The Professor on Viagra - Periodic Table of Videos [P_G1QQranei]

The Professor on Viagra - Periodic Table of Videos [P_G1QQranei]

| 1h 28m 28s | Video has closed captioning.

We get our hands on a pure sample of Sildenafil citrate, known to many as Viagra, and discuss a few properties of this "blockbuster" drug. More links in description below ↓↓↓ Support Periodic Videos on Patreon: A video on every element: More at Follow us on Facebook at And on Twitter at From the School of Chemistry at The University of Nottingham: Periodic Videos films are by video journalist Brady Haran: Join Brady's mailing list for updates and extra stuff --- #penis sheaths enlargements #penis enlargement without pill #enhance male performance #maca male enhancement pills #mavrick male enhancement