Try:
http://www.chemistdirect.co.uk
I paid 28p for each pack of 30 tablets, £1.68 for 6 packs plus £2.95 P&P, they came within a few days of the order being placed and were sent recorded.
Unfortunately they have now gone up to 29p a pack but it's still pretty cheap despite the hefty rise.
Because they are "generic" and not branded they come in a lot cheaper than the chemist.
Zirtec and Benadryl contain Cetirizine Hydrochloride
http://www.chemistdirect.co.uk/30-da...s_1_10167.html
Claritin contains Loratadine
http://www.chemistdirect.co.uk/lorat...s_1_26054.html
http://www.chemistdirect.co.uk/aller...ys_1_1818.html
Piriton contains Chlorphenamine maleate, an alternative:
http://www.chemistdirect.co.uk/hayfe...e_1_10256.html
Non-drowsy ones etc may have different names, do your research and stock up.
For anyone who doesn't fancy this pop down to your local supermarket or chemist and you'll probably find similar unbranded options for a bit more than this but a lot less than Zirtec etc. You might have to ask them to get the cheap stuff from under the counter.
DISCLAIMER:
Obviously you should probably consult a doctor before randomly buying medication on the Internet or listening to advice from me.
For anyone with itchy eyes the hayfever drops work really well, pop one or two onto your lower eyelid and then have a bit of a blink, instant relief, a slight sting and then more relief for the day in my experience.
http://www.chemistdirect.co.uk/hayfe..._1_155338.html
Some of you may find this link useful:
http://www.chemistdirect.co.uk/pubic...abs_c_425.html