects ‐ nausea compared with levonorgestrel (moderate certainty).

1 finding from 1 review

Interventions for emergency contraception 2019 · Cochrane Headline outcomes only
RR 1.14 [0.93, 1.41]
2 studies · 3770 participants
Moderate