The effectiveness of a slow-release pentaerythritol tetranitrate preparation ("Pentral 80") in sustaining blood nitrate levels.
D000328:Adult; D003692:Delayed-Action Preparations; D006801:Humans; D008297:Male; D008875:Middle Aged; D009566:Nitrates / Q000097:blood*; D009573:Nitrites / Q000097:blood; D010417:Pentaerythritol Tetranitrate / Q000008:administration & dosage*
D003692:Delayed-Action Preparations; D009566:Nitrates; D009573:Nitrites; D010417:Pentaerythritol Tetranitrate