I feel so dizzy and weird after taking 50mg baclofen please help

Hi i took 50mg yesterday and in 2 hours i started feeling really really dizzy i needed to lay down the whole day and even when laying i was extremly dizzy and im nauseous and i cant focus with both my eyes its weird its like staring i keep dissociating please help This is my first time taking big dose i never take baclofen everyday only 10mg here and 20 mg there but it would be like once or twice a week