No interactions have been seen when Tamsulosin Hydrochloride (Amso) was given concomitantly with either Atenolol, Enalapril, Nifedipine or Theophylline.
Concomitant Cimetidine brings about a rise in plasma levels of Tamsulosin (Amso), while Furosemide a fall, but as levels remain within the normal range posology need to be adjusted.
Concurrent administration of other α1-adrenoceptor antagonists could lead to hypotension effects.