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Drug pairs showing pharmacodynamic synergism
| Drug pair | Frequency |
| Beta Blocker + CCB | 224 |
| Atenolol- Amlodipine | 136 |
| Metoprolol- Amlodipine | 88 |
| Beta Blocker + ARB | 46 |
| Atenolol- Losartan | 15 |
| Metoprolol-Losartan | 15 |
| Atenolol-Valsartan | 4 |
| Metoprolol- Valsartan | 4 |
| Atenolol- Telmisartan | 4 |
| Metoprolol- Telmisartan | 2 |
| Carvedilol- Losartan | 1 |
| Carvedilol-Valsartan | 1 |
