My throat suddenly felt itchy, i tried warm water but ddnt work? what kind of antihistamines that wont make me sleepy? need help.

Several: Claritin (loratadine) and allegra( or the store equivalents) are the ones that are the most non drowsy but zyrtec works best for some but might cause just a bit of tiredness

Allegra (fexofenadine): Allegra and Claritin (loratadine) are not supposed to make you drowsy although I do have a few patients who get drowsy from any kind of antihistamine. If the itching persists for more than a couple of weeks. You should consult an allergist. Certain fruits can cause throat itching due to cross-reaction to pollen allergy.