<p>The wonder drug could be prescribed in time for the nationwide smoking ban from July 1.</p>
<p>Champix — developed by Pfizer which makes anti-impotence drug Viagra — blocks cravings, lessens withdrawal symptoms and even reduces the pleasure from ciggies.</p>
<p>In trials nearly half of smokers — 44 per cent — kicked the habit after a 12-week course as opposed to 30 per cent using other NHS anti-smoking medication.</p>
