Fildena is a pharmaceutical drug, not a software or computer application, so it cannot be “implemented” on personal computers in the traditional tech sense. Fildena is a brand name for a medication that contains sildenafil citrate, the same active ingredient found in Viagra. It is manufactured by Fortune Healthcare in India and is primarily used to treat erectile dysfunction (ED) in men.

The first introduction of sildenafil citrate as a treatment for ED dates back to 1998, when the U.S. FDA approved Viagra (produced by Pfizer). Fildena entered the market later as a generic alternative, after Pfizer's patent began to expire in different countries. Fildena likely became available for online purchase in the early 2010s, as generic ED medications began appearing widely on international online pharmacies. It is now commonly ordered via personal computers through various websites.

In summary, while Fildena isn’t a software to be implemented on PCs, its online availability and purchase via PCs began in the early 2010s, aligning with the rise of global e-pharmacies selling generic medications.