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It is fine to obtain repeat supplies of Cialis online, but only after an initial diagnosis and assessment. Men should have an erectile dysfunction diagnosis from a GP before obtaining medication online. All six trials were randomized controlled studies, both of which addressed randomized and double-blind processes.

Additionally, tadalafil is metabolized by CYP3A4 in the liver. Dosage adjustments are necessary in patients taking potent CYP3A4 inhibitors such as ritonavir, ketoconazole, and itraconazole (see Dosage and Drug Interactions). It can also interact with many medicines, particularly nitrates (used in some types of heart disease) and blood pressure medicines. If you take nitrates in any form, or are on treatment for pulmonary hypertension, you should not take tadalafil.

You don’t have to plan around the pill and can have sex anytime between doses. The general rule is to wait 36 hours between doses but there are also daily pills available. Cialis can be taken daily, providing constant treatment for ED for people who have sex frequently. Viagra is always taken as needed, usually an hour before having sex. There’s no research available on whether Cialis or Viagra will give you harder erections.

Depending on your general health, you may be able to take a daily dose of 5mg&nbsp