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Plus, they come in discreet packaging and are personalized to meet your exact needs. Other treatments are available. We consider these drugs to be among the top 10 ED pills, but there are many ...
Sildenafil, sold under the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon. [9]
Safety is an essential factor to consider before using any type of medication, and treatments for ED are no exception. Luckily, ED is a treatable issue with a number of well-known options.
Daily dose tadalafil is available at a dosage of 2.5mg or 5mg tablets. There might be several reasons to go with daily dosages instead of the dosages where you take the medication as needed.
Tadalafil is an annulated 2,5-diketopiperazine. [25] It is also a 1,2,3,4-tetrahydro-β-carboline. Tadalafil can be synthesized starting from (D)-tryptophan methyl ester and piperonal via a Pictet–Spengler reaction. This is followed by condensations with chloroacetyl chloride and methylamine to complete the diketopiperazine ring: [26]
The difference between the vardenafil molecule and sildenafil citrate is a nitrogen atom's position and the change of sildenafil's piperazine ring methyl group to an ethyl group. Tadalafil is structurally different from both sildenafil and vardenafil. Vardenafil's relatively short effective time is comparable to but somewhat longer than ...
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