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2. Tadalafil: Your Ultimate Guide to Dosages, Side Effects & More

   www.aol.com/tadalafil-ultimate-guide-dosages...

   Tadalafil is available in several dosages, from a minimum dosage of 2.5mg (milligrams) all the way up to a 20mg per tablet, the maximum dose of tadalafil in 24 hours. ... For Daily Tadalafil ...

3. Is It Safe to Take Cialis Daily? - AOL

   www.aol.com/safe-cialis-daily-115900442.html

   Daily Cialis Dosage. Cialis for daily use comes in two dosages: 2.5mg and 5mg. That’s about a quarter of what’s prescribed for as-needed use, where Cialis typically comes in two different ...

4. Tadalafil - Wikipedia

   en.wikipedia.org/wiki/Tadalafil

   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]

5. Macitentan/tadalafil - Wikipedia

   en.wikipedia.org/wiki/Macitentan/tadalafil

   Macitentan/tadalafil, sold under the brand name Opsynvi, is a fixed dose combination medication used for the treatment of pulmonary arterial hypertension. [2] It contains macitentan , an endothelin receptor antagonist (ERA); and tadalafil , a phosphodiesterase 5 (PDE5) inhibitor .

6. Cialis vs. Viagra: How Are They Different? - AOL

   www.aol.com/cialis-vs-viagra-different-175700354...

   Tadalafil or generic Cialis can be taken either on demand or as a daily ED medication. It came onto the market a little later than Viagra, first receiving approval as a prescription ED medication ...

7. Vardenafil - Wikipedia

   en.wikipedia.org/wiki/Vardenafil

   Vardenafil's indications and contraindications are the same as with other PDE5 inhibitors; it is closely related in function to sildenafil citrate (Viagra) and tadalafil (Cialis). 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 ...