"Propranolol from Inderal capsules is almost completely absorbed from the gastrointestinal tract. Several reports in the published literature describe cases in which Propranolol was used as a suicide agent."
"Propranolol is a competitive antagonist which specifically competes with beta-adrenergic receptor stimulating agents for available beta-receptor sites. Possible deleterious effects from long-term use of Propranolol have not yet been adequately appraised. Propranolol from Inderal tablets is rapidly and completely absorbed from the gastrointestinal tract."