Claritin-D 24-Hour (loratadine and pseudoephedrine) is an over-the-counter medication indicated to alleviate symptoms associated with hay fever or seasonal allergies. This medication contains two active ingredients: an antihistamine (loratadine) and a decongestant (pseudophedrine). Claritin-D 24-Hour is administered once daily as an oral tablet and should be taken as directed with a full glass of water. Discuss Claritin-D 24-Hour side effects with your doctor or pharmacist if they arise during treatment.
Skin Irritation
While taking Claritin-D 24-Hour, you may develop minor skin irritation as a side effect of treatment. Your skin can appear red, dry or irritated and may begin to itch. You may also develop abnormal sensations of warmth or tingling across your skin. Such side effects are typically minor and will subside with recurrent use of this medication. Contact your doctor if you develop abnormal skin bruising while taking Claritin-D 24-Hour.
Dizziness
You can experience mild dizziness as a side effect of this medication. If this occurs, you can feel unstable when you attempt to stand up or walk. Dizziness and lightheadedness can also contribute to side effects of blurred vision or headache in certain patients. During episodes of dizziness, remain seated until this sensation passes to prevent further injury from tripping or falling. Side effects of severe dizziness accompanied by anxiety, confusion or hallucination, should be immediately reported to your doctor.
Stomach Upset
After taking a dose of Claritin-D 24-Hour, you can experience mild to moderate stomach upset, explain health professionals at Drugs.com, a peer-reviewed website that provides information on currently marketed drugs. The effects of stomach upset can include nausea, stomach pain or decreased appetite. Some patients can also experience difficult bowel movements--a condition called constipation. You can also develop dry mouth after taking this medication, which can lead to a sore throat or increased thirst.
Insomnia
During treatment with Claritin-D 24-Hour, you can experience sleeping difficulties as a side effect of treatment. You may find that you have trouble falling asleep or wake up frequently throughout the night (insomnia). These sleep disturbances can cause daytime sleepiness to occur in some patients.
Restlessness
Use of this medication can cause restlessness or excitability to occur in some patients--especially children, warn health professionals at Drugs.com. You can experience increased energy or may feel abnormally nervous or anxious after taking a dose of Claritin-D 24-Hour. These side effects can also contribute to sleeping difficulties. Contact your doctor immediately if you experience heart-related side effects, such as an increased or irregular heartbeat, in addition to sensations of restlessness or nervousness while taking this medication.
