It is a diuretic and might help remove the extra fluid, eventhough it won't increase circulation. The first medication that was suggested to me for sleep and pain relief was nortriptyline. I take it at bedtime.
You didn't specify prime time or American shows or cable or syndication or anything, so generally speaking, the American soap opera, Guiding Light may be the TV show with the most scripted episodes at 18,262 episodes. Technically it's more since it was on the radio for 15 years prior it moving to TV.
The comedy series will now run for an unprecedented 14 seasons, making it tied with Ozzie & Harriet, a comedy-variety show that ran from the '50s through the '60s on US television. This now makes It's Always Sunny In Philadelphia tied with Ozzie & Harriet as the longest-running comedy series in television history. The next closest contender is Two And A Half Men, which ran for twelve seasons whilst Cheers, Frasier, Married... With Children and Happy Days all ran for eleven seasons.