By Cindy Diep, The University of Texas at Austin College of Pharmacy
Curist delivers medicines to your door at a fraction of the price of traditional brands. We hope everyone stays safe and healthy during this time.
Allergies are immune system responses to substances, known as allergens, that are usually harmless to most people. This article examines the effectiveness, side effects, and overall suitability of Claritin and Zyrtec, two different antihistamines, for treating allergies, helping people select the best option for their specific needs.
Are Claritin and Zyrtec the Same Thing? What are the Differences Between Zyrtec vs Claritin (cetirizine vs loratadine)?
Claritin and Zyrtec are both antihistamines that help relieve allergy symptoms, but they are not the same thing. Claritin contains the active ingredient loratadine, while Zyrtec contains the active ingredient cetirizine. Cetirizine (Zyrtec) typically takes effect more quickly, often within an hour, whereas loratadine (Claritin) may take up to three hours to start working. Additionally, Zyrtec has a slightly higher chance of causing drowsiness in some individuals compared to Claritin, though both Zyrtec and Claritin are generally considered non-drowsy compared to older 1st generation antihistamine medications.
Can I Switch from Claritin to Zyrtec (loratadine to cetirizine)? Can I Switch from Zyrtec to Claritin (cetirizine to loratadine)?
Yes, you can switch between Claritin (loratadine) and Zyrtec (cetirizine), but it is not advised to take both medications simultaneously. If you are switching from one allergy medication to the other, make sure to wait at least 12 hours after taking the 12-hour version of Claritin, or 24 hours after taking the 24-hour version of either Claritin or Zyrtec.
When is the Best Time of Day to Take Zyrtec? When is the Best Time of Day to Take Claritin?
Zyrtec (cetirizine) may cause mild drowsiness in some individuals, so it is best to take it in the evening or before bed. If you do not experience drowsiness when taking antihistamines, you can take Zyrtec at any time that is convenient, but it is recommended to take it at the same time each day for consistency. Claritin (loratadine) is less likely to cause drowsiness, so it can generally be taken at any time during the day, but like Zyrtec, it is most effective when taken at the same time each day.
Is Claritin or Zyrtec Safer for Kids? Is It Safe for My Child to Take Zyrtec Every Day? Is It Safe for My Child to Take Claritin Every Day?
Both Claritin (loratadine) and Zyrtec (cetirizine) are generally safe for children when used as directed. Zyrtec is approved for children aged 6 months and older for the liquid form and 2 years and older for the tablet form. Claritin is approved for children 2 years and older. Both Zyrtec and Claritin are typically safe for daily use in children to manage chronic allergies, so both can be used long-term. Daily use is especially common during allergy seasons or for year-round allergy management.
What Forms of Claritin and Zyrtec are Available for Kids? What Forms of Claritin and Zyrtec are Available for Adults?
For children, both Zyrtec (cetirizine) and Claritin (loratadine) come as syrup/liquid, dissolvable tablet, or chewable tablet forms.
For adults, Claritin is available in tablets, dissolvable tablets, liquid-filled capsules, chewable tablets, or syrup/liquid. Zyrtec is available in tablets, liquid-filled capsules, dissolvable tablets, or chewable tablets.
Can My Child Take Claritin and Zyrtec Together? Can I Take Claritin and Zyrtec Together?
No, it is not recommended to take Claritin (loratadine) and Zyrtec (cetirizine) together, for both adults and children. Since both are antihistamines that work in similar ways, taking them together increases the risk of side effects. If one medication is not effective, it is better to switch to the other after waiting 12 or 24 hours, rather than taking both at the same time.
Can I Take Claritin in the Morning and Zyrtec at Night, or Zyrtec in the Morning and Claritin at Night?
No, it is not recommended to switch between Claritin (loratadine) and Zyrtec (cetirizine) between morning and night. Both Claritin and Zyrtec are typically marketed as 24-hour dosage forms, so taking them together within the same 24-hour period can increase the risk of side effects without providing additional symptom relief. Since both are antihistamines that work similarly, it is best to choose one and take it once daily. If the chosen medication is not effective, you can switch to the other the next day.
Which Is Better for Seniors and Adults Over 65 to Treat Allergies: Claritin vs Zyrtec?
Claritin (loratadine) is often a better choice for older adults because it has a lower chance of causing drowsiness or confusion. These side effects can increase the risk of falls, which is a major concern for older individuals. Because it makes users less drowsy, Claritin may help older adults stay more alert and stable throughout the day. Additionally, Claritin has fewer anticholinergic side effects, such as dry mouth or urinary retention, which can be a concern in older adults. By choosing Claritin, older adults may experience fewer of these uncomfortable or dangerous side effects.
Is Claritin or Zyrtec Stronger to Treat Allergies?
Zyrtec (cetirizine) is generally seen as stronger and more potent than Claritin (loratadine) for treating allergy symptoms. It usually works faster, often within an hour, and may potentially provide quicker relief. While both medications are considered highly effective, the best choice depends on how each person responds to them. Some may find Zyrtec works better for them, while others prefer Claritin.
Which is Better, Zyrtec or Claritin? Which is Better for Kids, Claritin or Zyrtec?
The choice between Zyrtec (cetirizine) and Claritin (loratadine) depends on personal preference and individual response. People may find one more effective than the other or experience different side effects. Zyrtec is slightly more likely to cause drowsiness, while Claritin is generally considered non-drowsy, but this can vary from person to person. Zyrtec tends to work faster, usually within an hour, while Claritin may take a bit longer to take effect. For children, Zyrtec is approved for those as young as 6 months, while Claritin is approved for children 2 years and older. The best way to determine which works best for you is through trial and error, switching after the duration of the dosage, and sticking with the one that offers the most relief with the fewest side effects.
