Allergy Relief 24 Hour Side Effects
Generic name: loratadine
Medically reviewed by Drugs.com. Last updated on Oct 3, 2022.
Note: This document contains side effect information about loratadine. Some dosage forms listed on this page may not apply to the brand name Allergy Relief 24 Hour.
Applies to loratadine: oral capsule liquid filled, oral solution, oral syrup, oral tablet, oral tablet chewable, oral tablet disintegrating.
Serious side effects
Along with its needed effects, loratadine (the active ingredient contained in Allergy Relief 24 Hour) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur while taking loratadine:
Incidence not known
For Healthcare Professionals
Applies to loratadine: oral capsule, oral syrup, oral tablet, oral tablet chewable, oral tablet disintegrating.
Very common (10% or more): Headache (up to 12%)
Common (1% to 10%): Sedation/somnolence
Very rare (less than 0.01%): Dizziness, convulsion
Common (1% to 10%): Nervousness
Uncommon (0.1% to 1%): Insomnia
Common (1% to 10%): Fatigue
Common (1% to 10%): Dry mouth
Uncommon (0.1% to 1%): Increased appetite[Ref]
Frequency not reported: Increased frequency of urination, urine discoloration, menstruation delay[Ref]
Very rare (less than 0.01%): Tachycardia, palpitation
Very rare (less than 0.01%): Abnormal hepatic function[Ref]
Frequency not reported: Myalgia[Ref]
Frequently asked questions
- Why do you take Claritin with Neulasta?
- Can you take 10mg of loratadine twice a day?
- Can you give loratadine to dogs?
- Can you take antihistamines when pregnant?
More about Allergy Relief 24 Hour (loratadine)
Related treatment guides
1. "Product Information. Claritin (loratadine)." Schering Corporation (2002):
2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
3. Cerner Multum, Inc. "Australian Product Information." O 0
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.