Before starting Cialis, your doctor will likely order liver function tests. These check levels of specific enzymes in your blood. Elevated levels can indicate liver problems.
The most common tests measure:
| Alanine aminotransferase | ALT | Indicates liver cell damage. High ALT suggests potential issues. |
| Aspartate aminotransferase | AST | Also shows liver cell damage, but can be elevated in other conditions. Considered alongside ALT. |
| Alkaline phosphatase | ALP | Suggests problems with bile ducts or liver. Increases can point to blockages or diseases. |
| Gamma-glutamyl transferase | GGT | Often elevated alongside ALP, further supporting liver or bile duct problems. |
| Bilirubin | BIL | Measures how well your liver processes bilirubin (a byproduct of red blood cell breakdown). Elevated levels indicate impairment. |
Cialis can, in rare cases, affect liver enzymes. Your doctor will interpret your results considering your medical history and other factors. Abnormal results may necessitate further investigation or adjustments to your treatment plan. Regular monitoring is recommended for those taking Cialis long-term.
If you experience unusual symptoms like jaundice (yellowing of skin or eyes), dark urine, or light-colored stools, contact your physician immediately. These could indicate liver problems requiring urgent attention.












































