CYP2B6 Genetics and Drug Interactions in Healthy Volunteers

"The study has 4 phases:~Phase 1 (control)-Subjects will receive simultaneously a single dose of bupropion 100 mg, montelukast 10 mg and rosuvastatin 5 mg (cocktail) by mouth (control).~Phase 2 (inhibition)- a single 600 mg oral dose of efavirenz (blood draw at 30 min and 1 hour) will be administered with the cocktail drugs.~Phase 3 (home treatment with efavirenz): Subjects will take efavirenz at home (600 mg/day for 17 days).~Phase 4 (Induction) - is the same as phase 2. Blood samples (0 to 120 hrs) and urine voided over 48 hrs (Phases 1, 2 and 4) are collected. Blood draws will be made in phase 3 for trough concentration measurements."

"The study has 4 phases:~Phase 1 (control)-Subjects will receive simultaneously a single dose of bupropion 100 mg, montelukast 10 mg and rosuvastatin 5 mg (cocktail) by mouth (control).~Phase 2 (inhibition)- a single 600 mg oral dose of efavirenz (blood draw at 30 min and 1 hour) will be administered with the cocktail drugs.~Phase 3 (home treatment with efavirenz): Subjects will take efavirenz at home (600 mg/day for 17 days).~Phase 4 (Induction) - is the same as phase 2. Blood samples (0 to 120 hrs) and urine voided over 48 hrs (Phases 1, 2 and 4) are collected. Blood draws will be made in phase 3 for trough concentration measurements."

"The study has 4 phases:~Phase 1 (control)-Subjects will receive simultaneously a single dose of bupropion 100 mg, montelukast 10 mg and rosuvastatin 5 mg (cocktail) by mouth (control).~Phase 2 (inhibition)- a single 600 mg oral dose of efavirenz (blood draw at 30 min and 1 hour) will be administered with the cocktail drugs.~Phase 3 (home treatment with efavirenz): Subjects will take efavirenz at home (600 mg/day for 17 days).~Phase 4 (Induction) - is the same as phase 2. Blood samples (0 to 120 hrs) and urine voided over 48 hrs (Phases 1, 2 and 4) are collected. Blood draws will be made in phase 3 for trough concentration measurements."

"The study has 4 phases:~Phase 1 (control)-Subjects will receive simultaneously a single dose of bupropion 100 mg, montelukast 10 mg and rosuvastatin 5 mg (cocktail) by mouth (control).~Phase 2 (inhibition)- a single 600 mg oral dose of efavirenz (blood draw at 30 min and 1 hour) will be administered with the cocktail drugs.~Phase 3 (home treatment with efavirenz): Subjects will take efavirenz at home (600 mg/day for 17 days).~Phase 4 (Induction) - is the same as phase 2. Blood samples (0 to 120 hrs) and urine voided over 48 hrs (Phases 1, 2 and 4) are collected. Blood draws will be made in phase 3 for trough concentration measurements."