Babor Last reviewed 11th August 2025 Last updated 23 June 2026 Editorial policy References Brown & Burk UK, 2024, Varenicline 1 mg film-coated tablets: Summary of Product Characteristics, accessed 16 July 2025 Bonteque Consulting, 2024, Cytisine 1.5 mg tablets: Summary of Product Characteristics, accessed 16 July 2025 NCSCT, Cytisine, accessed 16 July 2025 NICE, 2025, Smoking cessation, accessed 16 July 2025 BNF/NICE, 2025, Smoking cessation, accessed 16 July 2025 questions Choose order Please remember to take the full course as prescribed which is 12 weeks (can be extended to 24 weeks)
If you or loved ones are concerned, don't guess as to the cause
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Use of e-cigarettes may theoretically increase metabolism of neuromuscular blocking drugs, opioids and sedatives, but evidence is lacking and clinical reports of problems seem to be absent