| Combination of | |
|---|---|
| Atenolol | Beta blocker |
| Chlortalidone | Thiazide diuretic |
| Clinical data | |
| Routes of administration | Oral |
| Legal status | |
| Legal status |
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| Identifiers | |
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Co-tenidone (BAN) is a non-proprietary name used to denote a combination of atenolol and chlortalidone. Co-tenidone is used in the treatment of hypertension. The use of β-blockers in hypertension was downgraded in June 2006 in the United Kingdom to fourth-line because they perform less well than other drugs, and because atenolol, the most frequently used β-blocker, at usual doses carries an unacceptable risk of provoking type 2 diabetes.[1]