| Water Retention | No significant effect |
|---|---|
| Hepatotoxicity | Low risk |
| Lab Test | Not typically required for monitoring |
| Also known as | Adcirca when treating pulmonary arterial hypertension |
| Blood pressure | Typically lowers blood pressure |
| Trade name | Cialis |
| Storage conditions | Store at room temperature away from moisture and heat |
| Chemical name | Tadalafil |
| Formula | C22H19N3O4 |
| Substance class | Phosphodiesterase type 5 inhibitor |
| Main action | Increases blood flow to particular areas of the body, primarily the penis, by relaxing muscles of the blood vessels |
| Half-life | 17.5 hours |
| Dosage (medical) | 10 mg or 20 mg taken before sexual activity, or 2.5 mg to 5 mg taken once daily |
| Dosage (sports) | Not typically used in sports for performance enhancement |
| Effects | Helps achieve and maintain an erection, improves exercise capacity in pulmonary arterial hypertension |
| Side effects | Headache, stomach upset, back pain, muscle pain, stuffy nose, flushing, or dizziness |
| Use in sports | Sometimes used off-label for muscle pump during workouts |
| Manufacturer | Pharmaceutical |
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