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2. How to Pay the Lowest Price for Cialis & Tadalafil - AOL

   www.aol.com/lifestyle/pay-lowest-price-cialis...

   The price of generic tadalafil can vary based on the dosage, but most versions of generic tadalafil cost $10 to $13 per tablet. When used daily, generic tadalafil can be less than $3 per pill ($79 ...

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

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

   For once-daily use, tadalafil is prescribed at a lower dosage of either 2.5mg or 5mg per day. As with other ED medications, there’s no “best” dosage of tadalafil for all.

4. Got Headaches from Viagra or Cialis? Here's Why & How to Treat It

   www.aol.com/got-headaches-viagra-cialis-heres...

   Sildenafil, tadalafil and other treatments for ED all belong to a class of medications called phosphodiesterase type 5 or PDE5 inhibitors, which dilate the blood vessels that supply blood to the ...

5. 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]

6. 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 ...

7. Finasteride/tadalafil - Wikipedia

   en.wikipedia.org/wiki/Finasteride/tadalafil

   Finasteride/tadalafil, sold under the brand name Entadfi, is a fixed-dose combination medication used for the treatment of benign prostatic hyperplasia (BPH). [1] [2 ...