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Allergic Reaction Medications to Antihistamine
Allergic Reaction Medications
Medications for allergic reactions work by blocking histamine or other inflammatory mediators or by reducing immune responses. Common categories include:
-
Antihistamines (H₁ blockers): These prevent histamine from causing allergy symptoms. Examples include diphenhydramine (Benadryl) and chlorpheniramine (older, sedating antihistamines) as well as newer, non-drowsy agents like cetirizine (Zyrtec), loratadine (Claritin) and fexofenadine (Allegra). (Antihistamines are available as pills, liquids, nasal sprays or eye drops.)
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Decongestants: These shrink swollen nasal tissues and ease congestion. For example, pseudoephedrine (Sudafed) or phenylephrine are oral decongestants, and oxymetazoline (Afrin) is a topical nasal spray. (Combo products also exist, e.g. Claritin®-D which contains loratadine + pseudoephedrine.)
-
Corticosteroids: These steroid medications suppress allergic inflammation. Intranasal corticosteroids like fluticasone (Flonase) or mometasone (Nasonex) are first-line for hay fever obstacles. Inhaled steroids (budesonide, fluticasone inhalers) treat allergic asthma, and powerful oral steroids (e.g. prednisone, methylprednisolone) are used for severe or systemic allergies.
-
Leukotriene inhibitors: These block another allergy mediator (leukotrienes). The main example is montelukast (Singulair), a daily pill used for allergic rhinitis and asthma).
-
Mast cell stabilizers: These prevent mast cells from releasing histamine. For instance, cromolyn sodium (available as a nasal spray or eye drops) is used prophylactically to reduce allergy symptoms when exposed to triggers.
-
Bronchodilators (beta-agonists): While not direct “anti-allergy” drugs, these inhalers relieve bronchospasm from allergic asthma. Short-acting inhaled beta-agonists like albuterol (ProAir, Ventolin) relax the airways when wheezing or tightness occurs.
-
Epinephrine (adrenaline): For life-threatening allergic reactions (anaphylaxis), injectable epinephrine is the drug of choice. Auto-injectors (e.g. EpiPen, Auvi-Q, Adrenaclick) deliver a fixed dose of epinephrine that rapidly opens airways and raises blood pressure. Patients with severe food, insect or drug allergies carry an epinephrine pen at all times.
Each of these medication types targets a different aspect of the allergic response. For example, antihistamines block histamine’s effects to reduce itching, sneezing and hives, whereas steroids reduce overall inflammation. In practice, mild to moderate allergy symptoms are managed with antihistamines, decongestants and nasal steroids, whereas epinephrine is reserved for anaphylaxis. Leukotriene modifiers and mast-cell stabilizers are additional options for chronic allergy control or asthma.
-
Sale
$ 4.29Diphenhydramine Injection 50 mg (Diphenhydramine 50 mg) (Rx)
5 reviewsDiphenhydramine 50 mg Diphenhydramine Injection 50 mg is a powerful, fast-acting solution for acute allergy relief. As an injectable form of the fa...
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Sale 21%
Original price $ 149.95Current price $ 119.00Diphenhydramine Hydrochloride Prefilled Syringes for Injection 50 mg/mL, 24 Pack (Rx)
Diphenhydramine Hydrochloride for Injection is a medication that is used to treat allergic reactions. It works by blocking the effects of histamine...
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Sale 25%
Original price $ 129.95Current price $ 97.00Diphenhydramine Injection 50 mg/mL Benadryl Injection Vial 1 mL x 25/Tray (Rx)
Fast-Acting Antihistamine Injection for Severe Allergic Reactions, Anaphylaxis, and Acute Allergy Emergencies Get rapid, life-saving allergy relief...
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Sale 9%
Original price $ 55.00Current price $ 49.95Promethazine Oral Solution 6.25 mg/5 mg per 5 mL 16 oz (Rx)
Promethazine Oral Solution 6.25 mg/5 mg per 5 mL is a highly effective medication used to treat a variety of conditions. This oral solution contain...
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Sale 23%
Original price $ 88.00Current price $ 68.00Promethazine DM Oral Solution 6.25 mg-15 mg/5 mL by Slate Run 437 mL (Rx)
Looking for relief from a nagging cough and congestion? Promethazine DM Oral Solution is the solution you need. With its powerful combination of in...
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Sale 36%
Original price $ 11.95Current price $ 7.59Promethazine HCl Tablets 12.5 mg by Amneal 100 Count (RX)
Experience relief with Promethazine HCl, a trusted solution for allergy symptoms, nausea, and more. Produced by Amneal Pharmaceuticals, this high-q...
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Sale 39%
Original price $ 12.95Current price $ 7.95Promethazine Hydrochloride 25 mg Tablets for Allergies, Nausea Relief & Sleep Aid 100 Count (RX)
2 reviewsPromethazine HCl Tablets 25 mg by Amneal is a prescription medication used to treat a variety of conditions including allergies, motion sickness, a...
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Sale 26%
Original price $ 22.95Current price $ 16.95Promethazine HCl Tablets 50 mg by Amneal 100 Count (RX)
Promethazine HCl Tablets 50 mg by Amneal is a prescription medication used to treat a variety of conditions including allergies, motion sickness, a...
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Sale 32%
Original price $ 13.95Current price $ 9.50Hydroxyzine HCL Tablets 10 mg Strength 100 Count (RX)
Hydroxyzine HCL tablets, also known as hydroxyzine hydrochloride, are commonly used for treating anxiety, tension, and itching due to various condi...
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Sale 50%
Original price $ 13.95Current price $ 6.95Hydroxyzine Hydrochloride 25 mg Tablets by Avet Pharma 100 Count (RX)
Fast-Acting Antihistamine for Allergy, Anxiety, Itching & Sleep Relief Comprehensive Symptom Control for Allergies, Anxiety, Pruritus (Itching)...
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Sale 35%
Original price $ 19.95Current price $ 12.89Hydroxyzine Hydrochloride Tablets 50 mg Strength 100 Count (RX)
Hydroxyzine Hydrochloride Tablets are an effective prescription medication designed to offer relief from a variety of conditions. Each tablet conta...
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Sale 14%
Original price $ 1,599.95Current price $ 1,375.00Hydroxyzine HCL Injection 25 mg/mL Single Dose Vial 1 mL x 25/Pack (RX)
Hydroxyzine HCL injection is used in the treatment of nausea and vomiting caused by various conditions such as surgery, anesthesia, or chemotherapy...
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Sale 29%
Original price $ 2,450.00Current price $ 1,750.00Hydroxyzine HCL Injection 50 mg/mL Single Dose Vial 1 mL x 25/Pack (RX)
Hydroxyzine HCL injection is used in the treatment of nausea and vomiting caused by various conditions such as surgery, anesthesia, or chemotherapy...
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Sale 16%
Original price $ 1,895.95Current price $ 1,585.00Hydroxyzine HCL Injection 50 mg/mL Single Dose Vial 2 mL x 25/Pack (RX)
Hydroxyzine HCL injection is used in the treatment of nausea and vomiting caused by various conditions such as surgery, anesthesia, or chemotherapy...
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Sale 25%
Original price $ 1,150.00Current price $ 859.00Hydroxyzine HCL Syrup Oral Solution 10 mg/mL Alcohol Free 473 mL (RX)
Hydroxyzine HCL Syrup 10 mg/mL is an antihistamine used to treat allergy symptoms such as itching, sneezing, and runny nose. It is also effective i...
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Sale 14%
Original price $ 699.00Current price $ 599.00Clemastine Fumarate Antihistamine Tablets 2.68 mg 100 Count (RX)
Clemastine fumarate is an antihistamine medication primarily used to relieve symptoms of allergies, such as sneezing, runny nose, and watery eyes. ...
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Sale 21%
Original price $ 499.95Current price $ 395.00Clemastine Fumarate Syrup Antihistamine Oral Solution 0.5mg/5 mL, 120 mL (RX)
Clemastine fumarate is an antihistamine medication primarily used to relieve symptoms of allergies, such as sneezing, runny nose, and watery eyes. ...
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Sale 31%
Original price $ 79.95Current price $ 54.95Olopatadine Hydrochloride Nasal Spray (Nasal Solution) 665 mcg (RX)
Olopatadine Hydrochloride nasal spray is used to treat symptoms of seasonal allergic rhinitis, such as nasal congestion, sneezing, and runny or itc...
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Sale 39%
Original price $ 65.95Current price $ 39.95Promethazine Hydrochloride Oral Solution 6.25 mg/5 mg by Quiagen 16 oz (Rx)
Fast Relief for Allergy, Nausea, Vomiting & Motion Sickness Promethazine Hydrochloride Oral Solution 6.25 mg/5 mL by Quagen Pharma is a trusted...
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Sale 10%
Original price $ 59.95Current price $ 54.00Diphenhydramine Injection 50 mg/mL Single-Dose Vials 1 mL x 25/Pack (Rx)
Diphenhydramine Injection 50 mg – Overview Diphenhydramine injection is the injectable form of diphenhydramine hydrochloride (Benadryl), a first-ge...
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Allergic Reaction Medications
Medications for allergic reactions work by blocking histamine or other inflammatory mediators or by reducing immune responses. Common categories include:
-
Antihistamines (H₁ blockers): These prevent histamine from causing allergy symptoms. Examples include diphenhydramine (Benadryl) and chlorpheniramine (older, sedating antihistamines) as well as newer, non-drowsy agents like cetirizine (Zyrtec), loratadine (Claritin) and fexofenadine (Allegra). (Antihistamines are available as pills, liquids, nasal sprays or eye drops.)
-
Decongestants: These shrink swollen nasal tissues and ease congestion. For example, pseudoephedrine (Sudafed) or phenylephrine are oral decongestants, and oxymetazoline (Afrin) is a topical nasal spray. (Combo products also exist, e.g. Claritin®-D which contains loratadine + pseudoephedrine.)
-
Corticosteroids: These steroid medications suppress allergic inflammation. Intranasal corticosteroids like fluticasone (Flonase) or mometasone (Nasonex) are first-line for hay fever obstacles. Inhaled steroids (budesonide, fluticasone inhalers) treat allergic asthma, and powerful oral steroids (e.g. prednisone, methylprednisolone) are used for severe or systemic allergies.
-
Leukotriene inhibitors: These block another allergy mediator (leukotrienes). The main example is montelukast (Singulair), a daily pill used for allergic rhinitis and asthma).
-
Mast cell stabilizers: These prevent mast cells from releasing histamine. For instance, cromolyn sodium (available as a nasal spray or eye drops) is used prophylactically to reduce allergy symptoms when exposed to triggers.
-
Bronchodilators (beta-agonists): While not direct “anti-allergy” drugs, these inhalers relieve bronchospasm from allergic asthma. Short-acting inhaled beta-agonists like albuterol (ProAir, Ventolin) relax the airways when wheezing or tightness occurs.
-
Epinephrine (adrenaline): For life-threatening allergic reactions (anaphylaxis), injectable epinephrine is the drug of choice. Auto-injectors (e.g. EpiPen, Auvi-Q, Adrenaclick) deliver a fixed dose of epinephrine that rapidly opens airways and raises blood pressure. Patients with severe food, insect or drug allergies carry an epinephrine pen at all times.
Each of these medication types targets a different aspect of the allergic response. For example, antihistamines block histamine’s effects to reduce itching, sneezing and hives, whereas steroids reduce overall inflammation. In practice, mild to moderate allergy symptoms are managed with antihistamines, decongestants and nasal steroids, whereas epinephrine is reserved for anaphylaxis. Leukotriene modifiers and mast-cell stabilizers are additional options for chronic allergy control or asthma.
