Hi Tigger,
Just read that you've training started training for your PPL. I'm as pleased as punch for you, especially since few of us have the imagination to do their PPL on something as wonderful as the Moth. I certainly didn't, although I wish I had now.
Good luck on your training. I'm sure the puke-thing will pass pretty quickly, even without the tablets. I had a similar problem during my first few hours, which I've now put down to simply feeling nervous about my lesson, rather than air-sickness per se. Never returned since, even after I moved on to aeros, etc.
Keep us posted on how you get on.
TW