Tenormin - Prescribing information for US residents. - http://www.astrazeneca-us.com/pi/tenormin.pdf
Tenoretic - Atenolol and chlorthalidone. Prescribing information for US residents. - http://www.astrazeneca-us.com/pi/tenoretic_lpv.pdf
Atenolol Home Page - Privately maintained site describes structure, physical properties, uses, administration, side effects, and drug interactions. - http://www.sunderland.ac.uk/~hs0dad/profile/atenolol/atenhmpg.htm
DrugDigest: Atenolol ( Tenormin ) - Information on dosage, usage, side effects, interactions, and drug comparisons including generics when available. - http://www.drugdigest.org/DD/DVH/Uses/0,3915,54%7CAtenolol,00.html
Atenolol - Antianginal; antihypertensive; beta blocker. Information from the RxList. - http://www.rxlist.com/cgi/generic/atenolol.htm