When taking Fildena 120 mg (which contains Sildenafil Citrate), it's advisable to avoid grapefruit and grapefruit juice due to potential interactions. Grapefruit can affect the metabolism of Sildenafil by inhibiting the enzyme CYP3A4 in the liver, which is responsible for breaking down the medication. This can lead to:

Increased Sildenafil Levels: Grapefruit can increase the concentration of Sildenafil in the bloodstream, potentially enhancing its effects and side effects.

Elevated Risk of Side Effects: Higher levels of Sildenafil can lead to more severe side effects, such as headaches, dizziness, flushing, and low blood pressure.

Unpredictable Effects: The interaction between grapefruit and Sildenafil can lead to unpredictable effects, making it harder to manage the medication’s impact.

To avoid these issues, it's best to avoid grapefruit and grapefruit juice while using Fildena 120 mg. If you have any concerns or experience unusual effects while on this medication, consult your healthcare provider for advice.