A patient drinks his doses of methadone at the Taipas rehabilitation clinic in Lisbon August 10, 2012. Lisbon's Taipas rehabilitation clinic is one of over 40 such clinics across the country, the result of Portugal's 11-year-old pioneering drugs policy which decriminalised drug use while offering free treatment and state-funded street-work programmes. Picture taken August 10. To match Feature PORTUGAL DRUGS/ REUTERS/Rafael Marchante (PORTUGAL - Tags: DRUGS SOCIETY)