A pint of beer or a glass of wine is unlikely to impair the effects of Forzest pills. However, binge drinking should be avoided, as more alcohol in the body could affect the drug’s efficacy, making it difficult to achieve or sustain an erection. Similarly, grapefruit juice may impact the drug’s efficacy, making you more susceptible to side effects. Therefore, you should refrain from drinking alcohol or grapefruit juice when using Forzest.