Dissatisfaction with sexual life negatively affects relationships both in the family and at work. The most common cause of male sexual issues is erectile dysfunction. Generally, a man suffering from ED cannot fully perform in sexual intercourse. Modern drugs boosting erection easily solve the problem of insufficient sexual life, caused by impaired potency. Which of them to choose? The most common brands for solving problems with unstable erection are Levitra, Viagra and Cialis. My Canadian Pharmacy offers its customers a unique chance to consider them in comparison, try all of them in one trial pack and choose the most suitable one.
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Levitra (vardenafil), Viagra (sildenafil) and Cialis (tadalafil) contain inhibitors of type 5 phosphodiesterase. The mechanism of production of this group is not fundamentally different. They block PDE5 slowing the metabolism of cGMP, thereby observing a strong and prolonged erection. All PDE5 inhibitors are symptomatic and produce the expected effect only in case of sexual stimulation. In other words, in case of absence of sexual desire the drugs are useless.
For the patient, not medical factors come to the fore, such as:
- fast onset time;
- duration of effect;
- possibility of co-administration with rich food and alcohol;
- dose and frequency of application;
Vardenafil (Levitra) is the fastest agent among PDE inhibitors 5. In 10-15 minutes after Levitra the medicine a man can make a full sexual intercourse. Cialis and Viagra start working in 30-60 minutes before sexual intercourse.
The duration of Levitra action is from 8 to 10 hours. But given the physiological characteristics of the body, it is recommended to perform sexual intercourse no later than 5 hours after taking the medication. Viagra’s action lasts 4-6 hours. In this regard, Cialis is a champion, since its time of action is 36 hours. This circumstance makes it easier to plan sexual intercourse.
The recommended dose of vardenafil (Levitra) is 10 mg. With a mind case of ED, 5 mg is enough, and with a severe erectile dysfunction, a maximum dose of 20 mg is prescribed. The recommended dose of tadalafil (Cialis) is 20 mg. Sildenafil (Viagra) is taken in the recommended dosage of 50 mg.
The action of Levitra and Cialis is not limited to eating or drinking alcohol. However, fatty foods slow the absorption of the drug, whereas Viagra’s effect becomes weaker if combined with ethanol and fatty food.
Vardenafil, tadalafil and sildenafil are contraindicated in cases of severe liver and kidney disease, arterial hypotension or hypertension and retinal diseases. Do not take PDE5 inhibitors simultaneously with nitrates and nitrogen oxide donors.
Side-effects of Levitra are less pronounced than in Cialis and Viagra. Most often such conditions as dyspepsia, redness of face, nasal congestion occur. The frequency of side-effects in Cialis is reduced with respect to the flow of blood to the head. But unlike Levitra, gastrointestinal ailments increase, and pains in the lower back are possible. Viagra has approximately the same symptoms as other PDE5 inhibitors but in addition to similar ailments, a visual impairment (change in color perception) is added.
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The problem of choosing between drugs is ambiguous. The problem of the question: “Cialis or Levitra – which one is better?” The doctor and the patient define different selection criteria. When prescribing a drug, the doctor first of all takes into account the patient’s psychological and somatic status, as well as the presence of concomitant diseases. Therefore, he will prescribe the drug that best suits the patient according to the mechanism of its action and will not cause harm.
While choosing a certain drug, the following features are considered:
- how fast the medicine works;
- how long the desired effect remains;
- whether administration is possible simultaneously with food or alcohol;
- in what dose or how often you can take the drug;
- possible adverse effects
Vardenafil acts faster than other analogues, whereas the distinctive feature of tadalafil is the long-term effect. As well as Levitra, Cialis is quickly absorbed by the body, and the onset of an erection can occur about 20 minutes after taking the medication. Viagra is rightly considered a gold standard of drugs for regulating erection. The percentage of side-effects from Viagra, unlike Levitra, is slightly higher with regard to the flow of blood to the head (face reddening, headache). Despite some differences, the drugs are the closest analogues. Cialis has an advantage over Levitra and Viagra in a longer time range of action (36 hours). However, the action of the inhibitor is inferior to that of vardenafil.
All in all, let us consider the distinctive features of Viagra, Cialis and Levitra
- Levitra is a German company, Bayer. The product is released in August 2003. The active substance of the drug is vardenafil.
- Cialis is manufactured by the American company, Eli Lilly in 2003. The active substance of the drug is tadalafil.
- Viagra is produced by Pfizer, USA in 1998. The active substance of the drug is sildenafil.
Dosage, standard / maximum:
- Levitra – 10/20 mg;
- Cialis – 20/40 mg;
- Viagra – 100/200 mg.
- Levitra has a quick and strong action of the active substance;
- Cialis has the longest action
- Viagra is the most proven remedy; well- known brand throughout the world.
Time of action, start / finish:
- Levitra – 10 – 15 minutes / 8 – 10 hours;
- Cialis – 20 – 30 minutes / 36 hours;
- Viagra – 30 – 60 minutes / 4 – 6 hours.
Combination with food and alcohol intake:
- Levitra may be combined, but the exception is fatty food;
- Cialis may be combined;
- Viagra must not be combined.
The most frequent side effects:
- Levitra – redness of the face, pressure in the eye, nasal congestion;
- Cialis – abnormalities of the gastrointestinal tract, back pain, headache;
- Viagra – a change in color perception, headache, tides of blood to face.
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