Can maybe someone share knowledge or guesses on the following questions:
Does the prolonged use of antihistamines cause long-term effects on mind or CNS?
Are there any known evidences of their influence of formation of CNS or personality when taken at a young age?
Generation-II antihistamines are said to be next to devoid of sedative effects since they selectively block just the H1-receptors. However, they are reportedly potentially mind-altering. How is this possible?