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Triprolidine

Triprolidine is an antihistamine used in several oral liquid products to temporarily relieve symptoms of hay fever (allergic rhinitis) and other upper respiratory allergies.

Brand names Pediaclear ChildrensFlonase NighttimeChildrens PediaClear PDHistexHISTEX PD Drops +5 more
OTC Forms 2
Dr. Brian Staiger, PharmD, BCPS
Reviewed by Last reviewed Aug 22, 2026 Content updated Oct 2, 2026
🧬 Where this information comes from Click to expand

The clinical label records used on this page are FDA-filed Structured Product Labeling (SPL) retrieved through openFDA. We identified 6 clinical label sets within the page’s selected clinical scope after exact ingredient or ingredient-combination matching and applicable route/form matching. Forms, routes, brands, labelers, strengths, and NDC product-record counts are built separately from matching FDA National Drug Code Directory records. The linked DailyMed document is a representative official source for verification, not the page’s only clinical source. View the linked label on DailyMed →

How we combine label and product data →
✓No current FDA shortage listed · checked Oct 3, 2026
Triprolidine at a glance The quick version — the full detail is in the Patient Information Guide below.
Dr. Brian Staiger, PharmD, BCPS
The Pharmacist’s Take By · Clinical pharmacist · Written

Triprolidine is an older, sedating antihistamine that blocks histamine to ease sneezing, runny nose, itchy nose or throat, and itchy, watery eyes from hay fever. It is usually a second choice behind newer non-drowsy antihistamines, has been on the U.S. market since about 2003, and is available generically. Most people tolerate it well, but drowsiness is the effect people notice most, and young children can turn excitable instead. Alcohol, sedatives and tranquilizers deepen that drowsiness, so avoid them and skip driving until you know how it affects you, and do not use it at all if you have emphysema, chronic bronchitis, glaucoma or prostate-related trouble urinating.

Clinical pearls

  • Flonase Nighttime tablets contain triprolidine, not the steroid in Flonase nasal spray, so they cause the same drowsiness.
  • Use only the dropper packed with the product, and never use that dropper for another medicine.
  • Ask a doctor before giving it to children under 6, and dose from that exact product's own label.
  • Check with a health professional before using it if you are pregnant or breastfeeding.
How you get itOver the counter
Comes asOral solution, Tablet
Earliest FDA record1977
Companies listing it with the FDA11
FDA label last updatedAug 10, 2026
FDA’s strongest warning (boxed)None on the label

Patient information guide — a plain-language walkthrough of Triprolidine, written from its FDA label.

What Triprolidine is used for

▾

Triprolidine is an antihistamine found in several oral liquid products used to temporarily relieve allergy symptoms. Supported uses across the available products include:

  • Runny nose caused by hay fever (allergic rhinitis) or other upper respiratory allergies
  • Sneezing caused by hay fever or other upper respiratory allergies
  • Itching of the nose or throat caused by hay fever or other upper respiratory allergies
  • Itchy, watery eyes caused by hay fever or other upper respiratory allergies

These uses are supported by Childrens PediaClear PD, Histex, HISTEX PD Drops, HISTEX PD Drops New Formulation, HISTEX PDX Drops, and Miclara LQ — all oral liquid formulations.

Triprolidine dosage

▾

All supported triprolidine products are taken by mouth as an oral liquid. Doses are generally taken every 4 to 6 hours as needed, and you should not exceed the maximum number of doses allowed in a 24-hour period — this varies by product, so always follow the directions on your specific label.

  • Childrens PediaClear PD: Always use the enclosed dropper; children under 6 should see a doctor first
  • HISTEX PD Drops New Formulation: Always use the enclosed dropper; children under 6 should consult a doctor
  • Miclara LQ and Histex: Measured by teaspoon or milliliter; children under 6 should consult a doctor

Do not use the enclosed dropper for any other medication. If you miss a dose, simply take the next one when needed — do not double up.

Dosing details from the FDA-approved label

From the Triprolidine prescribing information (“Dosage and Administration”). Doses are set by your prescriber for your product, condition, kidney function and age — never change a dose on your own.

  • Triprolidine Hydrochloride Syrup: Adults & Children 12 years of age or older
    • 2.67 mL (2.5 milligrams) every 4 to 6 hours, or as directed by a doctor
    • Maximum: not to exceed 10.67 mL (10 milligrams) in 24 hours
    • use only the enclosed dropper
  • Triprolidine Hydrochloride Syrup: Children 6 to under 12 years of age
    • 1.33 mL (1.25 milligrams) every 4 to 6 hours, or as directed by a doctor
    • Maximum: not to exceed 5.33 mL (5 milligrams) in 24 hours
    • use only the enclosed dropper
  • Triprolidine Hydrochloride Syrup: Children under 6 years of age
    • Consult a doctor
  • HISTEX PD Drops: Adults & Children 12 years of age or older
    • 2 mL (2.5 mg) every 4 to 6 hours or as directed by a doctor
    • Maximum: not to exceed 8 mL (10 mg) in 24 hours
    • use only the enclosed dropper
  • HISTEX PD Drops: Children 6 to under 12 years of age
    • 1 mL (1.25 mg) every 4 to 6 hours or as directed by a doctor
    • Maximum: not to exceed 4 mL (5 mg) in 24 hours
    • use only the enclosed dropper
  • Miclara LQ: Adults and children 12 years of age and older
    • 2 teaspoonfuls (10 mL) every 4 to 6 hours or as directed by a doctor
    • Maximum: not to exceed 8 teaspoonfuls (40mL) in 24-hour period
  • Miclara LQ: Children 6 to under 12 years of age
    • 1 teaspoonful (5 mL) every 4 to 6 hours or as directed by a doctor
    • Maximum: not to exceed 4 teaspoonfuls (20mL) in a 24-hour period
  • Histex Syrup: Adults and Children 12 years of age and older
    • 1 teaspoonful (5 mL) every 4 to 6 hours, or as directed by a doctor
    • Maximum: not to exceed 4 teaspoonfuls (20 mL) in 24 hours
  • Histex Syrup: Children 6 to under 12 years of age
    • ½ teaspoonful (2.5 mL) every 4 to 6 hours, or as directed by a doctor
    • Maximum: not to exceed 2 teaspoonfuls (10 mL) in 24 hours
  • Childrens PediaClear PD: Children 6 to under 12 years
    • 2 mL every 6 hours, or as directed by a doctor
    • Maximum: not to exceed 4 doses in 24 hours
    • use only with enclosed dropper
Read the label’s full dosing text

Directions do not exceed recommended dosage. use only the enclosed dropper do not use enclosed dropper for any other drug product. AGE DOSE Adults & Children 12 years of age or older: 2.67 mL (2.5 milligrams) every 4 to 6 hours, not to exceed 10.67 mL (10 milligrams) in 24 hours, or as directed by a doctor. Children 6 to under 12 years of age: 1.33 mL (1.25 milligrams) every 4 to 6 hours, not to exceed 5.33 mL (5 milligrams) in 24 hours, or as directed by a doctor. Children under 6 years of age: consult a doctor.

Read the full Dosage and Administration section on DailyMed →

Triprolidine side effects

▾

Common side effects

  • Drowsiness
  • Excitability, especially in children

When to get medical help

  • Stop use and ask a doctor if new symptoms occur
  • Seek emergency help or call Poison Control immediately if an overdose is suspected

Triprolidine is generally well tolerated, but it can cause:

  • Drowsiness — the most common effect; use caution driving or using machinery
  • Excitability — this can happen especially in children, even though drowsiness is more typical in adults

Stop use and contact a doctor right away if new or unexpected symptoms appear, or call Poison Control immediately if you suspect an overdose.

Triprolidine warnings and precautions

▾
  • Drowsiness: This medication can make you sleepy. Avoid driving, operating heavy machinery, or other activities requiring alertness until you know how it affects you.
  • Breathing problems: Do not use if you have emphysema or chronic bronchitis — it may make breathing harder.
  • Glaucoma: Do not use if you have glaucoma, as this medication can worsen it.
  • Enlarged prostate: Do not use if you have trouble urinating due to an enlarged prostate gland.
  • Children: Children may become excitable rather than drowsy. Children under 6 should only use this medication under a doctor's direction.
  • Pregnancy and breastfeeding: Ask a health professional before using.

Triprolidine interactions

▾

A few things can interact with triprolidine and make it less safe or increase side effects:

  • Alcohol: Increases drowsiness — avoid alcoholic drinks while taking this medication
  • Sedatives and tranquilizers: These also increase drowsiness when combined with triprolidine — ask your doctor before using them together

Not a complete list. The label covers the interactions the manufacturer studied or reported, and our own interaction database does not cover every medicine either. Bring your full medication list, including vitamins and herbal products, to your pharmacist.

Before taking Triprolidine

▾
  • Do not use if you have emphysema or chronic bronchitis
  • Do not use if you have glaucoma (a condition causing increased pressure in the eye)
  • Do not use if you have an enlarged prostate gland causing trouble urinating
  • Tell your doctor if you are taking sedatives or tranquilizers before starting this medication
  • Pregnant or breastfeeding? Ask a health professional first
  • Children under 6 years old: do not use without first consulting a doctor

Triprolidine overdose

▾

If too much triprolidine is taken accidentally, seek professional medical help or contact a Poison Control Center right away — do not wait for symptoms to appear. Keep this and all medications out of reach of children.

How to store Triprolidine

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Store at 15°-30° C (59°-86° F). Dispense in a tight, light-resistant container with a child-resistant cap.

Written from the FDA-approved label with AI and reviewed by our pharmacy team. How we use AI →

Triprolidine: pharmacist answers to common questions

Quick, plain-English answers to the questions patients ask most about Triprolidine — the kind of thing our pharmacy team would talk through with you at the counter.

What is triprolidine actually used for?

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Triprolidine helps relieve the common, uncomfortable symptoms of hay fever and other upper respiratory allergies — things like a runny nose, sneezing, itchy or watery eyes, and itching in your nose or throat. It's available in several oral liquid products, including Childrens PediaClear PD, Histex, and Miclara LQ, among others. It doesn't cure allergies, but it can make you feel a lot more comfortable while symptoms are flaring.

Will this make me drowsy?

▾
Yes, drowsiness is a real possibility with triprolidine, and it's something to take seriously. Avoid driving, operating machinery, or doing anything that needs sharp focus until you know how it affects you. Alcohol, sedatives, and tranquilizers all make the drowsiness worse, so avoid those while you're taking this medication. Interestingly, some children actually get more excitable rather than sleepy — something to watch for if you're giving it to a child.

Can I give this to my young child?

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For children under 6 years old, you should check with a doctor before giving any triprolidine product. The labels for these products don't include dosing for that age group without a doctor's guidance. For children between 6 and 11, there are specific doses listed on each product — always use the exact dropper or measuring tool that comes with the product, and don't exceed the recommended amount in a 24-hour period.

Are there conditions where I shouldn't take this at all?

▾
Yes — if you have emphysema, chronic bronchitis, glaucoma, or trouble urinating due to an enlarged prostate, you should not take triprolidine without talking to a doctor first. These conditions can be made worse by antihistamines like this one. If you're not sure whether any of these apply to you, it's always worth a quick check with your pharmacist or doctor.

Can I take this if I'm pregnant or breastfeeding?

▾
The labels for these products say to ask a health professional before using triprolidine if you're pregnant or breastfeeding. It's not automatically off-limits, but it's important to get personalized advice from your doctor or midwife before starting it, since they can weigh the benefits and any potential risks for your specific situation.

What should I do if I accidentally take too much?

▾
If you or someone else takes more than the recommended amount, don't wait to see how you feel — contact a Poison Control Center or seek professional medical help right away. This is especially important for children, so keep all medications stored safely out of their reach. Acting quickly is always the right move with a suspected overdose.

Is Triprolidine available over the counter?

▾
Yes. The Triprolidine products listed with the FDA are sold over the counter, without a prescription (the oral solution and tablet forms). Follow the package directions. Your pharmacist can tell you which product is right for you.

When was Triprolidine first available?

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The earliest FDA record we hold for Triprolidine is from 1977: its first approval in Drugs@FDA or its earliest product listing in the NDC Directory, whichever is older. Many older medicines were in use before their first formal FDA approval, so this is the earliest date on record, not necessarily when Triprolidine was first used.

Who makes Triprolidine?

▾
11 companies list Triprolidine products in the FDA's NDC Directory, including Allegis Pharmaceuticals, LLC, Westminster Pharmaceuticals, LLC, GM Pharmaceuticals, INC. That count includes repackagers and distributors as well as manufacturers, so fewer companies actually make it; the label on your bottle names the one that supplied yours.

Answers drafted from the FDA-approved label with AI and reviewed by our pharmacy team. How we use AI →

More about Triprolidine on HelloPharmacist

Detailed data & references for Triprolidine Forms & strengths, pricing, billing codes, manufacturers, safety reports and sourcing — the data behind the page. Most people can stop here. Each section below opens on a tap.

Triprolidine forms and strengths (how it comes)

Triprolidine is available in 2 forms. Different forms and brands can have different approved uses, doses, schedules, and directions. Follow the instructions for your exact product, and do not switch forms without guidance from your prescriber or pharmacist.

Oral solution

By mouth
Brands Childrens PediaClear PD Histex HISTEX PD Drops HISTEX PD Drops New Formulation HISTEX PDX Drops Miclara LQ Triprolidine HCl Drops
How this form is used
What it may be used for
  • Childrens PediaClear PD: temporarily relieves runny nose, sneezing, itching of the nose or throat, and itchy, watery eyes due to hay fever or upper respiratory allergies
  • Histex: temporarily relieves runny nose, sneezing, itching of the nose or throat, and itchy, watery eyes due to hay fever or upper respiratory allergies
  • HISTEX PD Drops New Formulation: temporarily relieves runny nose, sneezing, itching of the nose or throat, and itchy, watery eyes due to hay fever or upper respiratory allergies
  • Miclara LQ: temporarily relieves runny nose, sneezing, itching of the nose or throat, and itchy, watery eyes due to hay fever or upper respiratory allergies
Important instructions
  • Childrens PediaClear PD: use only the enclosed dropper; do not use it for any other drug product; children under 6 should see a doctor before use
  • HISTEX PD Drops New Formulation: use only the enclosed dropper; do not use it for any other drug product; children under 6 should consult a doctor
  • Miclara LQ: take every 4 to 6 hours; do not exceed the recommended number of doses in 24 hours; children under 6 should consult a doctor
  • Histex: take every 4 to 6 hours; do not exceed the recommended number of doses in 24 hours; children under 6 should consult a doctor
Available strengths 5 strengths
19 FDA-listed product records ⓘ

Tablet

By mouth
Brands Flonase
Available strengths 1 strength
1 FDA-listed product record ⓘ

Triprolidine on the U.S. market: products, makers and brands

How Triprolidine appears in the FDA’s National Drug Code Directory — including its dosage forms, strengths, brand names, manufacturers, and FDA-listed product records. These are directory records, not sales or prescription volume.

11 companies list 24 Triprolidine product records with the FDA, mostly as oral solution, tablet; the earliest marketing or approval year on record is 1977. Brand names on the directory include Pediaclear Childrens, Flonase Nighttime, Childrens PediaClear PD and 7 more; the rest are generics.

2
Dose forms ⓘ
11
Labelers (makers, repackagers, distributors)
9
Brand names
24
FDA-listed product records ⓘ
1977
Earliest FDA record ⓘ

FDA-listed product records by dose form (tablet variants merged) — FDA National Drug Code Directory. Record counts are not sales or prescription volume.

Also listed with the FDA, not a patient dose form: Powder (4) — bulk drug substance sold to compounders/manufacturers and multi-item kits. These aren’t counted in the dose-form total above.

Allegis Pharmaceuticals, LLC29%
Westminster Pharmaceuticals, LLC17%
GM Pharmaceuticals, INC13%
Divi's Laboratories Limited8%
Rugby Laboratories8%
Brandywine Pharmaceuticals, LLC4%
Other makers21%

Share of FDA-listed product records by manufacturer — FDA National Drug Code Directory. Record counts are not sales or prescription volume.

How widely Triprolidine is used (Medicaid data)

A general measure of how commonly Triprolidine is prescribed, based on Medicaid — one of the largest public drug programs. The figure below is prescriptions filled in Q1–Q4 2025, summed across every form and brand of the drug.

Think of this as a proxy for how widely Triprolidine is used, drawn from freely available public data. Medicaid is just one program — these numbers don’t include Medicare, other government coverage, or commercial and cash-pay prescriptions, so real-world use is higher than what’s shown here.

256,126
Medicaid prescriptions filled (Q1–Q4 2025)
$3.8M gross Medicaid reimbursement (before mandatory rebates — net cost is lower)

How commonly is Triprolidine prescribed? Of the 1,599 medications we measure, Triprolidine ranks #353 by Medicaid prescriptions — more than 78% of them.

Where Triprolidine ranks among the drugs we measure · Q1–Q4 2025 · neighbors ±5

Utilization by Triprolidine product

Pick a product to see its own Medicaid numbers. Each chip is one clinical product — a specific strength & dosage form as defined by RxNorm — with brand-name and generic versions combined.

The 1.25 mg/mL oral solution is the most-dispensed Triprolidine product — about 66% of these Medicaid prescriptions.

triprolidine hydrochloride 1.25 MG/ML Oral Solution Most dispensed

168,366 Medicaid prescriptions (Q1–Q4 2025) 66% of Triprolidine prescriptions shown $2.8M gross reimbursement (before rebates) ≈ $16 per prescription (gross)

Summed across the 1 of 3 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 1926926

triprolidine hydrochloride 0.938 MG/ML Oral Solution

63,751 Medicaid prescriptions (Q1–Q4 2025) 25% of Triprolidine prescriptions shown $747,139 gross reimbursement (before rebates) ≈ $12 per prescription (gross)

Summed across the 1 of 5 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 1491649

triprolidine hydrochloride 0.625 MG/ML Oral Solution

15,849 Medicaid prescriptions (Q1–Q4 2025) 6% of Triprolidine prescriptions shown $257,283 gross reimbursement (before rebates) ≈ $16 per prescription (gross)

Summed across the 1 of 5 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 1428927

triprolidine hydrochloride 0.5 MG/ML Oral Solution

8,160 Medicaid prescriptions (Q1–Q4 2025) 3% of Triprolidine prescriptions shown $88,131 gross reimbursement (before rebates) ≈ $11 per prescription (gross)

Summed across the 1 of 1 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 1490671

Shares are of the Medicaid prescriptions shown here. Product grouping follows RxNorm (the National Library of Medicine’s drug terminology), so “one product” means one strength & dosage form regardless of manufacturer. Dollar figures are gross Medicaid reimbursement before mandatory rebates — rebates (often large, especially for brand-name drugs) are confidential, so actual net cost to Medicaid is lower than shown.

Source: Medicaid State Drug Utilization Data (CMS), aggregated by generic ingredient — summed across every NDC (all brands, strengths, salt forms and dosage forms) of Triprolidine, and across all states and both fee-for-service and managed-care claims. A general popularity signal; it excludes Medicare, commercial insurance and cash prescriptions, so it is not total U.S. use. Based on the 4 of 14 listed Triprolidine NDCs with Medicaid activity.

Compare Triprolidine products

A representative set of FDA-listed product records for Triprolidine — across manufacturers, strengths, and dosage forms, grouped by form with each product’s manufacturer and how the FDA approved it. The same medicine may be made and packaged by different companies, so a single drug can have many directory entries. (It’s also why a refill can look different — a new shape, color, or box — even though it contains the same medication.)

Showing 24 of 24 products — FDA National Drug Code Directory. See every product, package size and price: browse all 24 Triprolidine NDCs →

Triprolidine recall history

A recall is when a specific batch of a medicine is pulled from the market — usually a manufacturing issue, not a problem with the drug itself. Class I is most serious, Class III least.

The FDA’s enforcement reports list no Triprolidine recalls since July 2021.

✅No Triprolidine recalls on record since July 2021

Source: FDA enforcement (recall) reports, via openFDA; our copy was last updated Sep 24, 2026.

RxNorm Concept Web — From Ingredient to Every Form and Strength

This page starts with one ingredient concept (IN). The branches below show its dose-form concepts (SCDF), then the available clinical drug and strength concepts (SCD). Combination products remain separate concepts with their own pages.

Ingredient (IN) Triprolidine RxCUI 10849 3 dose forms · 7 strengths
  1. Dose form (SCDF) Chewable Tablet RxCUI 1939353 No current FDA listing
    Clinical drug / strength (SCD) hydrochloride 1.25 MG RxCUI 1939354
  2. Dose form (SCDF) Oral Tablet RxCUI 374249 In current FDA listings
    Clinical drug / strength (SCD) hydrochloride 2.5 MG RxCUI 1099694

Look up RxCUI 10849 in the RxCUI Atlas →

RxNorm is the U.S. National Library of Medicine’s normalized drug vocabulary. Its concept hierarchy can include forms that are not currently marketed; the status on each branch compares that concept with current FDA listings. RxCUIs identify vocabulary concepts, not individual packages or manufacturers.

Triprolidine brand names

Triprolidine is sold under 10 brand names in the FDA directory — Pediaclear Childrens, Flonase Nighttime, Childrens PediaClear PD, Histex and others. A brand and its generic contain the same active ingredient; the brand name belongs to one company's product.

Pediaclear Childrens Flonase Nighttime Childrens PediaClear PD Histex HISTEX PD Drops HISTEX PD Drops New Formulation Flonase HISTEX PDX Drops Miclara LQ Triprolidine HCl Drops

Who makes Triprolidine: manufacturers and labelers

11 companies list Triprolidine products with the FDA. By number of product records, the largest are Allegis Pharmaceuticals, LLC, Westminster Pharmaceuticals, LLC, GM Pharmaceuticals, INC. Labelers include manufacturers and repackagers; the product in your bottle depends on which one your pharmacy stocks.

Allegis Pharmaceuticals, LLC 7 Westminster Pharmaceuticals, LLC 4 GM Pharmaceuticals, INC 3 Divi's Laboratories Limited 2 Rugby Laboratories 2 Brandywine Pharmaceuticals, LLC 1 GlaxoSmithKline Consumer Healthcare Holdings (US) LLC 1 Hikal Limited 1 Key Therapeutics 1 Malladi Drugs & Pharmaceuticals Limited 1 Monarch PCM, LLC 1

Triprolidine drug class (RxNorm)

Triprolidine belongs to the Other antihistamines for systemic use class.

Drug family (ATC) Other antihistamines for systemic use

Classified by RxNorm RxClass — the U.S. National Library of Medicine's standardized drug-classification service (Established Pharmacologic Class from the FDA, the ATC drug family from the WHO, and mechanism of action). Reference only, not medical advice.

Sources for this Triprolidine page

Core label, product, RxNorm, safety, and utilization data on this page come from the sources identified below. AI-written, editorial, and licensed sections are labeled separately.

📄
FDA-filed drug labels (SPL) Uses, dosing, warnings & side effects from SPL records retrieved through openFDA; the linked representative set can be verified on DailyMed. ✓ Linked label effective Aug 10, 2026
🏭
Forms, brands & labelersAggregated from ingredient-matched FDA National Drug Code Directory product records for Triprolidine.
📈
Real-world reportsThe FDA Adverse Event Reporting System (FAERS), served through openFDA.
🚨
Recalls & shortagesopenFDA drug-enforcement reports and the FDA drug-shortage database.
🧾 Clinical label set — FDA-filed SPL labels retained for Triprolidine after exact ingredient or ingredient-combination matching and applicable route/form matching
Clinical labels in scope
6
NDC products indexed
24
Distinct labelers/manufacturers represented
11
Linked representative label ⓘ
Westminster Pharmaceuticals, LLC
Linked label effective
Aug 10, 2026
Composite sections available
7
Linked SPL Set ID
a9f01760-e335-4410-a9b8-8edce2841270
Linked SPL Document ID
2ef4d962-1c92-48e3-bf24-200a275b3d08
Open the linked representative label on DailyMed ↗
NDC package records associated with this linked SPL 1

How this page is built

HelloPharmacist combines public FDA and NLM records and does not author the underlying clinical facts. The plain-language sections are written with AI from the FDA-approved label text and reviewed by our pharmacy team before publication. Westminster Pharmaceuticals, LLC is the representative DailyMed label linked for verification and dates. This is general education, not medical advice: always talk to your doctor or pharmacist about your own medicines. How we build and review drug pages →