Laine, K Effect of delayed administration of activated charcoal on the absorption of conventional and slow-release verapamil. [electronic resource] - Journal of toxicology. Clinical toxicology 1997 - 263-8 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 0731-3810 Standard No.: 10.3109/15563659709001210 doi Subjects--Topical Terms: Administration, OralAdsorptionAdultAntidotes--administration & dosageCalcium Channel Blockers--administration & dosageCharcoal--administration & dosageChromatography, High Pressure LiquidCross-Over StudiesDelayed-Action PreparationsFemaleHumansIntestinal Absorption--drug effectsMaleReference StandardsVerapamil--administration & dosage