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Cialis is usually taken only when needed, just before sexual activity. The medication can help achieve an erection when sexual stimulation occurs. An erection will not occur just by taking a pill. Follow your doctor's instructions. Do not take Cialis more than once a day. Allow 24 hours to pass between doses. Store this medication at room temperature away from moisture and heat. While taking Cialis you should avoid drinking alcohol, which can increase some of the side effects of Cialis. Grapefruit and grapefruit juice may interact with cialis. Discuss the use of grapefruit products with your doctor. Do not increase or decrease the amount of grapefruit products in your diet without first talking to your doctor. Symptoms of a Cialis overdose may include chest pain, nausea, irregular heartbeat, and feeling light-headed or fainting. Taking Cialis there may occur some side effects, such as headache, facial flushing, and upset stomach. Less commonly, bluish vision, blurred vision.
Since cialis is used as needed, you are not likely to be on a dosing schedule.