Taking Allegra (Fexofenadine 120 mg) together with Levipil (Levetiracetam 500 mg) is generally considered safe as there are no known significant interactions between these two medications.

• No major interactions: Fexofenadine, an antihistamine, does not typically interfere with Levetiracetam, which is used to control seizures.
• Consult your doctor: Individual health factors or other medications might affect safety, so check with your prescribing neurologist or pharmacist.
• Monitor for side effects: Watch for any unusual symptoms such as increased drowsiness, dizziness, or allergic reactions and report them promptly.
• Follow prescribed doses: Do not change doses on your own and take both medications exactly as directed.

If you want, I can explain how these medications work or what side effects to watch for in more detail. Meanwhile, please consult your neurologist to confirm this combination is appropriate for your specific health needs.