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Things to be careful of herbal viagra Patients who experience erections lasting 4 hours or more should be instructed to seek immediate medical assistance. If priapism is not treated immediately, penile tissue damage and permanent loss of potency may result.Do not take Levitra if you are taking medications containing nitrates, alpha–blockers. Do not consume alcohol along with the drug. Do not drive or handle heavy machinery until you know how to react to the drug.

an investment strategy. (If the division between capital-intensiveMost patients that experienced side effects such as myocardial infarction, sudden cardiac death, stroke, palpitations, and tachycardia had preexisting cardiovascular risk factors. Many of these events were reported to occur during or shortly after sexual activity.[Ref] cialis blood pressure Always take CIALIS exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure.

If possible, avoid coadministration with CYP3A4 inhibitors; if coadministration is essential, long-term therapy is indicated, or strong CYP3A4 inhibitors are required, modify or hold dose New York Heart Association Class 2 or greater heart failure in the last 6 months

Elderly males 65 years of age and older have higher vardenafil plasma concentrations than younger males (18 – 45 years), mean Cmax and AUC were 34% and 52% higher, respectively. Phase 3 clinical trials included more than 834 elderly patients, and no differences in safety or effectiveness of Levitra 5, 10, or 20 mg were noted when these elderly patients were compared to younger patients. However, due to increased vardenafil concentrations in the elderly, a starting dose of 5 mg Levitra should be considered in patients ≥65 years of age [see Clinical Pharmacology (12.3)]. viagra information Endpoint 13.5 19.5 13.6 22.5 While similar to its competitors, sildenafil (Viagra) and vardenafil (Levitra), Cialis is known as 'the weekend pill' because its effects last for up to 36 hours.

8 users found this comment helpful. Did you? Yes No Report as inappropriate There have been reports of heart attack, stroke, irregular heartbeat, bleeding in the brain or lungs, high blood pressure, and sudden death in men who took sildenafil for erectile dysfunction. Most, but not all, of these people had heart problems before taking sildenafil. It is not known whether these events were caused by sildenafil, sexual activity, heart disease, or a combination of these and other causes.Talk to your doctor about the risks of taking sildenafil.