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Description Levitra:
Commercial (proprietary) name: Levitra
International (nonproprietary) name: Vardenafil
Pharmacological action: By blocking the enzyme fosfodiesterazu type 5 (PDE-5), under the influence of which is split cGMP, Levitra, thereby providing enhancement of endogenous NO in the cavernous bodies, resulting in the ability of the drug enhances the natural response to sexual stimulation. The clinical effect is realized before reaching Smax. Getting action after oral administration of 20 mg and 10 mg starts in 10 minutes, allowing an erection sufficient for penetration and successful completion of intercourse at 34 and 40% of patients with mild to moderate mild erectile dysfunction, respectively. After 25 min, respectively, the effect occurs in 53% and 50% of patients, which coincides with the beginning of the emergence of drug in the blood and the rapid growth of its concentration. Duration – 8-12 hours
Pharmacokinetics: Levitra is rapidly absorbed after oral administration. TCmax – 30-120 min. Absolute bioavailability – 15%. When receiving a diet containing no more than 30% fat, pharmacokinetic parameters (Cmax, TCmax, AUC) are not changed. Simultaneous treatment with a diet containing high fat (57%), reduces the rate of absorption (TCmax increased to 60 min), Cmax decreased by 20% without a significant change in AUC. Vardenafil and its major metabolite (M1) is well bound to plasma proteins (up to 95%), and this property is reversible and not dependent on the total concentration of the drug. 90 min after administration of oral vardenafil in semen found no more than 0.00012% of the dose. Is metabolized predominantly hepatic oxidases with cytochrome P450 isozymes CYP3A4, and CYP3A5 and CYP2C9. T1 / 2 – 4-5 h, the main metabolite M1 – 4 h. The total clearance – 56 l / h. We derive mainly from the stool in the form of metabolites (91-95%), to a lesser extent the kidneys (2-6%). Older men (over 65 years) compared with young men (18-45 years) a significant reduction of hepatic clearance is not marked. On average, Cmax and AUC in the elderly increased by 34 and 52% respectively. Patients with small (QA over 55-80 ml / min) renal insufficiency changes of pharmacokinetic parameters were observed, with moderate (QA over 30-50 ml / min) and severe (less than 30 ml / min) renal insufficiency AUC increased by 20 — 30%. Patients on hemodialysis, pharmacokinetics of vardenafil has not been studied. In patients with hepatic insufficiency (Child class of scale-Pyuga) Cmax and AUC after oral administration of 10 mg increased to 22 and 17% respectively (1.2 times) with moderate hepatic impairment (class B on the scale of Child-Pyuga) Cmax and AUC increased by 130 and 160% respectively (2.6 times). Pharmacokinetics was not studied in patients with severe hepatic insufficiency (class C on the scale of Child-Pyuga).
Indications: Levitra is designed to enhance potency in men suffering from erection disorders (erectile dysfunction), including the extreme form of erectile dysfunction – impotence. These disturbances lacked sufficient for sexual intercourse erection or weak erection.
Contraindications: Hypersensitivity, simultaneous reception of organic nitrates or other LAN emitting NO, alpha-blockers. Severe hepatic insufficiency, renal disease in the terminal stage, requiring dialysis, hypotension (systolic blood pressure at rest less than 90 mm Hg. St), recent myocardial infarction or stroke (within the past 6 months), unstable angina, the hereditary degenerative disease of the retina ( including retinitis pigmentosa). Age 16 years.
Dosage regimen: inside, regardless of the meal. Initial recommended dose – 10 mg for 25-60 minutes before sexual intercourse. Can be taken at any time during the period from 4-5 h up to 25 minutes before sexual activity. The maximum recommended frequency of admission – 1 times per day. To be effective requires a sufficient level of sexual stimulation. Depending on the efficacy and tolerability the dose may be increased to 20 mg or decreased to 5 mg per day. The maximum daily dose – 20 mg. Corrections dosing regime in elderly patients is not required. Patients with severe hepatic insufficiency insignificant correction dosing regime is not required. In patients with moderate hepatic impairment initial dose – 5 mg per day. In the future, depending on the efficacy and tolerability of treatment dose can be increased to 10 mg and then to 20 mg. Patients with mild and moderate renal insufficiency correction dosing regime is not required.
Side effects:
More than 10%: headache, hot flushes blood to the skin.
Frequent (1-10%): dyspepsia (including nausea), dizziness, nasal congestion.
Infrequent (0.1-1%): increase of blood pressure, photosensitivity reaction.
Rare (0.01-0.1%): reduction of blood pressure, increased muscle tone, priapism.
Cautions: Due to the fact that sexual activity is associated with some degree of deterioration in the flow of cardiovascular disease, before making an appointment at the treatment of erectile dysfunction is necessary to assess the state of the cardiovascular system of the patient.
Interaction: Inhibitors of cytochrome P450 (cimetidine, ketoconazole, itraconazole, indinavir, ritonavir) may decrease the clearance of vardenafil (if joint application with these drugs should not exceed the dose of vardenafil 5 mg / day). In a joint application with the CYP3A4 inhibitor erythromycin did not exceed the recommended dose of vardenafil 10 mg per day. Concomitant use of alpha-blockers may cause a decrease in blood pressure, so Levitra should be taken no earlier than 6 h after administration of alpha-blockers. There have not been significant pharmacokinetic interactions when co-application of Levitra with glyburide, nifedipine, warfarin and digoxin. In a joint application with warfarin was not observed changes in prothrombin time and clotting factors. In a joint application with the ASC, antacids, ACE inhibitors, beta-blockers, diuretics, hypoglycemic LAN (sulfonylureas and metformin), ranitidine pharmacokinetics of vardenafil has not changed. Since PDE inhibitors affect the system NO / cGMP, PDE5 inhibitors may increase the hypotensive effects of nitrates. Monotherapy vardenafilom not inhibit platelet aggregation induced by various platelet agonists. In applying Levitra in concentrations exceeding therapeutic, there was a slight dose-dependent increase antiagregatsionnogo effect of sodium nitroprusside, singling NO. With caution the anatomic deformity of the penis (curved, cavernous fibrosis or Peyronie’s disease), diseases that predispose to the development of priapism (sickle cell anemia, multiple myeloma, or leukemia), the tendency to bleeding, peptic ulcer and 12 duodenal ulcer in the acute stage.
Overdose: Symptoms: pain in the back with no signs of toxic effects on muscle and nervous system. Treatment: symptomatic. Not output through hemodialysis.
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Description drug Propecia:
“Finasteride” (the patented name “Propecia http://www. propecia.com) – medication for the treatment of male type of baldness (ITO) – the only means to treat logistics as approved by the Administration for food and medicines (APPLP) for use by prescription only. Several years of investigation and use of the drug for more than one million patients show that finasteride is designed for long-term use, it is effective and safe in the treatment of MTO, regardless of nationality.
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Description of the drug Zyban:
Zyban (bupropion) – a drug that made the breakthrough in the fight against nicotine addiction. The property of the drug to suppress the craving for smoking, like many great discoveries, it was discovered by accident. U.S. doctors company Glaxo Wellcome, initially carrying out research on the basis of antidepressant bupropion (Zyban active ingredient), it was discovered they used veterans of the Vietnam war also are likely to quit smoking. It was made a startling discovery beznikotinovogo drug Zyban (bupropion), which is only in the U.S. has helped millions of smokers to quit.
Description GENERIC drug Roaccutane (Isotretinoin):
Roaccutane (izitretinoin) rightly described as drug number 1 in the world for the treatment of severe acne. Millions of people around the world have changed their appearance due roakkutanu (isotretinoin).
Isotretinoin – an active ingredient Roaccutane – a synthetic stereoisomer transretinoevoy acid for oral administration. Protivoseboreynym has a specific effect of severe acne (acne), beyond the other forms of therapy. The mechanism of action of the drug has not been fully clarified, however, found that the improvement in clinical disease associated with dose-dependent decrease in activity of the sebaceous glands and a decrease in their size, as confirmed by histological studies. In addition, isotretinoin reduces skin inflammation.
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Description of the drug Diflucan Generic:
About 30% of women At least once during the life of his personal experience learned what a yeast infection (vaginal candidiasis). No need to describe any discomfort brings with it a disorder of women microflora. Thrush cause yeast fungi genus Candida. Ironically, these fungi are part of the normal microflora of virtually everyone. Generic Diflucan (brand name Diflucan full analogue of the company Pfizer) will quickly get rid of this sensitive disease.
Generic Diflucan (Fluconazole) antifungal agents for systemic use, triazole derivative, produces highly selective inhibitor of sterol synthesis in the cells of fungi.
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Description of the drug Zyprexa Generic:
Zyprexa – antipsychotic (neuroleptic). Provides a reduction of both productive and negative disorders: eliminating delusions, hallucinations, and automatism; reduces the severity of such phenomena as thought disorder, hostility, suspiciousness, emotional and social autism, poverty of speech. Rarely causes extrapyramidal disorders. It is used to treat schizophrenia and other psychoses (including affective disorders with concomitant); acute manic or mixed episodes in bipolar affective disorder.
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Generic Viramune
Treatment and prevention of HIV-1 infection. In appointing the drug as monotherapy to him quickly and almost always develop viral resistance, so it should always be assigned in combination with at least two other antiretroviral drugs.
Antiviral. Nevirapine is a non-nucleoside reverse transcriptase inhibitors (NNRTIs) of HIV-1. Nevirapine is directly connected to the reverse transcriptase (ОT) and blocks RNA-and DNA-dependent DNA polymerase reaction, destroying the catalytic center of the enzyme. The action of nevirapine is not competitive with respect to the nucleoside and nucleoside triphosphate. The drug does not block the reverse transcriptase of HIV-2 and DNA polymerase of eukaryotes (human DNA polymerase alpha, beta, gamma or delta).
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Viagra and drugs
The drug Viagra, used to treat erectile dysfunction in mature men are increasingly finding use among young people. Today, young people are using Viagra as a drug for a good pastime. The popularity of drugs among young people, as a means to increase sexual capacity and sensations, and not to fight erectile dysfunction becomes truly horrifying proportions. This is doubly dangerous, because the simultaneous reception of Viagra drugs can have serious consequences for health.
Viagra safe drug, especially for young, healthy men. In healthy men side effects are usually minor and transient, such as headache, flushing of the face, nasal congestion, and slight impairment. A much more serious consequences may be taking Viagra with drugs such as the popular «Ecstasy», or that much more dangerous, with amyl nitrate or simultaneously with the popular sexual stimulant “poppers” buyout, by the way, is not a drug, since these substances as well as Viagra, lowers blood pressure and as a result, a sharp drop in blood pressure can lead to unconsciousness or even death.
Today, many of those who are concerned about this issue, think, can we consider a company Pfizer, manufacturer of Viagra, responsible for the situation.
Reason for concern really is. According to statistics from 1998 to 2002, the number of men in the age of 45 who use Viagra, tripled. This indicates that Viagra is used as a means to enhance sexual capacity, and not as a medicine. Thus, we can talk about that today, Viagra is rather a category of drugs, rather than the category of drugs.
The fact that today’s young people think they need Viagra, alarming in itself, but more disturbing is the fact that Pfizer does very little in order to limit sales of Viagra, for purposes not related to the treatment of erectile dysfunction. Given the potential danger posed by the proliferation of Viagra among youth, we see that Pfizer should pay more attention to informing young people about the consequences of taking Viagra with drugs.
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Impotence as a consequence of smoking
Male smokers are at increased risk of erectile dysfunction study by Tulane University.
The study was performed team of scientists led by professor of epidemiology at Tulane University, Jiang Hui in 2000-2001, the results were published in the authoritative edition of the American Journal of Epidemiolodzhi. The study observed 7684 Chinese men in order to identify the relationship between smoking and erectile dysfunction. The researchers used questionnaires to assess the relationship between cigarette smoking and erectile dysfunction. Men interviewed did not suffer from vascular disease and were aged between 35-74 years. The research team discovered an arithmetical relationship between the number of cigarettes smoked and the likelihood of erectile dysfunction. I interviewed with diabetes, the relationship between smoking and erectile dysfunction was even more pronounced. According to the study, approximately 22.7 per cent of cases of erectile dysfunction among Chinese men might be attributable to cigarette smoking. The researchers suggest more emphasis on prevention of smoking, thereby reducing the likelihood of erectile dysfunction.
Generic (analog), the newest drug to fight nicotine dependence Zyban (bupoprion).
