viagra vs cialisErectile deficit, or impotence, is one of the main sexual problems in men. Its main symptom is the inability to achieve or maintain an erection that would allow satisfactory sexual performance. It is a very frequent disorder among men 50 years of age or older, but it also often affects younger subjects as well. ED is a serious problem that also has psychological repercussions on the individual who is unable to have a full and lasting erection.

For decades now there have been drugs that can solve the problem. The first to come out and hit the shelves was Viagra. In the following years many other drugs were added to the list. The most famous of the alternatives to the blue pill, Viagra, is undoubtedly Cialis.

How does Viagra work? What effect does the famous blue pill have? How does Cialis work? If you suffer from erection problems, it is likely that you have wondered which drugs work on erectile dysfunction. You have surely heard of Cialis and Viagra. Let's try to dispel the doubts that accompany these two drugs.

Is Cialis stronger than Viagra?

When you face the dilemma of Viagra vs. Cialis, which one should you choose? Many men are not sure. So what is the difference between Viagra and Cialis? Viagra and Cialis are drugs of the same class of medicines and that must be prescribed by a doctor. These are very effective drugs to resolve erection dysfunction that belong to the class of phosphodiesterase 5 inhibitors. They are both clinically tested, and have a long history of safe use.

The two drugs have different active ingredients, sildenafil and tadalafil. They vary is the duration of their action but are otherwise superimposable, that is, they can be taken alternating with each other. You should only take either in the absence of contraindications, which are the same for Viagra and Cialis.

These drugs work by dilating the blood vessels of the penis. This helps to increase the flow of blood into the genitals. In this way, a stable erection occurs. Even from the point of view of the side effects, the two drugs are similar enough, albeit with some important differences. Duration is one of the most marked differences between the two. Viagra lasts up to 4 hours, while Cialis can remain active for up to 36 hours.

The onset time is different for the two drugs. Viagra should be taken between 30 and 60 minutes before the start of sexual activity. Cialis should be taken 30 minutes before. From a dosage point of view, you should not take more than one pill a day of either Viagra or Cialis.  

How do these drugs work?

What do these drugs do? These drugs are inhibitors of cGMP enzymatic degradation. The cGMP enzyme makes the blood vessels of the penis relax. This enzyme allows the increase in the size and hardness of the penis. Simply put, this substance is the one required for a hard and lasting erection to take place.

No aphrodisiac effect is detected for either Viagra or Cialis because they do not increase sexual desire, but only allow a longer, turgid and satisfying erection.

Viagra allows the increase in the flow of blood to the penis, producing an erection whenever you are sexually aroused. Viagra pills are available in doses 25mg, 50mg and 100mg. The pill should be taken between 30 and 60 minutes before sexual intercourse and the effects produced can last up to 5 hours. Viagra is also among the most searched words on the web.

Cialis is a drug used to treat erectile dysfunction. It appeared on the market 5 years after Viagra had been developed. Its function is similar to that of Viagra, but Cialis provides an effective action of up to 36 hours. Cialis that is supposed to be taken ”on demand” is available in doses of tadalafil 10 mg or tadalafil 20 mg. 

Cialis Daily (2.5 mg or 5 mg), which involves taking one pill a day and always at the same time, allows you to cure erectile dysfunction in a lasting way.

What follows is a chart of Viagra and Cialis differences mapped out for their brand and  generic versions for both classical tablet form and faster-acting chewable pastilles.

Table 1. A comparison of brand and geenric Viagra and Cialis drugs

Drug Name Dosage Time Before It Starts To Act How to take it? Fatty Meals / Alcohol Duration of the effect
Viagra 25mg, 50mg, 100mg 1 hour Take with a glass of water No 3-4 hours
Generic Viagra 25mg, 50mg, 100mg, 150mg 1 hour Take with a glass of water No 3-4 hours
Viagra Soft 50mg, 100mg 15 - 20 minutes Must be chewed until complete dissolution No 3-4 hours
Cialis 2.5mg, 5mg, 10mg, 20mg 30 minutes Take with a glass of water Yes / No 36 hours
Cialis Soft 20mg 15 - 20 minutes Must be chewed until complete dissolution Yes / No 36 hours
Generic Cialis 5mg, 10mg, 20mg, 40mg 30 minutes Take with a glass of water Yes / No 36 hours