Allergy & Sinus Allergy & Sinus Shop for allergy and sinus medication at Well.ca. We have allergy and sinus relievers for adults as well as childrens allergy and sinus medicine. We also carry nasal spray and treatments for allergy treatment and sinus relief. If you have seasonal allergies, skin allergies, cat allergies, poison ivy or pretty much any allergic reaction, you can count on products like the Benadryl Allergy Liquid Elixir or Reactine Allergy Extra Strength 24 Hour Tablets for quick and effective relief. If youre lactose intolerant, look here for remedies. On the other hand, if you have a sinus infection or a sinus headache, we can help with that too! Try Sudafed Sinus Advance with Ibuprofen or Sinutab Extra Strength Sinus for relief of sinus pain and headache. Browse some of our most popular allergy and sinus brands like Drixoral, Benadryl, Reactine, or Tylenol.