Clearing up a few points that may not be widely known...
When an antihistamine has "-D" after it (ie Zyrtec-D), it only means that a decongestant has been added, usually sudafed. Sudafed can only be bought behind the counter for the last several years because of it's use in making meth. It may be cheaper to buy the sudafed and the antihistamine separately. I don't buy the ones with sudafed added because sudafed makes me shaky and feel light headed.
Suphedrine was mentioned, it is also a decongestant like sudafed, but not as effective for most people. It is not behind the counter because even though it is related to sudafed, it is slightly different different. They call it a mirror molecule. It has exactly the same chemical elements, but is put together differently. Just like when you look in the mirror and if you are right handed you appear left handed. They even name the molecules left and right handed.
Benadryl(diphenhydramine is the generic) is the most effective in general, but is also the main ingredient in many sleeping pills for a good reason.
Allegra, Zyrtec, and others aren't as prone to making you drowsy, but again they are less effective. They also are most effective after days or even a week or more of constant use, so don't give up too quickly.
Many people like the prescription's like Allegra, but Zyrtec works better for me(there is a generic). The prescription nasal sprays are popular, and I have tried them, but they are not for me for a variety of reasons.
As was mentioned, trial and error. No two people react the same to medications or combinations of medications.
Zyrtec is my favorite because it is also pretty effective on food allergies, and I am blessed with food allergies worse than my hayfever. Even on Zyrtec a normal piece of beef jerky will guarantee several open sores under my tongue within 24 hours. Trust me, they are not pleasant. Avoiding MSG, which is why beef jerky kills me, helps a lot. Pepperoni is a killer also. Just throwing these in as things to look out for if you are sensitive to food allergies.
I am not a doctor or pharmacist, and nothing in this infomercial is meant to treat or cure any disease...
