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Dorzolamide HCl 20 mg/mL Solution/ Drops — NDC 50090-2406-00 package photo
Label image from the product's FDA listing (DailyMed) — may show a different pack size or an older label revision.

Dorzolamide HCl 20 mg/mL Solution/ Drops — NDC 50090-2406-0 (Billing 50090-2406-00)

by A-S Medication Solutions · 1 BOTTLE, DROPPER in 1 CARTON / 10 mL in 1 BOTTLE, DROPPER

This is a package of Dorzolamide HCl 20 mg/mL Solution/ Drops from A-S Medication Solutions, marketed since Jun 2009 and currently FDA-listed. It is this product's only package size.

NDC 50090-2406-00
🏷️ FDA NDC (as labeled) 50090-2406-0 billing pads the package segment with a zero
Rx only Generic On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 50090-2406-0
Product NDC 50090-2406
11-digit billing NDC 50090240600
NCPDP billing unit ML — per mL (volume)
RxCUI 310015
UNII QZO5366EW7
Application # ANDA090143
SPL Set ID 91df460c-b896-4600-9d33-e499b49ba1b6
Established class (EPC) Carbonic Anhydrase Inhibitor
Mechanism of action Carbonic Anhydrase Inhibitors
DEA schedule Non-controlled
Marketing category ANDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2009-06-25
Route OPHTHALMIC
Dosage form SOLUTION/ DROPS
Substance DORZOLAMIDE HYDROCHLORIDE
TE code (Orange Book) AT · RLD · RS

Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification

GPI-14 86802340102020
GPI class Dorzolamide HCl
GCN Seq No 023513
GCN 33380
HICL code 009896
Ingredient (HICL) Dorzolamide Hcl
HIC1 code Q
Therapeutic class — broad (HIC1) Ear/Eye/Nose/Rectum/Topical/Vagina/Other
HIC2 code Q6
Therapeutic class — intermediate (HIC2) Ophthalmic Preparations
HIC3 code Q6G
Therapeutic class — specific (HIC3) Miotics And Other Intraocular Pressure Reducers
AHFS code 52:40.12.00
AHFS class Carbonic Anhydrase Inhibitors (52:40)
FDB label name DORZOLAMIDE HCL 2% EYE DROPS
FDB brand name Dorzolamide Hcl
Legend status F — Federal legend — prescription drug or device
Quick answers
  • GSN (GCN sequence number): 023513
  • GCN: 33380
  • GPI-14 (Medi-Span): 86802340102020
  • HICL (First Databank): 009896
  • AHFS class code: 52:40.12.00
  • RxCUI (RxNorm): 310015
Why two NDCs? The FDA registers this code as 50090-2406-0 — a 5-4-1 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the package segment → 50090-2406-00. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

RxNorm drug class

This medicine belongs to the Carbonic Anhydrase Inhibitor class.

Pharmacologic class Carbonic Anhydrase Inhibitor
Drug family (ATC) Carbonic anhydrase inhibitors
How it works Carbonic Anhydrase Inhibitors
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

Clinical

Label name DORZOLAMIDE HCL 2% EYE DROPS Ingredient Dorzolamide Hcl
📖 What it is MedlinePlus · NLM

Ophthalmic dorzolamide is used to treat glaucoma, a condition in which increased pressure in the eye can lead to gradual loss of vision. Dorzolamide is in a class of medications called carbonic anhydrase inhibitors. It works by decreasing the pressure in the eye.

Read the full MedlinePlus article ↗
📗 Our plain-language guide HelloPharmacist
  • Your eye constantly makes a fluid that keeps it properly pressurized — but in some people, that pressure gets too high, which can damage the optic nerve over time. Dorzolamide bloc...
  • What exactly does dorzolamide do for my eyes?
  • Yes, that's very common with dorzolamide — about one in four people notice it. Eye drops can drain into the back of your throat through a small channel between your eye and nose, w...
  • I always get a bitter taste after using my eye drops — is that normal?
📖 Read our full Dorzolamide Ophthalmic guide →
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

Pricing

A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.

Price systemPer mLPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · Q2 2026 $1.59 $15.92 / 10 ml
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

Packaging — all sizes for this product

Package NDCDescription Marketing startMarketing endStatus
50090-2406-00 You're viewing this Main listing 1 BOTTLE, DROPPER in 1 CARTON / 10 mL in 1 BOTTLE, DROPPER 2016-05-18 — Active

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Dorzolamide HCl 20 mg/mL 24208-0485-10 Bausch 1 bottle $0.835 AT Availability likely —
Dorzolamide Hydrochloride 20 mg/mL 25021-0006-10 Sagent 1 bottle $0.835 AT Availability likely —
Dorzolamide Hydrochloride Ophthalmic Solution 20 mg/mL 42571-0141-26 Micro 1 bottle $0.835 AT Availability likely —
Dorzolamide Hydrochloride 20 mg/mL 61314-0019-10 Sandoz 10 ml $0.835 AT Availability likely —
Dorzolamide Hydrochloride 20 mg/mL 62332-0519-10 Alembic 1 bottle $0.835 AT Availability likely —
Dorzolamide Hydrochloride 20 mg/mL 70069-0501-01 Somerset 1 bottle $0.835 AT Availability likely —
Dorzolamide Hydrochloride Ophthalmic 20 mg/mL 71921-0400-10 Florida 10 ml $0.835 AT Availability likely —
Dorzolamide Hydrochloride 20 mg/mL 72266-0197-01 FOSUN 1 bottle $0.835 AT Availability likely —
Dorzolamide Hydrochloride 20 mg/mL 72888-0077-15 Advagen 1 bottle $0.835 AT Availability likely —
Dorzolamide Hydrochloride 20 mg/mL 14445-0404-10 Indoco 1 bottle — AT FDA listed —
Dorzolamide Hydrochloride 20 mg/mL 46708-0519-10 Alembic 1 bottle — AT FDA listed —
Dorzolamide HCl 20 mg/mLthis 50090-2406-00 A-S 1 bottle — AT FDA listed —
Dorzolamide Hydrochloride Ophthalmic 20 mg/mL 50090-4882-00 A-S 1 bottle — AT FDA listed —
Dorzolamide Hydrochloride 20 mg/mL 68083-0489-01 Gland 1 bottle — AT FDA listed —
Dorzolamide hydrochloride 20 mg/mL 69315-0304-05 Leading 1 bottle — AT FDA listed —
About this product: this is a generic version of the medicine. FDA equivalence ratings are shown when available, and other versions are listed above, least expensive first.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

Availability & generic status

🏛️
2009
On the market since
Jun 2009
📍
2026
Currently FDA-listed
17 years listed
🔓
·
Generic on the market
this product is a generic
✅This is a generic drug

This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.

Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

Inactive Ingredients / Excipients

Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.

💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.

  • UNII 059QF0KO0R
    Water is a liquid solvent that dissolves and mixes ingredients together in liquid medicines, syrups, and injections. It helps distribute the active drug evenly throughout the product.
  • UNII F5UM2KM3W7
    Benzalkonium chloride is a chemical compound that works as a preservative and antimicrobial agent in medications. It prevents bacterial and fungal growth in liquid formulations to keep the product safe during storage and use.
  • UNII S38J6RZN16
    Hydroxyethyl cellulose is a plant-derived thickening agent made from cellulose. In medicines, it acts as a binder to hold ingredients together, a thickener to adjust product texture, and a film-former to create smooth coatings on tablets.
  • UNII 3OWL53L36A
    A natural sugar alcohol derived from seaweed or synthesized in the lab. It's used as a filler to add bulk, a sweetener in sugar-free formulas, and a disintegrant to help tablets break apart in the stomach.
  • UNII 55X04QC32I
    A strong alkaline chemical used to adjust and maintain the pH balance of liquid medicines. It helps keep the medicine stable and ensures it stays effective during storage.
  • UNII B22547B95K
    A salt derived from citric acid that helps maintain the proper acid-base balance in the medicine. It's used as a buffer to keep the product stable and at the right pH level.

6 inactive ingredients listed in the exact product block matched to this NDC.

Where does this data come from?
Data sourced from official FDA Structured Product Labeling (SPL) via DailyMed — ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

Manufacturer & labeler

LabelerA-S Medication Solutions
Application holderBAUSCH AND LOMB INC
FDA applicationANDA090143 (ANDA)
Labeler code50090
First marketedJun 2009
Product typeHuman Prescription Drug
Portfolio2,811 products on file
The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Very long sections are excerpted here and marked; the full text is on DailyMed (linked in the sources below). Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage 53 words ▾

1 INDICATIONS AND USAGE Dorzolamide hydrochloride ophthalmic solution is indicated in the treatment of elevated intraocular pressure in patients with ocular hypertension or open-angle glaucoma. Dorzolamide hydrochloride ophthalmic solution is a carbonic anhydrase inhibitor indicated for the treatment of elevated intraocular pressure in patients with ocular hypertension or open-angle glaucoma. ( 1 )

⏱️ Dosage and Administration 97 words ▾

2 DOSAGE AND ADMINISTRATION The dose is one drop of dorzolamide hydrochloride ophthalmic solution in the affected eye(s) three times daily. Dorzolamide hydrochloride ophthalmic solution may be used concomitantly with other topical ophthalmic drug products to lower intraocular pressure. If more than one topical ophthalmic drug is being used, the drugs should be administered at least five minutes apart.

The dose is one drop of dorzolamide hydrochloride ophthalmic solution in the affected eye(s) three times daily. Dorzolamide hydrochloride ophthalmic solution may be used concomitantly with other topical ophthalmic drug products to lower intraocular pressure. ( 2 )

💊 Dosage Forms and Strengths 29 words ▾

3 DOSAGE FORMS AND STRENGTHS Ophthalmic solution containing dorzolamide 2% (20 mg/mL) equivalent to 22.3 mg/mL of dorzolamide hydrochloride. Ophthalmic solution containing dorzolamide 2% (20 mg/mL). ( 3 )

⛔ Contraindications 49 words ▾

4 CONTRAINDICATIONS Dorzolamide hydrochloride ophthalmic solution is contraindicated in patients who are hypersensitive to any component of this product [see Warnings and Precautions ( 5.1 )] . Dorzolamide hydrochloride ophthalmic solution is contraindicated in patients who are hypersensitive to any component of this product. ( 4 , 5.1 )

⚠️ Warnings and Cautions ~2 min read ▾

5 WARNINGS AND PRECAUTIONS • Sulfonamide Hypersensitivity ( 5.1 ) • Bacterial Keratitis ( 5.2 ) • Corneal Endothelium ( 5.3 ) • Allergic Reactions ( 5.4 ) • Acute Angle-Closure Glaucoma ( 5.5 )

5.1Sulfonamide Hypersensitivity Dorzolamide hydrochloride ophthalmic solution contains dorzolamide, a sulfonamide; and although administered topically, it is absorbed systemically. Therefore, the same types of adverse reactions that are attributable to sulfonamides may occur with topical administration of dorzolamide hydrochloride ophthalmic solution. Fatalities have occurred, although rarely, due to severe reactions to sulfonamides including Stevens-Johnson syndrome, toxic epidermal necrolysis, fulminant hepatic necrosis, agranulocytosis, aplastic anemia, and other blood dyscrasias.

Sensitization may recur when a sulfonamide is readministered irrespective of the route of administration. If signs of serious reactions or hypersensitivity occur, discontinue the use of this preparation [see Contraindications ( 4 )] .

5.2Bacterial Keratitis There have been reports of bacterial keratitis associated with the use of multiple-dose containers of topical ophthalmic products. These containers had been inadvertently contaminated by patients who, in most cases, had a concurrent corneal disease or a disruption of the ocular epithelial surface.

5.3Corneal Endothelium Carbonic anhydrase activity has been observed in both the cytoplasm and around the plasma membranes of the corneal endothelium. There is an increased potential for developing corneal edema in patients with low endothelial cell counts. Caution should be used when prescribing dorzolamide hydrochloride ophthalmic solution to this group of patients.

5.4Allergic Reactions In clinical studies, local ocular adverse effects, primarily conjunctivitis and lid reactions, were reported with chronic administration of dorzolamide hydrochloride ophthalmic solution. Many of these reactions had the clinical appearance and course of an allergic-type reaction that resolved upon discontinuation of drug therapy. If such reactions are observed, dorzolamide hydrochloride ophthalmic solution should be discontinued and the patient evaluated before considering restarting the drug [see Adverse Reactions ( 6 )] .

5.5Acute Angle-Closure Glaucoma The management of patients with acute angle-closure glaucoma requires therapeutic interventions in addition to ocular hypotensive agents.

🤒 Adverse Reactions ~2 min read ▾

6 ADVERSE REACTIONS The most frequently reported adverse reactions associated with dorzolamide hydrochloride ophthalmic solution were ocular burning, stinging, or discomfort immediately following ocular administration (approximately one-third of patients). Approximately one-quarter of patients noted a bitter taste following administration. Superficial punctate keratitis occurred in 10 to 15% of patients and signs and symptoms of ocular allergic reaction in approximately 10%.

( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Bausch & Lomb Incorporated at 1-800-553-5340 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

6.1Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Controlled Clinical Trials : The most frequent adverse reactions associated with dorzolamide hydrochloride ophthalmic solution were ocular burning, stinging, or discomfort immediately following ocular administration (approximately one-third of patients).

Approximately one-quarter of patients noted a bitter taste following administration. Superficial punctate keratitis occurred in 10 to 15% of patients and signs and symptoms of ocular allergic reaction in approximately 10%. Reactions occurring in approximately 1 to 5% of patients were conjunctivitis and lid reactions [see Warnings and Precautions ( 5.4 )] , blurred vision, eye redness, tearing, dryness, and photophobia.

Other ocular reactions and systemic reactions were reported infrequently, including headache, nausea, asthenia/fatigue; and, rarely, skin rashes, urolithiasis, and iridocyclitis. In a 3-month, double-masked, active-treatment-controlled, multicenter study in pediatric patients, the adverse reactions profile of dorzolamide hydrochloride ophthalmic solution was comparable to that seen in adult patients.

6.2Postmarketing Experience The following adverse reactions have been identified during post-approval use of dorzolamide hydrochloride ophthalmic solution. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure: signs and symptoms of systemic allergic reactions including angioedema, bronchospasm, pruritus, and urticaria; Stevens-Johnson syndrome and toxic epidermal necrolysis; dizziness, paresthesia; ocular pain, transient myopia, choroidal detachment following filtration surgery, eyelid crusting; dyspnea; contact dermatitis, epistaxis, dry mouth and throat irritation.

🔄 Drug Interactions 144 words ▾

7 DRUG INTERACTIONS • Potential additive effect of oral carbonic anhydrase inhibitor with dorzolamide hydrochloride ophthalmic solution. ( 7.1 ) • Potential acid-base and electrolyte disturbances. ( 7.2 )

7.1Oral Carbonic Anhydrase Inhibitors There is a potential for an additive effect on the known systemic effects of carbonic anhydrase inhibition in patients receiving an oral carbonic anhydrase inhibitor and dorzolamide hydrochloride ophthalmic solution. The concomitant administration of dorzolamide hydrochloride ophthalmic solution and oral carbonic anhydrase inhibitors is not recommended.

7.2High-Dose Salicylate Therapy Although acid-base and electrolyte disturbances were not reported in the clinical trials with dorzolamide hydrochloride ophthalmic solution, these disturbances have been reported with oral carbonic anhydrase inhibitors and have, in some instances, resulted in drug interactions (e.g., toxicity associated with high-dose salicylate therapy). Therefore, the potential for such drug interactions should be considered in patients receiving dorzolamide hydrochloride ophthalmic solution.

👥 Use in Specific Populations ~3 min read ▾

8 USE IN SPECIFIC POPULATIONS

8.1Pregnancy Risk Summary There are no adequate and well-controlled studies in pregnant women with dorzolamide hydrochloride ophthalmic solution. Dorzolamide caused fetal vertebral malformations when administered orally to rabbits at 2.5 mg/kg/day (37 times the clinical exposure). Dorzolamide administered during the period of organogenesis was not teratogenic in rabbits dosed up to 1 mg/kg/day (15 times the clinical exposure).

Dorzolamide hydrochloride administered orally to rats during late gestation and lactation caused growth delays in offspring at 7.5 mg/kg/day (52 times the clinical exposure). Growth was not delayed at 1 mg/kg/day (8.0 times the clinical exposure). The background risk of major birth defects and miscarriage for the indicated population is unknown.

In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively. Data Animal Data Developmental toxicity studies were conducted in pregnant rabbits administered dorzolamide hydrochloride orally during the period of organogenesis from gestation days 6 through 18 at doses of 0.2, 1, 2.5, 5, and 10 mg/kg/day. The developmental lowest observed adverse effect level (LOAEL) was 2.5 mg/kg/day, based on vertebral malformations and decreased fetal body weight.

The maternal LOAEL was 2.5 mg/kg/day, based on metabolic acidosis and reduced weight gain. The maternal and developmental no adverse effect levels (NOAELs) were 1 mg/kg/day. The rabbit doses of 1 and 2.5 mg/kg/day represent estimated plasma C max levels in rabbits 15 and 37 times higher than the lower limit of detection in human plasma following ocular administration, respectively.

Dorzolamide hydrochloride was administered orally to rats during late gestation and lactation (gestation day 17 through postpartum day 20) at doses of 0.1, 1, or 7.5 mg/kg/day. The developmental LOAEL was 7.5 mg/kg/day, based on reduced birth weight, reduced weight gain, and a slight delay in postnatal development (incisor eruption, vaginal canalization and eye openings) secondary to lower offspring body weight. This 7.5 mg/kg/day dose represents an estimated plasma C max level in rats 52 times higher than the lower limit of detection in human plasma following ocular administration.

The developmental NOAEL was 1 mg/kg/day. The maternal LOAEL was 1 mg/kg/day, based on reduced body weight gain. The maternal NOAEL was 0.1 mg/kg/day.

The rat doses of 1 and 0.1 mg/kg/day represent estimated plasma C max levels in rats approximately 8.0 times and approximately equal (1x), respectively to the lower limit of detection in human plasma following ocular administration.

8.2Lactation Risk Summary There are no data on the presence of dorzolamide hydrochloride ophthalmic solution in human milk, the effects on the breast-fed infant, or the effects on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for dorzolamide hydrochloride ophthalmic solution and any potential adverse effects on the breast-fed child from dorzolamide hydrochloride ophthalmic solution. Dorzolamide is present in the milk of lactating rats (see Data) .

Data Animal Data Lactating rats were dosed orally with 7.5 mg/kg/day of dorzolamide hydrochloride; dorzolamide and the N-desethyl metabolite were detected in the milk.

8.4Pediatric Use Safety and effectiveness of dorzolamide hydrochloride ophthalmic solution have been demonstrated in pediatric patients in a 3-month, multicenter, double-masked, active-treatment-controlled trial.

8.5Geriatric Use No overall differences in safety or effectiveness have been observed between elderly and younger patients.

8.6Renal and Hepatic Impairment Dorzolamide has not been studied in patients with severe renal impairment (CrCl < 30 mL/min). Because dorzolamide and its metabolite are excreted predominantly by the kidney, dorzolamid… [Excerpted — this section continues on DailyMed.]

🤰 Pregnancy ~2 min read ▾

8.1Pregnancy Risk Summary There are no adequate and well-controlled studies in pregnant women with dorzolamide hydrochloride ophthalmic solution. Dorzolamide caused fetal vertebral malformations when administered orally to rabbits at 2.5 mg/kg/day (37 times the clinical exposure). Dorzolamide administered during the period of organogenesis was not teratogenic in rabbits dosed up to 1 mg/kg/day (15 times the clinical exposure).

Dorzolamide hydrochloride administered orally to rats during late gestation and lactation caused growth delays in offspring at 7.5 mg/kg/day (52 times the clinical exposure). Growth was not delayed at 1 mg/kg/day (8.0 times the clinical exposure). The background risk of major birth defects and miscarriage for the indicated population is unknown.

In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively. Data Animal Data Developmental toxicity studies were conducted in pregnant rabbits administered dorzolamide hydrochloride orally during the period of organogenesis from gestation days 6 through 18 at doses of 0.2, 1, 2.5, 5, and 10 mg/kg/day. The developmental lowest observed adverse effect level (LOAEL) was 2.5 mg/kg/day, based on vertebral malformations and decreased fetal body weight.

The maternal LOAEL was 2.5 mg/kg/day, based on metabolic acidosis and reduced weight gain. The maternal and developmental no adverse effect levels (NOAELs) were 1 mg/kg/day. The rabbit doses of 1 and 2.5 mg/kg/day represent estimated plasma C max levels in rabbits 15 and 37 times higher than the lower limit of detection in human plasma following ocular administration, respectively.

Dorzolamide hydrochloride was administered orally to rats during late gestation and lactation (gestation day 17 through postpartum day 20) at doses of 0.1, 1, or 7.5 mg/kg/day. The developmental LOAEL was 7.5 mg/kg/day, based on reduced birth weight, reduced weight gain, and a slight delay in postnatal development (incisor eruption, vaginal canalization and eye openings) secondary to lower offspring body weight. This 7.5 mg/kg/day dose represents an estimated plasma C max level in rats 52 times higher than the lower limit of detection in human plasma following ocular administration.

The developmental NOAEL was 1 mg/kg/day. The maternal LOAEL was 1 mg/kg/day, based on reduced body weight gain. The maternal NOAEL was 0.1 mg/kg/day.

The rat doses of 1 and 0.1 mg/kg/day represent estimated plasma C max levels in rats approximately 8.0 times and approximately equal (1x), respectively to the lower limit of detection in human plasma following ocular administration.

🧒 Pediatric Use 24 words ▾

8.4Pediatric Use Safety and effectiveness of dorzolamide hydrochloride ophthalmic solution have been demonstrated in pediatric patients in a 3-month, multicenter, double-masked, active-treatment-controlled trial.

🧓 Geriatric Use 18 words ▾

8.5Geriatric Use No overall differences in safety or effectiveness have been observed between elderly and younger patients.

🆘 Overdosage 29 words ▾

10 OVERDOSAGE Electrolyte imbalance, development of an acidotic state, and possible central nervous system effects may occur. Serum electrolyte levels (particularly potassium) and blood pH levels should be monitored.

🧬 Clinical Pharmacology ~2 min read ▾

12 CLINICAL PHARMACOLOGY

12.1Mechanism of Action Carbonic anhydrase (CA) is an enzyme found in many tissues of the body including the eye. It catalyzes the reversible reaction involving the hydration of carbon dioxide and the dehydration of carbonic acid. In humans, carbonic anhydrase exists as a number of isoenzymes, the most active being carbonic anhydrase II (CA-II), found primarily in red blood cells (RBCs), but also in other tissues.

Inhibition of carbonic anhydrase in the ciliary processes of the eye decreases aqueous humor secretion, presumably by slowing the formation of bicarbonate ions with subsequent reduction in sodium and fluid transport. The result is a reduction in intraocular pressure (IOP). Dorzolamide hydrochloride ophthalmic solution contains dorzolamide hydrochloride, an inhibitor of human carbonic anhydrase II.

Following topical ocular administration, dorzolamide hydrochloride ophthalmic solution reduces elevated intraocular pressure. Elevated intraocular pressure is a major risk factor in the pathogenesis of optic nerve damage and glaucomatous visual field loss.

12.3Pharmacokinetics When topically applied, dorzolamide reaches the systemic circulation. To assess the potential for systemic carbonic anhydrase inhibition following topical administration, drug and metabolite concentrations in RBCs and plasma and carbonic anhydrase inhibition in RBCs were measured. Dorzolamide accumulates in RBCs during chronic dosing as a result of binding to CA-II.

The parent drug forms a single N-desethyl metabolite, which inhibits CA-II less potently than the parent drug but also inhibits CA-I. The metabolite also accumulates in RBCs where it binds primarily to CA-I. Plasma concentrations of dorzolamide and metabolite are generally below the assay limit of quantitation (15 nM).

Dorzolamide binds moderately to plasma proteins (approximately 33%). Dorzolamide is primarily excreted unchanged in the urine; the metabolite also is excreted in urine. After dosing is stopped, dorzolamide washes out of RBCs nonlinearly, resulting in a rapid decline of drug concentration initially, followed by a slower elimination phase with a half-life of about four months.

To simulate the systemic exposure after long-term topical ocular administration, dorzolamide was given orally to eight healthy subjects for up to 20 weeks. The oral dose of 2 mg twice daily closely approximates the amount of drug delivered by topical ocular administration of dorzolamide 2% three times daily. Steady state was reached within 8 weeks.

The inhibition of CA-II and total carbonic anhydrase activities was below the degree of inhibition anticipated to be necessary for a pharmacological effect on renal function and respiration in healthy individuals.

🧬 Mechanism of Action 153 words ▾

12.1Mechanism of Action Carbonic anhydrase (CA) is an enzyme found in many tissues of the body including the eye. It catalyzes the reversible reaction involving the hydration of carbon dioxide and the dehydration of carbonic acid. In humans, carbonic anhydrase exists as a number of isoenzymes, the most active being carbonic anhydrase II (CA-II), found primarily in red blood cells (RBCs), but also in other tissues.

Inhibition of carbonic anhydrase in the ciliary processes of the eye decreases aqueous humor secretion, presumably by slowing the formation of bicarbonate ions with subsequent reduction in sodium and fluid transport. The result is a reduction in intraocular pressure (IOP). Dorzolamide hydrochloride ophthalmic solution contains dorzolamide hydrochloride, an inhibitor of human carbonic anhydrase II.

Following topical ocular administration, dorzolamide hydrochloride ophthalmic solution reduces elevated intraocular pressure. Elevated intraocular pressure is a major risk factor in the pathogenesis of optic nerve damage and glaucomatous visual field loss.

📦 How Supplied / Storage and Handling 20 words ▾

16 HOW SUPPLIED/STORAGE AND HANDLING Product: 50090-2406 NDC: 50090-2406-0 10 mL in a BOTTLE, DROPPER / 1 in a CARTON

📋 Description 181 words ▾

11 DESCRIPTION Dorzolamide hydrochloride ophthalmic solution, USP is a carbonic anhydrase inhibitor formulated for topical ophthalmic use. Dorzolamide hydrochloride USP is described chemically as: (4 S-trans )-4-(ethylamino)-5,6-dihydro-6-methyl-4 H -thieno[2,3- b ]thiopyran-2-sulfonamide 7,7-dioxide monohydrochloride. Dorzolamide hydrochloride is optically active.

The specific rotation is: Its empirical formula is C 10 H 16 N 2 O 4 S 3 ∙HCl and its structural formula is: Dorzolamide hydrochloride USP has a molecular weight of 360.9 and a melting point of about 264°C. It is a white to off-white, crystalline powder, which is soluble in water and slightly soluble in methanol and ethanol. Dorzolamide hydrochloride ophthalmic solution, USP is supplied as a sterile, isotonic, buffered, slightly viscous, aqueous solution of dorzolamide hydrochloride USP.

The pH of the solution is approximately 5.6, and the osmolarity is 260-330 mOsM. Each mL of dorzolamide hydrochloride ophthalmic solution USP, 2% contains 20 mg dorzolamide (equivalent to 22.3 mg of dorzolamide hydrochloride USP). Inactive ingredients are hydroxyethyl cellulose, mannitol, sodium citrate dihydrate, sodium hydroxide (to adjust pH) and water for injection.

Benzalkonium chloride 0.0075% is added as a preservative. Chem1 Chem

💬 Information for Patients ~1 min read ▾

17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling (Instructions for Use). Sulfonamide Reactions Dorzolamide hydrochloride ophthalmic solution is a sulfonamide and although administered topically is absorbed systemically. Therefore the same types of adverse reactions that are attributable to sulfonamides may occur with topical administration.

Advise patients that if serious or unusual reactions including severe skin reactions or signs of hypersensitivity occur, they should discontinue the use of the product [see Warnings and Precautions ( 5.1 )] . Intercurrent Ocular Conditions Advise patients that if they have ocular surgery or develop an intercurrent ocular condition (e.g., trauma or infection), they should immediately seek their physician’s advice concerning the continued use of the present multidose container. Handling Ophthalmic Solutions Instruct patients to avoid allowing the tip of the dispensing container to contact the eye or surrounding structures.

Instruct patients that ocular solutions, if handled improperly or if the tip of the dispensing container contacts the eye or surrounding structures, can become contaminated by common bacteria known to cause ocular infections. Serious damage to the eye and subsequent loss of vision may result from using contaminated solutions. Concomitant Topical Ocular Therapy If more than one topical ophthalmic drug is being used, the drugs should be administered at least five minutes apart.

Contact Lens Use Advise patients that dorzolamide hydrochloride ophthalmic solution contains benzalkonium chloride which may be absorbed by soft contact lenses. Contact lenses should be removed prior to administration of the solution. Lenses may be reinserted 15 minutes following dorzolamide hydrochloride ophthalmic solution administration.

When to Seek Physician Advice Advise patients that if they develop any ocular reactions, particularly conjunctivitis and lid reactions, they should discontinue use and seek their physician’s advice. Distributed by: Bausch & Lomb Americas Inc. Bridgewater, NJ 08807 USA Manufactured by: Bausch & Lomb Incorporated Tampa, FL 33637 USA © 2022 Bausch & Lomb Incorporated or its affiliates 9633502 (Folded) 9633402 (Flat)

🧬 Pharmacokinetics ~1 min read ▾

12.3Pharmacokinetics When topically applied, dorzolamide reaches the systemic circulation. To assess the potential for systemic carbonic anhydrase inhibition following topical administration, drug and metabolite concentrations in RBCs and plasma and carbonic anhydrase inhibition in RBCs were measured. Dorzolamide accumulates in RBCs during chronic dosing as a result of binding to CA-II.

The parent drug forms a single N-desethyl metabolite, which inhibits CA-II less potently than the parent drug but also inhibits CA-I. The metabolite also accumulates in RBCs where it binds primarily to CA-I. Plasma concentrations of dorzolamide and metabolite are generally below the assay limit of quantitation (15 nM).

Dorzolamide binds moderately to plasma proteins (approximately 33%). Dorzolamide is primarily excreted unchanged in the urine; the metabolite also is excreted in urine. After dosing is stopped, dorzolamide washes out of RBCs nonlinearly, resulting in a rapid decline of drug concentration initially, followed by a slower elimination phase with a half-life of about four months.

To simulate the systemic exposure after long-term topical ocular administration, dorzolamide was given orally to eight healthy subjects for up to 20 weeks. The oral dose of 2 mg twice daily closely approximates the amount of drug delivered by topical ocular administration of dorzolamide 2% three times daily. Steady state was reached within 8 weeks.

The inhibition of CA-II and total carbonic anhydrase activities was below the degree of inhibition anticipated to be necessary for a pharmacological effect on renal function and respiration in healthy individuals.

🔬 Clinical Studies 169 words ▾

14 CLINICAL STUDIES The efficacy of dorzolamide hydrochloride ophthalmic solution was demonstrated in clinical studies in the treatment of elevated intraocular pressure in patients with glaucoma or ocular hypertension (baseline IOP ≥ 23 mmHg). The IOP-lowering effect of dorzolamide hydrochloride ophthalmic solution was approximately 3 to 5 mmHg throughout the day and this was consistent in clinical studies of up to one year duration. The efficacy of dorzolamide hydrochloride ophthalmic solution when dosed less frequently than three times a day (alone or in combination with other products) has not been established.

In a one year clinical study, the effect of dorzolamide hydrochloride ophthalmic solution 2% three times daily on the corneal endothelium was compared to that of betaxolol ophthalmic solution twice daily and timolol maleate ophthalmic solution 0.5% twice daily. There were no statistically significant differences between groups in corneal endothelial cell counts or in corneal thickness measurements. There was a mean loss of approximately 4% in the endothelial cell counts for each group over the one year period.

🧪 Nonclinical Toxicology ~2 min read ▾

13 NONCLINICAL TOXICOLOGY

13.1Carcinogenesis, Mutagenesis, Impairment of Fertility In a two-year study of dorzolamide hydrochloride administered orally to male and female Sprague-Dawley rats, urinary bladder papillomas were seen in male rats in the highest dosage group of 20 mg/kg/day. Papillomas were not seen in rats given oral doses of 1 mg/kg/day. These doses represent estimated plasma C max levels in rats, 138 and 7 times higher than the lower limit of detection in human plasma following ocular administration, respectively.

No treatment-related tumors were seen in a 21-month study in female and male mice given oral doses up to 75 mg/kg/day. This dose represents an estimated plasma C max level in mice, 582 times higher than the lower limit of detection in human plasma following ocular administration. The increased incidence of urinary bladder papillomas seen in the high-dose male rats is a class-effect of carbonic anhydrase inhibitors in rats.

Rats are particularly prone to developing papillomas in response to foreign bodies, compounds causing crystalluria, and diverse sodium salts. No changes in bladder urothelium were seen in dogs given oral dorzolamide hydrochloride for one year at 2 mg/kg/day or monkeys dosed topically to the eye for one year. An oral dose of 2 mg/kg/day in dogs represents an estimated plasma C max level, 137 times higher than the lower limit of detection in human plasma following ocular administration.

The topical ophthalmic dose in monkeys was approximately equivalent to the human topical ophthalmic dose. The following tests for mutagenic potential were negative: (1) in vivo (mouse) cytogenetic assay; (2) in vitro chromosomal aberration assay; (3) alkaline elution assay; (4) V-79 assay; and (5) Ames test. In fertility studies of dorzolamide hydrochloride in rats, there were no adverse effects on the reproductive capacity of males or females at doses of 15 and 7.5 mg/kg/day, respectively.

These doses represent estimated plasma C max levels in rats, 103 and 52 times higher than the lower limit of detection in human plasma following ocular administration, respectively.

📄 Carcinogenesis, Mutagenesis, Impairment of Fertility ~1 min read ▾

13.1Carcinogenesis, Mutagenesis, Impairment of Fertility In a two-year study of dorzolamide hydrochloride administered orally to male and female Sprague-Dawley rats, urinary bladder papillomas were seen in male rats in the highest dosage group of 20 mg/kg/day. Papillomas were not seen in rats given oral doses of 1 mg/kg/day. These doses represent estimated plasma C max levels in rats, 138 and 7 times higher than the lower limit of detection in human plasma following ocular administration, respectively.

No treatment-related tumors were seen in a 21-month study in female and male mice given oral doses up to 75 mg/kg/day. This dose represents an estimated plasma C max level in mice, 582 times higher than the lower limit of detection in human plasma following ocular administration. The increased incidence of urinary bladder papillomas seen in the high-dose male rats is a class-effect of carbonic anhydrase inhibitors in rats.

Rats are particularly prone to developing papillomas in response to foreign bodies, compounds causing crystalluria, and diverse sodium salts. No changes in bladder urothelium were seen in dogs given oral dorzolamide hydrochloride for one year at 2 mg/kg/day or monkeys dosed topically to the eye for one year. An oral dose of 2 mg/kg/day in dogs represents an estimated plasma C max level, 137 times higher than the lower limit of detection in human plasma following ocular administration.

The topical ophthalmic dose in monkeys was approximately equivalent to the human topical ophthalmic dose. The following tests for mutagenic potential were negative: (1) in vivo (mouse) cytogenetic assay; (2) in vitro chromosomal aberration assay; (3) alkaline elution assay; (4) V-79 assay; and (5) Ames test. In fertility studies of dorzolamide hydrochloride in rats, there were no adverse effects on the reproductive capacity of males or females at doses of 15 and 7.5 mg/kg/day, respectively.

These doses represent estimated plasma C max levels in rats, 103 and 52 times higher than the lower limit of detection in human plasma following ocular administration, respectively.

📄 Patient Package Insert ~3 min read ▾

INSTRUCTIONS FOR USE Dorzolamide Hydrochloride Ophthalmic Solution USP, 2% (dor-Zoe-la-mide HYE-dro-KLOR-ide) Before using your dorzolamide hydrochloride ophthalmic solution Before using your dorzolamide hydrochloride ophthalmic solution for the first time, make sure the safety seal strip on the bottle is unbroken. (See Figure A.) Step 1. Wash your hands.

Step 2. Tear off the safety seal strip. See Figure B.

Step 3. Unscrew the cap by turning counterclockwise. See Figure C.

Giving your dorzolamide hydrochloride ophthalmic solution drops Step 4. Tilt your head back and pull your lower eyelid down slightly to form a pocket between your eyelid and your eye. See Figure D.

Step 5. Turn your dorzolamide hydrochloride ophthalmic solution dispenser upside down until a single drop is placed in your eye. Do not touch your eye or eyelid with the dropper tip.

See Figure E. Step 6. Do not try to make the hole of the dispenser tip larger.

The dispenser tip is made to provide a single drop. Repeat Steps 4 and 5 to give your dorzolamide hydrochloride ophthalmic solution drop. Step 7.

If your doctor has told you to use dorzolamide hydrochloride ophthalmic solution drops in both eyes, repeat Steps 4 and 5. After using your dorzolamide hydrochloride ophthalmic solution Step 8. Replace the cap by turning it clockwise until it is firmly touching your dorzolamide hydrochloride ophthalmic solution dispenser.

Do not over tighten or you may damage the dorzolamide hydrochloride ophthalmic solution dispenser and cap. See Figure F. How should I store dorzolamide hydrochloride ophthalmic solution? • Store dorzolamide hydrochloride ophthalmic solution at 68°F to 77°F (20°C to 25°C) • Protect from light • After opening, dorzolamide hydrochloride ophthalmic solution can be used until the expiration date on the bottle • Safely throw away medicine that is out of date or no longer needed.

Keep dorzolamide hydrochloride ophthalmic solution and all medicines out of the reach of children. Important information about using dorzolamide hydrochloride ophthalmic solution • If you have any eye or skin reactions, especially conjunctivitis or eyelid reactions to dorzolamide hydrochloride ophthalmic solution, stop using it and call your doctor right away. • If you have eye surgery or have a problem such as trauma or infection of your eye while using dorzolamide hydrochloride ophthalmic solution, call your doctor right away. • If you do not handle eye medicines the right way the medicine can become contaminated.

If the tip of the dispenser touches your eye or areas around your eye, the tip can become contaminated with bacteria which can cause an eye infection and other serious problems including loss of eyesight. • If you use other eye medicines dropped onto the eye like dorzolamide hydrochloride ophthalmic solution, use the medicines at least 5 minutes before or after you use dorzolamide hydrochloride ophthalmic solution. Dorzolamide hydrochloride ophthalmic solution contains benzalkonium chloride which may be absorbed by soft contact lenses.

If you wear contact lenses, remove them before you use your dorzolamide hydrochloride ophthalmic solution. You can place your contact lenses back into your eyes 15 minutes after using your dorzolamide hydrochloride ophthalmic solution. Distributed by: Bausch & Lomb Americas Inc.

Bridgewater, NJ 08807 USA Manufactured by: Bausch & Lomb Incorporated Tampa, FL 33637 USA © 2022 Bausch & Lomb Incorporated or its affiliates Revised: 12/2022 9633502 (Folded) 9633402 (Flat) FigA FigB FigC FigD FigE FigF

📄 Package Label / Principal Display Panel 4 words ▾

Dorzolamide HCl Label Image

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗

Medicare Part D spend CMS · PART D · 2026 (Q1)

Medicare Part D (outpatient prescription) spending for Dorzolamide HCl — the program that covers self-administered drugs. 10 manufacturers.
⚠️ Drug-level data: CMS publishes Part D spending by drug, not by NDC — these figures combine every manufacturer, strength and package size sold under the name Dorzolamide HCl. That’s a different level of aggregation than the Medicaid card above, which is specific to this exact 11-digit NDC (pack size included), so the two aren’t directly comparable.
Period
Total Part D spend
$5.8M
Claims incl. refills
274.1K
Beneficiaries
192.1K
Spend / beneficiary
$30.18
Spend / claim
$21.14
Trend by period
💵 About the dollar figures: spending is what Part D plans paid before confidential manufacturer rebates, so the program’s real net cost is lower. A blank patient count means fewer than 11 people — CMS hides counts that small to protect privacy. Source: CMS Medicare Quarterly Part D Spending by Drug (data.cms.gov), updated quarterly.

About this NDC listing & data coverage

Finished prescription product
What data is (and isn’t) available for this NDC — tap to expand
NDC identity (package / product / labeler codes) ✓ Available
Labeler ✓ Available
Product & package description ✓ Available
Marketing category & status ✓ Available
Active ingredient / dosage form / route ✓ Available
FDA label (SPL via DailyMed) ✓ Available
Package photos ✓ Available
Inactive ingredients (structured) ✓ Available
NADAC pharmacy acquisition price (CMS) — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey.
Orange Book / therapeutic-equivalence data ✓ Available
HCPCS J-code billing crosswalk — Not published for this NDC Most self-administered / retail products have no J-code — that is normal.
Medicaid utilization (CMS SDUD) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The form printed on the packaging and shown on DailyMed is the one the FDA registered. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero and the dashes are dropped. The Identity section at the top of this page lists each form of this code.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by A-S Medication Solutions. Listing status can change — the directory data on this page refreshes weekly.
Who lists this product with the FDA?
A-S Medication Solutions is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as a prescription product, so it is dispensed under a prescriber's order. Your pharmacist can tell you whether any over-the-counter forms of the same medication exist.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.
For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.