Things I have tried to increase TH:
PGA - Changed the flavors, but no increase
Increase Nicotine - Works every time
Increase PV Wattage - Works every time
Menthol - Yep, works on me, but I'm not a menthol fan
Mint Flavoring - Works, but cannot vape them all day
Cinnamon Flavoring - Works, but cannot vape it all day
Tobacco Absolute - Works, but not everyone's "cup of tea"
Things I have not tried:
Qhit from FA - Read that it increases throat scratchiness greatly and takes too much to get it to work for me
Capsian (sic? Oil from hot peppers) - Do not want to inhale it, but some folks swear by it
Things I have used many times, but just today learned that some use it for increased TH:
More Thicker Smoother (MTS) Vape Wizard from FA.