Loratadine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
- headache
- dry mouth
- nosebleed
- sore throat
- mouth sores
- difficulty falling asleep or staying asleep
- nervousness
- weakness
- stomach pain
- diarrhea
- red or itchy eyes
Some side effects may be serious. If you experience any of the following symptoms, stop taking loratadine and call your doctor immediately:
- rash
- hives
- itching
- swelling of the eyes, face, lips, tongue, throat, hands, arms, feet, ankles, or lower legs
- hoarseness
- difficulty breathing or swallowing
- wheezing