What else should I avoid while taking Cialis (Tadalafil)?
Do not take any other drug used to treat impotence, such as Sildenafil Citrate (Viagra), Vardenafil (Cialis), Alprostadil (Caverject, Muse, Edex) or Yohimbine (Yocon, Yodoxin, others) without talking to your doctor first.
Grapefruit and grapefruit juice may interact with Cialis (Tadalafil) The interaction could lead to potentially adverse effects. You should discuss the use of grapefruit and grapefruit juice with your doctor. Do not increase or decrease the amount of grapefruit products in your diet without discussing this with your doctor first.