Figure 1From: Survey of methadone-drug interactions among patients of methadone maintenance treatment program in TaiwanPrevalence of identified methadone-drug interactions (MDIs). Of the 178 participants, 48% (85/178) had at least one MDI event. A total of 112 MDI events were classified as level 1, which indicated that drugs should not be coadministered with methadone, as they may lead to serious adverse reactions or precipitate opioid withdrawal.Back to article page