Yeah had that also I still prefer Cetrizines, have tried flax but too costly and not as powerful as Cetrinzines but they are good if your body has adapted to say Cetrizines.
I would rank these tablets in my personal experience as best of the best after 20 years of bless free hayfever
1:Cetrizine -for price/performance last a good 4-8hrs
2:Beandryl Acrivastine relief- faster acting but most pricey, but 4-8hr lasting but good if other tablets stop or don't kick in
3:Fex tablets-took 1-2 weeks for tablets to kick in and work, high priced last 4-7hrs
4:loretadine tablets-cheap but can at times take few days to kick in, last good 4-8hrs
5
aracetomal tablets- These may not reduce hayfever directly but assist in swelling internally in the nose, throat and mouth areas making the
hayfever side effects low.
Overall Cetrizines and Loretadine are the most common and cheapest tablets, if they don't work give it few days for them to kick in or for a quick fix I recommend the Acrivastine Benadryl tablets roughly £7-8 quid for 2 packs of 24 from boots, takes 15 minutes to work and suggest 8hr last but ive found it
last 3hrs at worst but average 4-8hrs.