When in doubt, consult with your health care provider at Fronske. Antihistamines frequently produce dizziness or drowsiness, so avoid driving while taking them. Sometimes antihistamines produce a marked drying effect. If your nose or throat seems to get too dry and feel irritated, it is a sign to reduce the dosage. Decongestants Decongestants help relieve sinus stuffiness and reduce the pressure sensation in the ears.
Decongestants come in the form of oral medication, nose drops and nasal sprays.
Possible side effects of decongestants are nervousness and insomnia. If this occurs reduce your dosage or stop taking the drug. Important Note Only take decongestants and antihistamines under advisement by your health care provider if you have high blood pressure, heart disease, diabetes, glaucoma or thyroid disease. These drugs may worsen your condition. Use a cough suppressant if you have a dry cough.