A Study to Characterize the Abuse Liability of ALO-02 in Healthy, Non-Dependent, Recreational Opioid Users When ALO-02 Capsules Are Crushed and Snorted

A Randomized, Double-blind, Placebo Controlled, Single-dose, 4-way Crossover Study To Determine The Relative Abuse Potential Of Alo-02 (Oxycodone Hydrochloride And Naltrexone Hydrochloride Extended Release Capsules) Compared To Oxycodone Immediate Release, And Placebo When Administered Intranasally To Non-dependent, Recreational Opioid Users.

The main purpose of this study is to determine if oxycodone and naltrexone combination capsules (ALO-02) have the potential to be abused when they are crushed and snorted.

Abuse Liability Study

Inclusion Criteria:

• Healthy subjects
• Non-dependent, recreational opioid users. (Must use opioid for non-therapeutic purposes on at least 10 occassions within the last year and at least once in the 8 weeks before Visit 1 (Screening Visit).
• Must have experience with intranasal opioid administration (snorted opioid drugs on at least 3 occassions within the last year before Visit 1 (Screening Visit).

Exclusion Criteria:

• Diagnosis of substance and/or alcohol dependence
• Subject has participated in, is currently participating in, or seeking treatment for substance and/or alcohol related disorder.