What medicines would you recommend for hardcore allergies?

Hardcore? Not sure what you mean by hardcore. If you are refering to anaphylaxis then epinephrine is the treatment of choice. Bad allergic rhinitis is treated with OTC antihistamines, daily intranasal steroid or antihistamine sprays, saline rinses, etc. Allergy shots are also an option. Avoidance of triggers is important as well but see an Allergist first to determine exactly what you are allergic to.