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Tadalafil (10 mg and 20 mg) had no clinically significant effect on exposure (AUC) to S-warfarin or R-warfarin (CYP2C9 substrate), nor did tadalafil affect changes in prothrombin time induced by warfarin. In case you notice any side effects not listed above, contact your doctor or pharmacist. cialis for daily use review

CIALIS contains lactose. Patients with rare hereditary problems of galactose intolerance, the Lapp lactase deficiency or glucose-galactose malabsorption should not take this medicinal product.Do not take Levitra with similar medicines such as avanafil (Stendra), sildenafil (Viagra), or tadalafil (Cialis). These medicines also have other brand names (Adcirca, Revatio) that are used to treat a condition called pulmonary arterial hypertension.

Related discussions what happens when women take viagra Most men have occasional times when they cannot get an erection. For example, you may not get an erection so easily if you are tired, stressed, distracted, or have drunk too much alcohol. For most men it is only temporary, and an erection occurs most times when you are sexually aroused. Do not be alarmed by the following list of possible side effects. You may not experience any of them.

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viagra prices When taking more than one medication, it is important to make sure there are no drug interactions. Viagra (sildenafil) is safe to take with most other medications. However, it can have a serious interaction with nitrates. If you have a medication that you place under your tongue when you feel chest pain, it is probably nitroglycerin, and should not be combined with Viagra or the other two erectile dysfunction medications, Cialis (tadalafil) and Levitra (vardenafil). Sometimes, nitrates are also given on a daily basis, once or twice a day. The combination of medications can cause a serious drop in blood pressure. A study looked at the effects of taking 100 mg of Viagra in a single dose, which resulted in a decrease of 8.4/5.5 mmHg in blood pressure. This decrease was seen at one to two hours after taking the medication. Other blood pressure medications reduce blood pressure, but not in the same sudden type of reaction. Physicians should advise patients of the potential for Viagra to augment the blood pressure lowering effect of alpha-blockers and anti-hypertensive medications. Concomitant administration of Viagra and an alpha-blocker may lead to symptomatic hypotension in some patients. Therefore, when Viagra is co-administered with alpha-blockers, patients should be stable on alpha-blocker therapy prior to initiating Viagra treatment and Viagra should be initiated at the lowest dose [see Warnings and Precautions (5.5)].Dosage Forms and Strengths

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