Effects of Psyllium on Niacin Tolerability

Inclusion Criteria: * Patients who are starting ER niacin for clinical indication by a healthcare provider * No prior use of psyllium for the past 2 months * No prior use of niacin for the past 3 months * Ability to give informed consent * Must be reachable by telephone Exclusion Criteria: * Known contraindications to ER niacin, aspirin or psyllium (including: presence of nausea, vomiting, abdominal pain, intestinal obstruction, or fecal impaction; known hypersensitivity to ER niacin, aspirin or psyllium; severe hepatic dysfunction, transaminitis; history of gastrointestinal bleed attributable to aspirin induced gastritis) * Patient who are unable to perform assessment of flushing using the standardized scales or questionnaires * Patients who are pregnant