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RyVent

Generic: carbinoxamine maleate

Verified·Apr 23, 2026
Manufacturer
Carwin Pharmaceutical Associates, LLC
NDC
15370-130
RxCUI
1795581
Route
ORAL
ICD-10 indication
L29.8

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About RyVent

What is this medication? RyVent is a prescription antihistamine that contains the active ingredient carbinoxamine maleate. It is primarily used to relieve symptoms associated with seasonal and year-round allergies, such as sneezing, runny nose, and itchy or watery eyes. The medication works by blocking histamine, a natural substance in the body that causes allergic reactions when a person is exposed to triggers like pollen, pet dander, or dust mites. Beyond respiratory allergies, RyVent is also prescribed to treat various skin-related allergic conditions, including hives, itching, and mild cases of swelling. It can be used to manage allergic reactions to blood or plasma and as an additional treatment alongside epinephrine for severe allergic reactions. Because it is an older type of antihistamine, it may cause drowsiness or sleepiness in some patients who take it.

Copay & patient assistance

Detailed copay and financial assistance information is not publicly available for this medication at this time. Please consult your pharmacist or the manufacturer's official patient support program for more details.

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Prescribing information

From the FDA-approved label for RyVent. Official source: DailyMed (NLM) · Label effective Jan 9, 2024

Indications and usage
INDICATIONS AND USAGE Carbinoxamine maleate is effective for the symptomatic treatment of: Seasonal and perennial allergic rhinitis. Vasomotor rhinitis. Allergic conjunctivitis due to inhalant allergens and foods. Mild, uncomplicated allergic skin manifestations of urticaria and angioedema. Dermatographism. As therapy for anaphylactic reactions adjunctive to epinephrine and other standard measures after the acute manifestations have been controlled. Amelioration of the severity of allergic reactions to blood or plasma.
Dosage and administration
DOSAGE AND ADMINISTRATION Carbinoxamine maleate is contraindicated in children younger than 2 years of age (see CONTRAINDICATIONS ). Carbinoxamine maleate should be taken on an empty stomach with water. DOSAGE SHOULD BE INDIVIDUALIZED ACCORDING TO THE NEEDS AND THE RESPONSE OF THE PATIENT. Carbinoxamine maleate dosage should be based on the severity of the condition and the response of the patient. The drug is well tolerated in adults in doses as high as 24 mg daily, in divided doses, over prolonged periods. On the other hand, some patients respond to as little as 4 mg daily. Clinical experience suggests the following dosage schedule: Usual Adult Dosage: 1 tablet (6 mg) 3 to 4 times daily
Contraindications
CONTRAINDICATIONS Carbinoxamine maleate is contraindicated in children younger than 2 years of age. Carbinoxamine maleate is contraindicated in nursing mothers. Carbinoxamine maleate is contraindicated in patients who are hypersensitive to the drug or on monoamine oxidase inhibitor therapy (see Drug Interactions ).
Warnings
WARNINGS Deaths have been reported in children less than 2 years of age who were taking antihistamines, including carbinoxamine-containing drug products, therefore, carbinoxamine maleate is contraindicated in children younger than 2 years of age (see CONTRAINDICATIONS ). Antihistamines should be used with considerable caution in patients with: narrow angle glaucoma, stenosing peptic ulcer, symptomatic prostatic hypertrophy, bladder neck obstruction, pyloroduodenal obstruction.
Drug interactions
Drug Interactions Monoamine oxidase inhibitors prolong and intensify the anticholinergic (drying) effects of antihistamines. Carbinoxamine maleate has additive effects with alcohol and other CNS depressants (hypnotics, sedatives, tranquilizers, etc.).
Adverse reactions
ADVERSE REACTIONS The most frequent adverse reactions are underlined: Body as a whole: Urticaria, drug rash, anaphylactic shock, photosensitivity, excessive perspiration, chills, dryness of mouth, nose and throat Cardiovascular: Hypotension, headache, palpitations, tachycardia, extrasystoles Hematologic : Hemolytic anemia, thrombocytopenia, agranulocytosis Central nervous system: Sedation , sleepiness , dizziness , disturbed coordination , fatigue, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, euphoria, paresthesia, blurred vision, diplopia, vertigo, tinnitus, acute labyrinthitis, hysteria, neuritis, convulsions Gastrointestinal: Epigastric distress , anorexia, nausea, vomiting, diarrhea, constipation Urogenital : Urinary frequency, difficult urination, urinary retention, early menses Respiratory: Thickening of bronchial secretions , tightness of chest and wheezing, nasal stuffiness Call your doctor for medical advice about side effects. Report side effects to 1-844-700-5011.
Use in pregnancy
Pregnancy Teratogenic Effects Pregnancy Category C Animal reproductive studies have not been conducted with carbinoxamine maleate. It is also not known whether carbinoxamine maleate can cause fetal harm when administered to a pregnant woman or can affect reproductive capacity. Carbinoxamine maleate should be given to a pregnant woman only if clearly needed.

Label text is reproduced as-is from the FDA-approved label. We do not paraphrase, summarize, or omit. Content above is for informational purposes only and is not medical advice. Always consult your prescribing clinician or pharmacist before making decisions about your medication.

Conditions we've indexed resources for

Click a condition to see copay cards, grants, and PA rules specific to it. For the full list of FDA-approved indications, see Prescribing information above.

Medicare Part D coverage

How RyVent appears across Medicare Part D plan formularies nationally. Source: CMS monthly Prescription Drug Plan file (2026-04-30).

Covered by plans

0%

7 of 5,509 plans

Most common tier

Tier 2

On 50% of covering formularies

Prior authorization required

0%

of covering formularies

TierFormularies on this tierShare
Tier 1 (preferred generic)1
50%
Tier 2 (generic)1
50%

Step therapy: 0% of formularies

Quantity limits: 0% of formularies

Coverage breadth: 2 of 65 formularies

How to read this:plans on the same formulary share tier + PA rules. Your specific plan's copay depends on (a) the tier above, (b) your plan's cost-share for that tier, (c) whether you're in the initial coverage phase or past the 2026 $2,000 out-of-pocket cap. For your exact plan, check its Summary of Benefits or log in to your Medicare.gov account. Copay cards don't apply to Medicare (federal law).

Prior authorization & coverage

PayerPAStep therapyCopay tier

Medicare Part D

Related drugs

How this page is sourced

  • Drug identity verified against openFDA NDC Directory.
  • Label text (when shown) originates from NLM DailyMed.
  • Copay and assistance URLs verified periodically; if you hit a broken link, tell us.