- allergic reactions
- atopic dermatitis, or itchy skin
- motion sickness
- vomiting
- coughing
- anxiety
- When histamines attach to H-1 receptors in the body, it causes the blood vessels to widen which leads to swelling and itchiness.
- 25 mg capsules
- 25 mg tablets
- 50 mg capsules
- lung disease
- glaucoma
- enlarged prostate
- hyperthyroidism
- heart failure
- high blood pressure
- gastrointestinal obstruction
- urinary tract obstruction
- barbiturates
- epinephrine
- heparin
- tranquilizers
- severe sedation
- coma
- seizures
- slow breathing