What do systematic reviews say?

Longer vs shorter duration of combination nicotine replacement therapy

It is very uncertain whether longer changes overall SAEs ‐ 26 weeks versus 8 weeks compared with shorter duration of combination nicotine replacement therapy (very low certainty).

• Different doses, durations and modes of delivery of nicotine replacement therapy for smoking cessation 2023 · Cochrane Headline outcomes only
  RR 1.63 [0.6, 4.42]
  1 study · 544 participants
  Very low
• Different doses, durations and modes of delivery of nicotine replacement therapy for smoking cessation 2023 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 637 participants
  Very low
• Different doses, durations and modes of delivery of nicotine replacement therapy for smoking cessation 2023 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 987 participants
  Very low