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| Web Pages | 
| Tenoretic | 
| Atenolol and chlorthalidone.  Prescribing information for US residents. | 
| Tenormin | 
| Prescribing information for US residents. | 
| Atenolol | 
| Antianginal; antihypertensive; beta blocker. Information from the RxList. | 
| DrugDigest: Atenolol ( Tenormin ) | 
| Information on dosage, usage, side effects, interactions, and drug comparisons including generics when available. |