It is also used in combination nighttime cold medicines, such as Alka-Seltzer Plus Night Cold Formula, Tylenol Cold and Cough Nighttime, and NyQuil. Doxylamine can cause serious side effects, ...
including the common cold and arthritis. However, you must be careful not to exceed the maximum daily dose. An overdose of Tylenol can cause liver toxicity that could be fatal. Adults can usually take ...