Drug Interactions with Vardenafil
Primary endpoints were evaluated at 3 months during the trials.
- Levitra is not suitable for men with severe liver or kidney impairment.
- Do not take Levitra with other medications containing nitrates for chest pain.
- Older adults should use Levitra with caution due to potential side effects.
- Levitra is sometimes used in clinical trials for other conditions.
- Keep Levitra out of reach of children due to potential toxicity.
- Store Levitra in a cool, dry place and away from direct sunlight.
- Patients should inform their healthcare provider about all current medications.
- Levitra can cause priapism, a prolonged erection requiring medical attention.
For all four trials, the primary endpoints were Erectile Function (EF) Domain score and two aspects of the Sexual Encounter Profile (SEP), i.e., the ability to achieve vaginal penetration (SEP2) and the ability to maintain an erection long enough for successful intercourse (SEP3). For the trial involving 762 general population ED patients at the 10 mg dose, the EF score, SEP2, and SEP3 in the LEVITRA group were 21 (baseline 13), 75%, and 64%, respectively, compared to 15 (baseline 14), 52%, and 32%, respectively, in the placebo group.
| Medication Class | Potential Interaction | Effect |
|---|---|---|
| Nitrates | Dangerous hypotension | Should not be combined |
| Alpha-blockers | Lower blood pressure | May cause orthostatic hypotension |
| CYP3A4 inhibitors | Increased Levitra levels | Risk of side effects |
| Antifungal agents (e.g., ketoconazole) | Increased drug levels | Potential toxicity |
For the trial involving 439 patients with ED and diabetes at the 10 mg dose, the EF score, SEP2, and SEP3 in the LEVITRA group were 17, 61%, and 49%, respectively, compared to 13, 36%, and 23%, respectively, in the placebo group. For the trial involving 427 patients with ED after radical prostatectomy at the 10 mg dose, the EF score, SEP2, and SEP3 in the LEVITRA group were 15, 47%, and 37%, respectively, compared to 9, 22%, and 10%, respectively, in the placebo group.
Is Levitra or Cialis more effective?
LEVITRA’s inhibitory effect on PDF5 is many more times than that of other PDE types (1, 2, 3, 4, 6, 7, 8, 9, 10, and 11). LEVITRA’s therapeutic effect is contingent on the presence of a sexual stimulation; no sexual stimulation, no release of nitric oxide from nerve endings, and so no effect by LEVITRA. Efficacy and Benefits: Four double-blind, randomized, fixed-dose, multicenter trials involving 2,431 patients were conducted to evaluate the efficacy of LEVITRA. Two trials were conducted with general ED patients, one trial with ED/diabetes patients and one trial with ED/post-prostatectomy patients. The fixed doses were 5 mg, 10 mg, and 20 mg daily. Adverse Reactions: Patients in the LEVITRA group experienced headache (15%), flushing (11%), rhinitis (9%), dyspepsia (4%), sinusitis (3%), and flu syndrome (3%), compared to 4%, 1%, 3%, 1%, 1%, and 2%, respectively, in the placebo group.
- Levitra works by blocking PDE5 enzyme, enhancing erectile response.
- Patients should not engage in strenuous activity immediately after taking Levitra.
- It is often prescribed when other ED treatments have failed or are unsuitable.
- Levitra has a rapid onset, with effects usually seen within 30-60 minutes.
- The medication is available in various dosages to tailor treatment.
- Alcohol and high-fat foods can impair the absorption of Levitra.
- Women should not take Levitra as it is not approved for female use.
- Regular follow-up with a healthcare provider helps monitor treatment efficacy.
Sexual activities coincide with increased cardiovascular activities and can increase the risk for cardiovascular events.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Levitra Original | 20mg | 64 + 4 Pills | 298.45€ 284.24€ | |
| Levitra Generic | 60mg | 20 Pills | 81.30€ 77.43€ | |
| Levitra Professional | 20mg | 90 + 2 Pills | 304.49€ 289.99€ | |
| Levitra Generic | 40mg | 30 + 2 Pills | 93.58€ 89.12€ | |
| Levitra Generic | 60mg | 270 + 10 Pills | 714.53€ 680.50€ | |
| Levitra Generic | 60mg | 120 + 8 Pills | 372.33€ 354.60€ | |
| Levitra Soft Tabs | 20mg | 120 + 8 Pills | 288.52€ 274.78€ | |
| Levitra Generic | 40mg | 10 Pills | 41.37€ 39.40€ | |
| Levitra Generic | 10mg | 90 + 8 Pills | 150.58€ 143.41€ | |
| Levitra Original | 20mg | 12 Pills | 81.99€ 78.09€ | |
| Levitra Generic | 20mg | 60 + 6 Pills | 131.11€ 124.87€ | |
| Levitra Professional | 20mg | 120 + 4 Pills | 348.44€ 331.85€ |
Patients with heart conditions should be discouraged from using LEVITRA or other treatments for erectile dysfunction.
What should I avoid while using Levitra?
Hepatic Impairment: In volunteers with mild hepatic impairment (Child-Pugh A), the Cmax and AUC following a 10 mg vardenafil dose were increased by 22% and 17%, respectively, compared to healthy control subjects. In volunteers with moderate hepatic impairment (Child- Pugh B), the Cmax and AUC following a 10 mg vardenafil dose were increased by 130% and 160%, respectively, compared to healthy control subjects. Vardenafil has not been evaluated in patients with severe (Child-Pugh C) hepatic impairment. Renal Impairment: In male volunteers with ClCr= 50-80 mL/min, the pharmacokinetics of vardenafil were similar to those observed in a control group with ClCr >80 mL/min. In male volunteers with ClCr = 30-50 mL/min or ClCr <30 mL/min renal impairment groups, the AUC of vardenafil was 20-30% higher compared to that observed in a control group with ClCr >80 mL/min).
What is Viagra?
Vardenafil pharmacokinetics have not been evaluated in patients requiring renal dialysis. Advise patients of the contraindication of vardenafil with regular and/or intermittent use of organic nitrates. Patients should be counseled that concomitant use of vardenafil with nitrates could cause blood pressure to suddenly drop to an unsafe level, resulting in dizziness, syncope, or even heart attack or stroke. Inform patients of the potential cardiac risk of sexual activity for patients with preexisting cardiovascular risk factors. Inform patients that in some patients concomitant use of PDE5 inhibitors, including vardenafil, with alpha-blockers can lower blood pressure significantly leading to symptomatic hypotension (for example, fainting). Bayer announced that the compound vardenafil proved to be effective for ED regardless of severity of erectile function, cause or age.
Before taking this medicine
If priapism is not treated immediately, penile tissue damage and permanent loss of potency may result. Advise patients to stop treatment and seek medical attention in the event of sudden loss of vision in one or both eyes. Such an event may be a sign of non-arteritic anterior ischemic optic neuropathy (NAION), a cause of decreased vision, including permanent loss of vision, that has been reported rarely post-marketing in temporal association with the use of all PDE5 inhibitors. It is not possible to determine whether these events were related directly to the use of PDE5 inhibitors or to other factors. Inform patients of the increased risk of NAION in individuals who have already experienced NAION in one eye and discuss the increased risk of NAION among the general population in patients with a "crowded" optic disc, although evidence is insufficient to support screening of prospective users of PDE5 inhibitor, including vardenafil, for this uncommon condition.
Related treatment guides
Advise patients to stop treatment and seek cheapest generic levitra online prompt medical attention in the event of sudden decrease or loss of hearing. These events, which may be accompanied by tinnitus and dizziness, have been reported in temporal association to the intake of PDE5 inhibitors, including vardenafil. It is not possible to determine whether these events are related directly to the use of PDE5 inhibitors or to other factors. The use of vardenafil offers no protection against sexually transmitted diseases. Counseling of patients about protective measure necessary to guard against sexually transmitted diseases, including the Human Immunodeficiency Virus (HIV), should be considered. Bayer announced that it had filed its new drug application for vardenafil for the treatment of erectile dysfunction in the United States and Mexico. Bayer and GlaxoSmithKline announced that they had signed a world-wide co-promotion agreement on vardenafil.
Drug interactions of Levitra vs. Cialis
Mechanism of Disease: Penile erection is a hemodynamic event. There are many abnormalities that could lead to erectile dysfunction. Normally, the signal transduction events mediated by cyclic guanosine monophosphate (cGMP) lead to the relaxation of the smooth muscle of blood vessels that supply blood to the penis when there is sexual stimulation. The lack of, or insufficient sustained levels of, cGMP result in erectile dysfunction. Mechanism of Drug Action: During sexual stimulation, nitric oxide is released from nerve cells and subsequently from the endothelial cells in the corpus cavernosum of the penis.
Who Should Not Take Viagra™
Nitric oxide activates guanylate cyclase, which catalyzes the synthesis of cGMP from guanosine triphosphate (GTP). cGMP causes the smooth muscle to relax, allowing increased levitra 60 mg online blood flow into the penis, leading to an erection. Because of its importance, the level of cGMP is tightly regulated. The balance is maintained by production and degradation. As mentioned above, production of cGMP is initiated after nitric oxide is released. Bayer and GlaxoSmithKline announced that they had submitted the application for marketing authorization for vardenafil to the European Medicinal Evaluation Agency (EMEA). Bayer and GlaxoSmithKline announced that they had received marketing authorization from the European Commission for LEVITRA for the treatment of male erectile dysfunction.
Further information
There are numerous types of PDEs, with each type being preferentially expressed in different tissues. The predominant type expressed in the penis is PDE type 5 (PDE5). LEVITRA binds selectively to PDE5 and inhibits the enzymatic function of PDE5. Less cGMP is degraded, tilting the balance to a higher level of cGMP, thus enhancing penile erection. It was demonstrated by in vitro studies that LEVITRA inhibits PDE5 selectively. There are about 30 million men affected by erectile dysfunction in Europe.
Dosing information
Advise patients that the disintegrating tablet (Staxyn) is not interchangeable with the film-coated tablet (Levitra). General Notes: May be taken with or without food. (Tablet) Place on tongue to disintegrate; take without liquid and immediately upon removal from blister. Approval Status: Approved for marketing by the U.S. FDA on August 19, 2003.
Can I use Levitra or Viagra while pregnant?
Chemical/Biological Nature: LEVITRA is a small molecule chemical compound, with a molecular weight of 579.1 daltons. Administration: LEVITRA is taken orally 60 minutes before sexual activity. For most patients, the recommended starting dose is 10 mg. Depending on an individual’s response, the dose may be adjusted higher to 20 mg or lower to 5 mg. The recommended maximum dosing frequency is no more than once daily. The drug has also been approved by regulatory authorities in several Latin American countries.
How do these drugs work?
Patients prescribed vardenafil who are taking alpha-blockers should be started on the lowest recommended starting dose. Patients should be advised of the possible occurrence of symptoms related to postural hypotension and appropriate countermeasures. Patients should be advised to contact the prescribing physician if other anti-hypertensive drugs or new medications that may interact with vardenafil are prescribed by another healthcare provider. Discuss with patients the appropriate use of vardenafil and its anticipated benefits. It should be explained that sexual stimulation is required for an erection to occur after taking vardenafil.
More common
It should be taken approximately 60 minutes before sexual activity. Patients should be counseled regarding the dosing of vardenafil especially regarding the maximum daily dose. Patients should be advised to contact their healthcare provider for dose modification if they are not satisfied with the quality of their sexual performance with vardenafil or in the case of an unwanted effect. Inform patients that there have been rare reports of prolonged erections greater than 4 hours and priapism (painful erections greater than 6 hours in duration) for vardenafil and this class of compounds. In the event that an erection persists longer than 4 hours, the patient should seek immediate medical assistance. Bayer and GlaxoSmithKline announced that LEVITRA had been approved by the U.S.