Smart OTC Solutions
Best OTC Medicine For Allergies
(Pharmacist Guide)
The following are the over-the-counter products for allergies with pharmacist guidance to help you make the right selection.
Find the best match for your symptoms, then click the product name to learn more about it.
⭐ For nighttime symptoms, when allergies are severe, interfere with sleep, or allergies caused by insect bites or other triggers
Consider Diphenhydramine or Doxylamine, these are very effective in suppressing symptoms, but known for their sedative effect. Doxylamine is more sedative, and may last longer.
⭐ For a quick response, but you do not mind some drowsiness
Consider Cetirizine or Levocetirizine. They can be used for acute or chronic allergies like seasonal allergies, but with some drowsiness. Levocetirizine may be more effective.
⭐ For seasonal use with minimal drowsiness
Consider Fexofenadine or Loratadine. Fexofenadine has very low sedation risk and should be taken with water , while Loratadine provides steady daily relief with a slower onset for some people.
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* Benadryl® (Diphenhydramine)
A fast-acting antihistamine that provides short-term relief of allergy symptoms. It is strongly sedating and typically taken every 4–6 hours as needed.
Pharmacist Tips
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May cause significant drowsiness—avoid driving or operating machinery.
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Common side effects include dry mouth, blurred vision, and urinary retention, especially in older adults.
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Avoid combining with alcohol, other antihistamines, or sedating medications.
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Use caution if you have glaucoma or prostate enlargement.
Children’s Formulations Available
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Liquid (oral solution)
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Chewable tablets
* Unisom® (Doxylamine Succinate)
A sedating antihistamine with stronger and longer-lasting effects than diphenhydramine. Often used for nighttime allergy symptoms or when rest is needed.
Pharmacist Tips
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Take about 30 minutes before bedtime.
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May cause next-day drowsiness.
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Avoid combining with alcohol or other sedating medications.
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Possible side effects include dry mouth, constipation, blurred vision, and urinary retention.
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Use caution in older adults and those with glaucoma or prostate enlargement.
* Zyrtec® 24 Hour (Cetirizine)
A once-daily antihistamine that begins working within about 1 hour and provides strong relief of allergy symptoms.
Pharmacist Tips
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Take once daily at the same time each day.
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May cause mild drowsiness in some individuals.
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Avoid combining with alcohol or other sedating medications.
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Use caution in older adults and those with glaucoma or prostate enlargement.
Children’s Formulations Available
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Liquid (oral solution)
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Chewable tablets
* Xyzal® 24 Hour (Levocetirizine)
A targeted, second-generation antihistamine derived from cetirizine, providing 24-hour symptom control for allergies.
Pharmacist Tips
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Typically taken once daily in the evening (timing may be adjusted based on drowsiness).
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Generally low-sedating, but monitor your response.
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Avoid combining with alcohol or other sedating medications.
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Use caution in older adults and those with glaucoma or prostate enlargement.
Children’s Formulations Available
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Liquid (oral solution)
* Allegra® 24 Hour (Fexofenadine)
A non-drowsy antihistamine that provides 24-hour relief with minimal effects on alertness. It is more effective in controlling seasonal allergies, and not to be used for immediate allergy relief.
Pharmacist Tips
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Take only once daily at the same time.
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Avoid taking with fruit juices (orange, apple, grapefruit), which may reduce effectiveness.
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Considered non-drowsy for most people, but responses can vary.
Children’s Formulations Available
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Liquid
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Dissolvable tablets
* Claritin® 24 Hour (Loratadine)
A once-daily antihistamine that provides steady, 24-hour allergy relief with a low risk of drowsiness. It is more effective in long-term control, and less effective in an immediate allergic reaction.
Pharmacist Tips
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Take only once daily at the same time each day.
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Drowsiness is uncommon but possible, monitor your response.
Children’s Formulations Available
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Liquid
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Chewable tablets