Yes and yes. The regular formula works better but it does make you tired. Even with the non drowsy I find that you have to power through the first hour then it's fine. It takes about an hour to kick in, just keep moving. We take it at breakfast with food and by the time we gear up, get to the park, get through the gates and onto our first ride we're good to go. Just drink a lot of water as it is dehydrating.
Even with Dramamine, Simpsons was a tough one for me. Not sick but it gave me a headache. Probably because it was later in the day and I think the Dramamine was wearing off. Transformers also gave me a headache (again late in the day). We were fine on Mummy, Minions, Gringotts, Forbidden Journey, Spiderman, MIB... Loved them all and so glad we tried the Dramamine.