Viagra is used for treating erectile dysfunction (e.g. male impotence). It works by helping the blood flow into the penis to achieve and maintain an erection during sexual stimulation.
Cialis is to treate male impotence (eg, men's erectile dysfunction). It is supposed to be used for other purposes.
comparing to Viagra and Levitra, Cialis' effect lasts much longer - up to 48 hours. Besides, Cialis has fewer side effects;
Cialis is to be taken from 30 minutes to 12 hours before sex;
66% clients prefer Cialis to Viagra.
Cialis is to be used for daily use, so you can be ready anytime.
How to use
Viagra is to be taken 30 minutes to 1 hour before sexual activity. You may take it up to 4 hours before sexual activity. Viagra is not supposed to be taken more often than once per day.
Cialis should be taken as directed by your doctor. Please check the label to detemine an exact dosing instructions.
Cialis is to be taken oral, with or without food.
For using as needed: Cialis is to be taken at least 30 minutes before sexual activity, as directed by your doctor. Cialis' effects can last for up to 48 hours after taking.
For daily use: Take Cialis regularly at about the same time each day.
Talk to your doctor, if you have questions about the way of taking Cialis. Consult your physician before eating grapefruit or drinking grapefruit juice while using Cialis.
Drug Class and Mechanism
Viagra is a phosphodiesterase type 5 inhibitor and it works by helping the blood flow into the penis to achieve and maintain an erection during sexual stimulation.
Cialis is a phosphodiesterase inhibitor type 5. It works by helping the blood flow into a penis to achieve and maintain an erection.
Viagra is to be used as necessary, so you are not supposed to take it according to a schedule.
If you miss a dose of Cialis and you still intend to engage in sexual activity, take it as soon as you remember. Continue to take it as directed by your doctor.
Viagra is to be kept in its original container. It is to be stored at room temperature between 59 and 86 degrees F (15-30 degrees C) away from moisture, heat and light and out of the reach of children.
Keep Cialis at room temperature away from moisture, heat and light (between 59 and 86 degrees F (15-30 degrees C)). Store this medication out of the reach of children.
Possible Side Effects
If you experience any of the following serious side effects, stop taking Viagra and seek emergency medical attention or notify your doctor immediately:
sudden vision loss;
ringing in your ears, or sudden hearing loss;
chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling;
swelling in your hands, ankles, or feet;
shortness of breath;
feeling light-headed, fainting; or
penis erection that is painful or lasts 4 hours or longer.
Less serious side effects may include:
warmth or redness in your face, neck, or chest;
upset stomach; or
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.
The most common side effects with Cialis are headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours.
Patients who get back pain and muscle aches usually get it 12 to 24 hours after taking Cialis. Back pain and muscle aches usually go away by themselves within 48 hours. Call your doctor, if you get a side effect that bothers you or one that will not go away.
If you are older than 65 years, you can suffer Viagra side effects. However, your physician may prescribe you a lower dose of this medication.
Sexual stimulation is required for Cialis effect. Without sexual stimulation you can't get erection just by taking Cialis.
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