Compare Olopatadine vs. Claritin

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Pataday
(Olopatadine)

Claritin
(Loratadine)

Coming soon.Treats allergy symptoms. Claritin (Loratadine) is a once-daily allergy relief medication that doesn't make you feel sleepy.
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Reviews & ratings
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Have you used Pataday (Olopatadine)?
Worth itNot sureNot worth it
Reviews for Claritin (Loratadine)
74%
+74% vs. Pataday (Olopatadine)
38%
+38% vs. Pataday (Olopatadine)
6%
6% vs. Pataday (Olopatadine)
1514 reviews
Have you used Claritin (Loratadine)?
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Side effects
OlopatadineClaritin

We haven’t found good data for Olopatadine side effects.

FDA side effect reports for Olopatadine »

We haven’t found good data for Claritin side effects.

FDA side effect reports for Claritin »
How it works
OlopatadineClaritin
Coming soon.Claritin (Loratadine) is an antihistamine. It blocks histamine, a chemical that causes congestion, itching, and other allergic reactions. Antihistamines can also make you sleepy, but Loratadine is a low-drowsiness version.
Type of medication
OlopatadineClaritin
Coming soon.
Antihistamine
2nd generation
Prescription or OTC
Available as
OlopatadineClaritin
  • Eye drops
  • Nasal spray
  • Pill
  • Chewable tablet
  • Orally disintegrating tablet
  • Liquid
Used for (click to learn more)
OlopatadineClaritin
  • Allergic conjunctivitis Seasonal allergic rhinitis
Risk factors for serious side effects
OlopatadineClaritin
Coming soon.
    • Age 65 or older
    • Taking with alcohol
    • Taking other medicines that make you less alert
    • History of phenylketonuria (PKU)
    Detailed Claritin (Loratadine) risks & warnings »
    Pregnancy

    Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

    The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.

    Food
    OlopatadineClaritin
    No food related info.
    • Claritin (Loratadine) contains aspartame (phenylalanine). People who have phenylketonuria (PKU) can't break down the amino acid phenylalanine. It builds up and causes serious medical problems. If you have PKU, don't use this product.
    Sleep
    OlopatadineClaritin
    No sleep related info.
    • Can make you feel sleepy, so take it at bedtime if needed.
    Upsides and benefits
    OlopatadineClaritin
    Coming soon
    • Relieves allergy symptoms like sneezing and runny nose just as well as other antihistamines, but with less sedation (drowsiness).
    • Also treats hives and itchy skin.
    • Side effects are rare and usually mild.
    • Available over the counter without a prescription.
    • Comes as a tablet, liquid, or quick-dissolving tablet.
    • Can provide quick relief of allergy symptoms for both kids and adults.
    • Okay to take with most other medications because it doesn't have many interactions.
    Downsides and risks
    OlopatadineClaritin
    Coming soon
    • For some people, its effectiveness on treating allergies wears off over time.
    • Some people find that other more sedating antihistamines (like Zyrtec or Benadryl) are more effective for them.
    • If you have daily allergy symptoms, a prescription nasal steroid spray might be better for you long-term.
    • Not for kids under 2 years.
    • The Reditabs version contains aspartame (phenylalanine).
    Tips from our pharmacists for people taking the medication
    OlopatadineClaritin
    Coming soon
    • Take it only once a day.
    • Starts working in a few hours.
    • Can make you feel sleepy, so take it at bedtime if needed.
    • Avoid possible side effects by drinking plenty of non-caffeinated liquids.
    • If you need to use it for more than a few weeks, talk with your doctor about trying a nasal steroid instead, which might work better for you long-term.
    • Using an antihistamine eye drop might work better to help itchy or watery eyes.
    Learn more
    More about OlopatadineSide effectsReviews & ratingsFDA package insert
    Have you used Pataday (Olopatadine)?
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    More about ClaritinSide effectsReviews & ratingsAlternativesFDA package insert
    Have you used Claritin (Loratadine)?
    Worth itNot sureNot worth it