I believe understanding the problem is the first step to managing it.
Great! Sounds like a bunch of gebbrish, so what does it REALLY mean?
To break it down: eyes, inner ear (hairs) and the brain are having a business dinner to discuss what you (human) are currently up to. The eyes and the inner ear are having a philosophical discussion. Eyes say you are standing still and not moving (because you are on a boat and the boat is moving, not you) the inner ear says you are moving, boat or not, you are moving in space and time, there are for, you ARE moving. The argument escalates into a fight, your brain gets a major migraine...and starts to loose it's mind, pun-intended. While the brain can't decide which side to take, it throws up all over the dinner table in hopes of shutting up the arguing parties.
We, humans, are the main problem. We always think we know what's best for us...at first sight of seasickness most people close their eyes, lye down, focus on themselves or do nothing. They disregard any advice and shut down. This only makes matters worse, when what one should be doing is fully acknowledging and embracing the movement of their body, in space and time and connecting it to the eye sight. And here is where the personal opinion comes to play.
My husband has never been seasick in his life, so his sympathy is very limited. He believes that if you are out on the water long and often enough, you would just “get used to it”. I'm on the other hand sympathizing with the mystery that seasickness is and I speak from experience. I'm lucky enough to have only gotten lightly seasick a few times, but I have not been “ocean storm and high seas tested” to truly know my limits. But every time I have felt “funny” I was able to “snap out of it” by standing up, forcing my body to balance on my feet and making an extra effort to show my mind I AM MOVING. I definitely think I have learned to manage my seasickness, but I don't think I will ever get “used to it” enough to say “I have crossed to the Lucky side”. So you can try to use the power of your mind to help you manage it, but if all fails...what about the good all Dramamine?
But why is drowsiness a usual side effect? Histamine, acting via H1 receptors in the central nervous system, increases wakefulness. Therefore, antihistamines that block the binding of histamine to H1 receptors and which enter the central nervous system cause drowsiness.
Sounds scary, well not so much. I'm personally really against taking any kind of drugs, but if you have been seasick before you know that feeling is just one of the worst things ever, so if you take these drugs a few times a year to be able to enjoy your time on a boat, it's probably worth it.
The trick I have learned in my whale watching school is to take Bonine (Not Drammamine..it's too drowsy) the night before going out right before bed. And if you are super sensitive, take one more with breakfast. This will assure that the drug is well within your system and you will not be nearly as drowsy on the boat. It is not what the directions on the package say, but it works for many people I know. But obviously, make your own educated decisions.
I hope this helps some of you to understand the Miss “Misery” a little bit better and not fight the urge to “Move freely about the cabin”:-)
Good luck and stay seasick FREE out there!