These are not this list the side effects of ingredient. Clinical studies can help shown that cetirizine at the recommended dosage has minor undesirable effects on the CNS, including somnolence, fatigue, dizziness and headache.
Possible side effects of Cetirinax include:
Cetirinax is used to treat diseases such as: Allergic Rhinitis, Urticaria.
You should consult with your physician if you feel that your heart rate is too low, a change in medication or dosage may be warranted in this situation.