Medical Editor: John P. Cunha, DO, FACOEP Last updated on RxList: 8/4/2022
Drug Description

What is RyClora and how is it used?

RyClora (dexchlorpheniramine maleate liquid) is an antihistamine used to treat perennial and seasonal allergic rhinitis, vasomotor rhinitis, allergic conjunctivitis due to inhalant allergens and foods, mild uncomplicated allergic skin manifestations of hives and angioedema, amelioration of allergic reactions to blood or plasma, dermographism, and as therapy for anaphylactic reactions adjunctive to epinephrine and other standard measures after the acute manifestations have been controlled.

What are side effects of RyClora?

Side effects of RyClora include:


Each 5 mL (Teaspoonful) Contains

Dexchlorpheniramine Maleate, USP 2 mg

Dexchlorpheniramine Maleate, USP, an antihistamine agent, is a white, odorless crystalline powder that is freely soluble in water. The molecular formula is C16H19ClN2· C4H4O4, designated chemically as (+)-2-[p-Chloro-α- [2-(dimethylamino)ethyl]benzyl] pyridine maleate (1:1).

RYCLORA™ (dexchlorpheniramine maleate) Structural Formula Illustration

M.W. = 390.86

Inactive Ingredients

Citric acid, cherry flavoring, FD&C Red No. 40, glycerin, menthol, methylparaben, propylene glycol, propylparaben, purified water, sodium citrate dihydrate, and sugar.

Indications & Dosage


Perennial and seasonal allergic rhinitis

Vasomotor rhinitis

Allergic conjunctivitis due to inhalant allergens and foods

Mild, uncomplicated allergic skin manifestations of urticaria and angioedema

Amelioration of allergic reactions to blood or plasma


As therapy for anaphylactic reactions adjunctive to epinephrine and other standard measures after the acute manifestations have been controlled.



Recommended Dosage

Adults and Children 12 years of age and older: 2 mg (1 teaspoonful)

Children 6 to 11 years: 1 mg (1/2 teaspoonful)

Children 2 to 5 years: 0.5 mg (1/4 teaspoonful)

Doses are generally given every 4 to 6 hours.


RYCLORA™ Oral Solution is supplied as a red colored, cherry flavored liquid in the following sizes:

4 fl oz (118 mL), NDC 15370-150-04
16 fl oz (473 mL), NDC 15370-150-16
0.7 fl oz (20mL), NDC 15370-150-99 (as physician sample)

Recommended Storage

Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature].

Dispense in a tight, light-resistant container as defined in the USP, with child-resistant closure.

Manufactured for: Carwin Pharmaceutical Associates, LLC, Hazlet, NJ 07730. Revised: Mar 2018


Could I Be Allergic? Discover Your Allergy Triggers See Slideshow
Side Effects & Drug Interactions


  1. General: Urticaria, drug rash, anaphylactic shock, photosensitivity, excessive perspiration, chills, dryness of mouth, nose and the throat.
  2. Cardiovascular System: Hemolytic anemia, thrombocytopenia, agranulocytosis.
  3. Hematologic System: Hemolytic anemia, thrombocytopenia, agranulocytosis.
  4. Nervous System: Sedation, sleepiness, dizziness, disturbed coordination, fatigue, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, euphoria, paresthesias, blurred vision, diplopia, vertigo, tinnitus, acute labyrinthitis, hysteria, neuritis, convulsions.
  5. G.I. System: Epigastric distress, anorexia, nausea, vomiting, diarrhea, constipation.
  6. G.U. System: Urinary frequency, difficult urination, urinary retention, early menses.
  7. Respiratory System: Thickening of bronchial secretions, tightness of chest and wheezing, nasal stuffiness.

Call your doctor for medical advice about side effects. You may voluntarily report side effects to FDA at 1-800-FDA-1088. Questions or comments? Call Carwin Pharmaceutical Associates, LLC at 1-844-700-5011.


MAO inhibitors prolong and intensify the anticholinergic (drying) effects of antihistamines.

Warnings & Precautions


Antihistamines should be used with considerable caution in patients with:

Narrow angle glaucoma
Stenosing peptic ulcer
Pyloroduodenal obstruction
Symptomatic prostatic hypertrophy
Bladder neck obstruction

Use In Children

In infants and children, especially, antihistamines in overdosage may cause hallucinations, convulsions, or death.

As in adults, antihistamines may diminish mental alertness in children. In the young child, particularly, they may produce excitation.

Use In Pregnancy

Experience with this drug in pregnant women is inadequate to determine whether there exists a potential for harm to the developing fetus.

Use With CNS Depressants

RYCLORA™ Oral Solution has additive effects with alcohol and other CNS depressants (hypnotics, sedatives, tranquilizers, etc.).

Use In Activities Requiring Mental Alertness

Patients should be warned about engaging in activities requiring mental alertness such as driving a car or operating appliances, machinery, etc.

Use In The Elderly (Approximately 60 Years Or Older)

Antihistamines are more likely to cause dizziness, sedation, and hypotension in elderly patients.


RYCLORA™ Oral Solution has an atropine-like action and, therefore, should be used with caution in patients with:

History of bronchial asthma
Increased intraocular pressure Hyperthyroidism
Cardiovascular disease

Overdose & Contraindications


Antihistamine overdosage reactions may vary from central nervous system depression to stimulation. Stimulation is particularly likely in children. Atropine-like signs and symptoms—dry mouth, fixed, dilated pupils, flushing, and gastrointestinal symptoms may also occur.

If vomiting has not occurred spontaneously the patient should be induced to vomit. This is best done by having the patient drink a glass of water or milk after which the patient should be made to gag. Precautions against aspiration must be taken, especially in infants and children.

Saline cathartics, such as milk of magnesia, draw water into the bowel by osmosis and therefore, are valuable for their action in rapid dilution of bowel content.

Stimulants should not be used.

Vasopressors may be used to treat hypotension.


Use In Newborn Or Premature Infants

This drug should not be used in newborn or premature infants.

Use In Nursing Mothers

Because of the higher risk of antihistamines for infants generally and for newborns and prematures in particular, antihistamine therapy is contraindicated in nursing mothers.

Use In Lower Respiratory Disease

Antihistamines should NOT be used to treat lower respiratory tract symptoms including asthma.

Antihistamines are also contraindicated in the following conditions:

Hypersensitivity to dexchlorpheniramine maleate or other antihistamines of similar chemical structure
Monoamine oxidase inhibitor therapy (See DRUG INTERACTIONS)

Clinical Pharmacology


Dexchlorpheniramine maleate is an antihistamine with anticholinergic (drying) and sedative side effects. Antihistamines appear to compete with histamine for cell receptor sites on effector cells.

Medication Guide


No information provided. Please refer to the WARNINGS AND PRECAUTIONS section.

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Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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