Glatiramer Injection
Glatiramer acetate injection (brands include Copaxone and Glatopa) is a subcutaneous injection used to treat relapsing forms of multiple sclerosis in adults.
🧬 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 13 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 →
⚠️ FDA Boxed Warning — the FDA’s strongest safety alert ▾
Glatiramer acetate injection carries a boxed warning — the FDA's most serious safety alert — about life-threatening and fatal anaphylaxis (severe allergic reaction). This reaction can happen after the very first injection or at any point during treatment, even years later. Signs include sudden trouble breathing, throat tightening, rapid heartbeat, severe hives, and dizziness. Because these symptoms can look like a milder, common post-injection reaction, it is important not to wait — seek emergency medical care immediately if they occur. If you have ever had a serious allergic reaction to glatiramer acetate or mannitol, you must not use this medication. If anaphylaxis occurs, treatment must be stopped permanently unless another clear cause is found.
📖 Glatiramer Injection: Patient Information Guide
A plain-language walkthrough of Glatiramer Injection — what it treats, how it works, how it’s taken, side effects, warnings and interactions. Tap any section to expand it.
🎯What it's used for▾
Glatiramer acetate injection is approved for adults with relapsing forms of multiple sclerosis (MS). It covers the following forms:
- Clinically isolated syndrome — a first neurological episode that may be an early sign of MS
- Relapsing-remitting MS — the most common type, with defined flare-ups followed by partial or full recovery
- Active secondary progressive MS — a later stage where disability gradually worsens but relapses are still occurring
⚙️How it works▾
Glatiramer acetate is thought to work by changing how the immune system behaves in MS. In MS, the immune system mistakenly attacks myelin — the protective sheath around nerve fibers in the brain and spinal cord. Glatiramer acetate appears to activate immune cells called suppressor T-cells that can dampen this abnormal attack. The exact mechanism is not fully understood, but this immune-modifying effect is the leading explanation for its benefit in MS.
Because glatiramer acetate influences immune function, there is a theoretical possibility it could affect the body's normal defenses against infection or tumors. This has not been proven, but your doctor will monitor you during treatment.
💊How it's taken▾
Glatiramer acetate injection is given as a subcutaneous (under-the-skin) shot — it must never be given into a vein. Two different strengths are available with different schedules:
- Once-daily strength: injected every day
- Three-times-weekly strength: injected three times per week, with at least 48 hours between doses
These two strengths are not interchangeable — do not switch between them without your prescriber's guidance. Always let the prefilled syringe warm to room temperature for about 20 minutes before each injection, and rotate your injection site every time to protect the skin.
🤒Side effects — in detail▾
Most side effects are mild and manageable. The most common ones include:
- Injection site reactions: redness, pain, swelling, itching, and lumps at the injection site
- Flushing (a sensation of warmth and redness)
- Shortness of breath
- Chest pain — usually brief and not dangerous
- Rash and skin itching
- Nausea
- Anxiety
- Rapid heartbeat (tachycardia) or palpitations
Seek emergency care right away for signs of a severe allergic reaction — such as throat tightening, difficulty breathing, severe hives, or sudden dizziness. Also call your doctor promptly if you notice yellowing of the skin or eyes, or significant changes at injection sites such as skin breakdown or loss of fat tissue.
⚠️Warnings & precautions▾
- Anaphylaxis (life-threatening allergic reaction): This is the most serious risk. It can occur after any dose — including the first — and at any point in treatment. Signs include trouble breathing, throat constriction, hives, and rapid heartbeat. Seek emergency care immediately if this happens. Anyone with a prior serious allergic reaction to glatiramer acetate or mannitol must not use this drug.
- Immediate post-injection reaction: A cluster of symptoms — flushing, chest tightness, palpitations, anxiety, shortness of breath — can appear within seconds to minutes of an injection. These are usually short-lived and not dangerous, but they can overlap with anaphylaxis, so always err on the side of caution.
- Chest pain: Transient chest pain has been reported in a meaningful number of patients. It usually resolves on its own, but ongoing or severe chest pain should always be evaluated.
- Skin and injection site changes: Loss of fat tissue under the skin (lipoatrophy) at injection sites may be permanent. Rarely, skin tissue death (necrosis) can occur. Rotating injection sites carefully at each dose reduces this risk.
- Liver injury: Serious liver damage, including liver failure, has been reported — sometimes appearing years after starting treatment. Tell your doctor about any symptoms like jaundice, dark urine, or unusual fatigue.
- Immune system effects: This medication modifies immune response. While no confirmed harms from this have been identified, the theoretical risk of reduced defense against infections or tumors exists and warrants monitoring.
🔀What it interacts with▾
The FDA label for glatiramer acetate injection does not identify specific drug, food, or supplement interactions. However, because this medication affects how the immune system works, your doctor should be aware of all other medications and supplements you take — especially anything else that affects immunity.
- Immune-modifying or immunosuppressive drugs: Using other agents that alter immune function alongside glatiramer acetate could compound the risk of reduced immune defense, though no specific combinations are listed in the label
This is not a complete list of interactions. Always talk with your doctor or pharmacist before starting, stopping, or changing any medication.
📋Before taking it▾
- Allergy to glatiramer acetate or mannitol: Do not use this medication if you have had a serious allergic reaction to either ingredient — this is an absolute contraindication
- Pregnancy: Data from years of use and observational studies have not identified a clear risk of birth defects or miscarriage, but discuss the benefits and risks fully with your doctor before or during pregnancy
- Breastfeeding: Very little drug is expected to reach breast milk because most is broken down locally at the injection site; however, there are no human data, and your doctor should be part of this decision
- Children under 18: Safety and effectiveness have not been established in pediatric patients
- Older adults: Glatiramer acetate injection has not been specifically studied in elderly patients; use with appropriate monitoring
- Kidney problems: The drug's behavior in people with impaired kidney function has not been studied — tell your doctor if you have kidney disease
- Liver problems: Given the risk of liver injury associated with this drug, people with pre-existing liver conditions should discuss risks carefully with their doctor
🔬Pharmacokinetics — how your body processes it▾
After a subcutaneous injection, a large portion of glatiramer acetate is broken down (hydrolyzed) locally at the injection site before it can enter the bloodstream. Fragments that are not immediately broken down may enter the lymphatic system, reaching nearby lymph nodes. A smaller fraction enters the general circulation either intact or partially hydrolyzed. This extensive local breakdown means that systemic (whole-body) drug exposure is low compared to the injected dose.
📦How to store it▾
Store Glatopa refrigerated at 2°C to 8°C (36°F to 46°F). store Glatopa at room temperature, 15°C to 30°C (59°F to 86°F), for up to one month, but refrigeration is preferred. Do not freeze Glatopa.
📄 Written from Glatiramer Injection’s FDA-approved label information, summarized in plain language with AI, and reviewed by our pharmacy team before publication. Every point is grounded in that labeling — nothing is invented. How we use AI →
Supplements & herbs that interact with Glatiramer Injection
53 supplements and herbal products have documented interactions with Glatiramer Injection in the licensed clinical database we use. Most are manageable — but your pharmacist should know about everything you take, including vitamins and herbals.
- Moderate · 52
- Minor · 1
Educational information from a licensed clinical database (Natural Medicines) — see our data sources & update cadence. Not medical advice: an interaction being documented does not mean it will happen to you; do not start or stop medications or supplements without professional guidance.
🩺 Pharmacist Counseling Corner
Quick, plain-English answers to the questions patients ask most about Glatiramer Injection — the kind of thing our pharmacy team would talk through with you at the counter.
What exactly is glatiramer acetate used for? ▾
How do I give myself the injection, and does it matter where I inject? ▾
What's the most important side effect I should know about? ▾
I felt chest pain after my injection — should I be worried? ▾
Can I take this if I'm pregnant or trying to get pregnant? ▾
Is there anything I need to watch for with my skin at the injection site over time? ▾
Is Glatiramer Injection available over the counter? ▾
When was Glatiramer Injection first available? ▾
Who makes Glatiramer Injection? ▾
💬 Answers drafted from Glatiramer Injection’s FDA-approved label information, summarized in plain language with AI, and reviewed by our pharmacy team before publication. Grounded in that labeling — nothing is made up. How we use AI →
🧰 Keep exploring
💊 How Glatiramer Injection comes
Glatiramer Injection is available in 1 form. 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.
Injection
How this form is used
- Treats relapsing forms of multiple sclerosis (MS) in adults, including clinically isolated syndrome, relapsing-remitting MS, and active secondary progressive MS
- Available as two strengths: one injected once daily, the other injected three times per week — these are not interchangeable
- For subcutaneous (under the skin) injection only — never inject into a vein
- Remove the prefilled syringe from the refrigerator and let it warm at room temperature for 20 minutes before injecting
- Check the solution before use — it should be clear and colorless to slightly yellow; discard if you see particles or unusual color
- Rotate injection sites with each dose (arms, abdomen, hips, thighs); if using an optional autoinjector, confirm it is compatible with your specific glatiramer acetate product
📊 Glatiramer Injection across the U.S. market
How Glatiramer Injection 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.
Share of FDA-listed product records by manufacturer — FDA National Drug Code Directory. Record counts are not sales or prescription volume.
📈 How widely Glatiramer Injection is used
A general measure of how commonly Glatiramer Injection 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 Glatiramer Injection 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.
How commonly is Glatiramer Injection prescribed? Of the 1,596 medications we measure, Glatiramer Injection ranks #893 by Medicaid prescriptions — more than 44% of them.
Utilization by Glatiramer Injection 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.
1 ML glatiramer acetate 40 MG/ML Prefilled Syringe Most dispensed
Summed across the 4 of 16 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 1487361
1 ML glatiramer acetate 20 MG/ML Prefilled Syringe
Summed across the 3 of 15 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 1111641
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 Glatiramer Injection, 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 7 of 31 listed Glatiramer Injection NDCs with Medicaid activity.
🔍 Compare Glatiramer Injection products
A representative set of FDA-listed product records for Glatiramer Injection — 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.)
| Strength | Route | Manufacturer / Labeler | Category ⓘ | Details |
|---|---|---|---|---|
| 💊Injection | ||||
| 20 mg/mL | Subcutaneous | Ajenat Pharmaceuticals Llc | ANDA | View NDC → |
| 40 mg/mL | Subcutaneous | Ajenat Pharmaceuticals Llc | ANDA | View NDC → |
| 20 mg/mL | Subcutaneous | Bryant Ranch Prepack × 3 listings | ANDA | View NDC → |
| 40 mg/mL | Subcutaneous | Bryant Ranch Prepack × 3 listings | ANDA | View NDC → |
| 20 mg/mL | Subcutaneous | Italfarmaco SpA | ANDA | View NDC → |
| 40 mg/mL | Subcutaneous | Italfarmaco SpA | ANDA | View NDC → |
| 20 mg/mL | Subcutaneous | Mylan Pharmaceuticals Inc. × 3 listings | ANDA | View NDC → |
| 40 mg/mL | Subcutaneous | Mylan Pharmaceuticals Inc. × 3 listings | ANDA | View NDC → |
| 1 kg/kg | — | Natco Pharma Limited | BULK INGREDIENT | View NDC → |
| 20 mg/mL | Subcutaneous | Sandoz Inc × 5 listings | ANDA | View NDC → |
| 40 mg/mL | Subcutaneous | Sandoz Inc × 5 listings | ANDA | View NDC → |
| 20 mg/mL | Subcutaneous | Sun Pharmaceutical Industries, Inc. | ANDA | View NDC → |
| 40 mg/mL | Subcutaneous | Sun Pharmaceutical Industries, Inc. | ANDA | View NDC → |
| 20 mg/mL | Subcutaneous | Teva Neuroscience, Inc. × 4 listings | NDA | View NDC → |
| 40 mg/mL | Subcutaneous | Teva Neuroscience, Inc. × 4 listings | NDA | View NDC → |
| 20 mg/mL | Subcutaneous | Upsher-smith Laboratories, Llc | ANDA | View NDC → |
| 40 mg/mL | Subcutaneous | Upsher-smith Laboratories, Llc | ANDA | View NDC → |
| 20 mg/mL | Subcutaneous | Zydus Pharmaceuticals USA Inc. × 2 listings | ANDA | View NDC → |
| 40 mg/mL | Subcutaneous | Zydus Pharmaceuticals USA Inc. × 2 listings | ANDA | View NDC → |
Showing 43 of 43 products — FDA National Drug Code Directory. See every product, package size and price: browse all 43 Glatiramer Injection NDCs →
📈 What people report — real-world data (FDA FAERS)
After a medicine reaches the market, patients, doctors and drugmakers can send the FDA reports of problems they think may be linked to it. Here’s what’s been reported for Glatiramer Injection — a signal of what to watch for, not proof the drug caused it.
Source: openFDA, from the FDA Adverse Event Reporting System (FAERS). These are voluntary reports — they don’t prove the drug caused the effect, and counts reflect how often something was reported, not how often it actually happens. Reports also often name the very problem the medicine is taken for — a common reason to file one is that the drug didn’t help — so for a pain reliever you may see “pain” high on the list; that points to why the report was filed, not to the drug causing the symptom. This counts every report that lists Glatiramer Injection in any role, so the total runs higher than the FDA’s official dashboard, which counts only cases where the drug is the suspect. For the authoritative figures, see the FDA FAERS Public Dashboard. Always talk to your pharmacist or doctor.
🏛️ The road to your pharmacy
How Glatiramer Injection went from FDA review to the pharmacy shelf — the key milestones in its regulatory journey.
Source: Drugs@FDA.
🚨 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.
Source: openFDA drug enforcement (recall) reports.
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.
RxCUI 214582 2 dose forms · 3 strengths
-
Dose form (SCDF) Injectable Solution RxCUI 375829In current FDA listingsClinical drug / strength (SCD) acetate 20 MG/MLRxCUI 242276 -
Dose form (SCDF) Prefilled Syringe RxCUI 727577No current FDA listingClinical drug / strength (SCD) 1 ML glatiramer acetate 20 MG/MLRxCUI 11116411 ML glatiramer acetate 40 MG/MLRxCUI 1487361
Look up RxCUI 214582 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.
📦 Supply & shortage status
Whether Glatiramer Injection is in short supply in the U.S. right now, plus any shortage history the FDA has on record. A shortage usually reflects a manufacturing or demand issue — not a safety problem with the drug.
Source: openFDA, from the FDA Drug Shortages database.
🏷️ Sold under these brand names
🏭 Manufacturers & labelers
RxNorm drug class
Glatiramer Injection belongs to the Other immunostimulants class.
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.
🔬 Where this comes from
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.
How we combine label and product data
HelloPharmacist combines public FDA and NLM records; we don’t author the underlying clinical facts. We identified 13 FDA-filed SPL label sets within the page’s selected clinical scope after exact ingredient or ingredient-combination matching and applicable route/form matching. The representative label is the starting point for the displayed reference monograph; the 12 largest stored in-scope SPL records, which may include that representative, are compared section by section, and the longest available version of each section is retained. Forms, routes, brands, labelers, product-listed strengths, and product-record counts are aggregated separately from ingredient-matched FDA NDC Directory records; package records listed above are associated with the linked SPL; and the normalized concept hierarchy comes from NLM RxNorm.
Where a section is identified as AI-written, its plain-language text is generated from bounded label evidence. New draft drug pages remain in the admin review queue before first publication. Teva Neuroscience, Inc. is the representative DailyMed label linked for verification and dates; it is not the sole source used for the page.
This is general education, not medical advice — always consult your doctor or pharmacist about your medications and any medical condition. For the exact wording of the linked representative label, view that label on DailyMed; some displayed composite sections may come from other in-scope SPL labels. Learn how we use AI and our data sources & update cadence.