Does this medication have side effects?
The following side effects are associated with Allegra Oral:
Infrequent side effects:
| Throat Irritation | Less Severe |
| Sinus Irritation and Congestion | Less Severe |
| Dry Mouth | Less Severe |
| Indigestion | Less Severe |
| Infection caused by a Virus | Less Severe |
| Painful Periods | Less Severe |
| Backache | Less Severe |
| Muscle Pain | Less Severe |
| Drowsiness | Less Severe |
| Dizzy | Less Severe |
| Low Energy | Less Severe |
| Rash | Less Severe |
| Head Pain | Less Severe |
| Feel Like Throwing Up | Less Severe |
| Throwing Up | Less Severe |
Rare side effects:
| Middle Ear Infection | Severe |
| Acute Infection of the Nose, Throat or Sinus | Severe |
| Hives | Severe |
| Life Threatening Allergic Reaction | Severe |
| Allergic Reaction caused by a Drug | Severe |
| Nightmares | Less Severe |
| Feeling Restless | Less Severe |
| Earache | Less Severe |
| Itching | Less Severe |
| Chronic Trouble Sleeping | Less Severe |
| Fever | Less Severe |
| Pain | Less Severe |
| Cough | Less Severe |
| Stomach Cramps | Less Severe |
| Nervous | Less Severe |
