I am assuming you mean, can you just take an antihistamine just before you go somewhere, where your allergies might be activated.
Yes, you can. It might be better to take it at least an hour or so before so that the antihistamine can be absorbed and it starts working. If you don't have the allergen in your surroundings daily (and you don't suffer from allergy symptoms) then you don't need to take your antihistamines daily.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Posted 14 Feb 2010 • 1 answer
Posted 24 Jul 2011 • 1 answer
Posted 22 Mar 2012 • 5 answers
Posted 30 Jul 2013 • 1 answer
Posted 13 Jun 2015 • 1 answer