| Features | |
| Active substance | Metoprolol |
| Also known as | Lopressor |
| Blood pressure | Reduces blood pressure |
| Chemical name | (RS)-1-(Isopropylamino)-3-[4-(2-methoxyethyl)phenoxy]propan-2-ol |
| Dosage (medical) | Typically 25-100 mg per day in divided doses |
| Dosage (sports) | Not applicable as it is not typically used for performance enhancement |
| Effects | Reduces cardiac output, controls arrhythmias, decreases blood pressure |
| Formula | C15H25NO3 |
| Half-life | 3 to 7 hours |
| Hepatotoxicity | Low |
| Lab Test | Blood levels can be monitored though not routinely done |
| Main action | Decreases heart rate and blood pressure |
| Side effects | Dizziness, fatigue, depression, shortness of breath, cold extremities |
| Storage conditions | Store at room temperature, away from moisture and heat |
| Strength | 100mg |
| Substance class | Beta blocker |
| Trade name | Lopressor, Toprol-XL |
| Use in sports | Not commonly used, except possibly to control heart rate and anxiety in precision sports |
| Water Retention | Low |
| Manufacturer | AstraZeneca Pharma Ltd. |
| Packing | 10 tabs/blister |