Sodium Chloride 0.225% w/v and Glucose 5% w/v B.P Intravenous Infusion Price

Overview

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Name

Sulfasalazine

Precaution

Sulfasalazine is a medication primarily used to treat **inflammatory bowel diseases** (such as **ulcerative colitis**) and **rheumatoid arthritis**. Before starting sulfasalazine, patients should consider the following precautions: - **Allergy to Sulfonamides or Salicylates**: Sulfasalazine is a sulfonamide drug, and patients with an **allergy to sulfonamides** or **aspirin** (salicylates) should avoid using it, as it may cause allergic reactions such as **rash**, **fever**, **swelling**, or even more severe reactions like **anaphylaxis**. - **Liver Function**: Sulfasalazine may cause liver damage, so it should be used with caution in patients with **liver disease** (e.g., cirrhosis or hepatitis). Regular monitoring of liver function tests is recommended during treatment. - **Kidney Function**: This medication may also affect kidney function. Patients with **renal impairment** or a history of **kidney disease** should use sulfasalazine carefully. Monitoring of renal function (creatinine and blood urea nitrogen) is advised during therapy. - **Blood Dyscrasias**: Sulfasalazine can cause **blood disorders** such as **leukopenia**, **thrombocytopenia**, or **anemia**. It is crucial to monitor **complete blood count (CBC)** regularly throughout treatment. - **Pregnancy and Lactation**: Sulfasalazine is considered **safe in pregnancy**, particularly for the treatment of **ulcerative colitis**. However, it should be used under the guidance of a healthcare provider. It is present in breast milk, so nursing mothers should consult a doctor to evaluate the risk/benefit of its use. - **G6PD Deficiency**: Patients with **G6PD deficiency** (a genetic disorder that affects red blood cells) are at increased risk of hemolysis (breakdown of red blood cells) while on sulfasalazine and should avoid its use unless prescribed by a doctor with close monitoring.

Indication

Sulfasalazine is used to treat several conditions related to inflammation and immune system dysfunction: - **Ulcerative Colitis**: Sulfasalazine is used as a **first-line treatment** for **mild to moderate ulcerative colitis**, an inflammatory bowel disease. It works by reducing the inflammation in the colon, thus helping control symptoms like diarrhea and rectal bleeding. - **Rheumatoid Arthritis**: It is also prescribed for the treatment of **rheumatoid arthritis (RA)**, particularly in patients who are not responding well to other medications or who have mild to moderate disease. - **Crohn’s Disease**: In some cases, sulfasalazine may be used to treat **Crohn's disease**, another type of inflammatory bowel disease, although it is more commonly used for ulcerative colitis. - **Other Inflammatory Conditions**: Sulfasalazine can also be used to manage other inflammatory conditions, such as **psoriatic arthritis** and **ankylosing spondylitis**, although these are off-label uses.

Contra indication

There are several conditions where sulfasalazine should not be used: - **Hypersensitivity**: Sulfasalazine is contraindicated in individuals with a **known hypersensitivity** to **sulfonamides**, **salicylates**, or any of its components. This can result in serious allergic reactions. - **Severe Liver or Kidney Disease**: Sulfasalazine is contraindicated in patients with **severe liver** or **renal impairment** because of the risk of worsening these conditions. - **Blood Disorders**: Sulfasalazine should not be used in patients with **blood dyscrasias**, such as **bone marrow suppression** or **low white blood cell counts**, as it can exacerbate these conditions. - **Intestinal Obstruction**: It should be avoided in patients with a history of **intestinal obstruction** or **porphyria**, as it may worsen these conditions.

Side Effect

Common and severe side effects of sulfasalazine include: - **Common Side Effects**: - **Gastrointestinal Issues**: Many patients experience **nausea**, **vomiting**, **anorexia**, or **abdominal pain** when starting sulfasalazine. - **Headache**: Some people report mild headaches, which are typically transient. - **Rash**: A rash is a common side effect, but it may also indicate an allergic reaction, especially if accompanied by fever or swelling. - **Fatigue**: Fatigue and malaise are also common, especially when the medication is first started. - **Serious Side Effects**: - **Blood Disorders**: Sulfasalazine can cause **leukopenia** (low white blood cells), **thrombocytopenia** (low platelets), and **anemia**. Regular blood count monitoring is required during treatment. - **Liver Toxicity**: Sulfasalazine may lead to **liver dysfunction**, including elevated liver enzymes or jaundice. Monitoring liver function is essential. - **Kidney Toxicity**: In rare cases, sulfasalazine can cause **kidney damage** or **renal failure**, especially in patients with pre-existing renal conditions. - **Severe Allergic Reactions**: **Anaphylaxis**, **fever**, **swelling**, or **difficulty breathing** require immediate discontinuation of sulfasalazine and emergency treatment.

Pregnancy Category ID

2

Mode of Action

Sulfasalazine is a **disease-modifying anti-rheumatic drug (DMARD)** that works by modulating the immune response and reducing inflammation. It consists of two active components: - **Sulfonamide**: Sulfasalazine is metabolized in the body to **5-aminosalicylic acid (5-ASA)**, which is the active ingredient responsible for its anti-inflammatory effects, particularly in the intestines. 5-ASA helps to suppress the production of **pro-inflammatory cytokines** and other immune system components that contribute to inflammation in conditions like ulcerative colitis. - **Azo bond**: The azo bond in sulfasalazine ensures that the drug is delivered to the **colon** in its active form, where it exerts its anti-inflammatory effects. The sulfonamide component works more directly on **immune system modulation** to reduce the inflammatory response. - **Modulating Immune Cells**: By suppressing the activity of **T-cells** and other immune cells involved in the inflammatory process, sulfasalazine helps control autoimmune diseases like **rheumatoid arthritis**.

Interaction

Sulfasalazine has several important interactions with other medications and substances: - **Methotrexate**: When used in combination with **methotrexate** for the treatment of rheumatoid arthritis, sulfasalazine may increase the risk of **liver toxicity**, so liver function should be monitored closely. - **Warfarin and Anticoagulants**: Sulfasalazine may alter the effects of **warfarin**, a common anticoagulant, potentially leading to an increased risk of **bleeding**. Patients on blood thinners should have their **INR** monitored regularly. - **Azathioprine and 6-Mercaptopurine**: Sulfasalazine may increase the effects of **azathioprine** or **6-mercaptopurine** (immunosuppressive drugs), leading to an increased risk of **bone marrow suppression**. Regular blood counts are recommended. - **Iron Supplements**: Sulfasalazine can interfere with the absorption of **iron supplements**. It is recommended to take these supplements at least **2 hours apart** from sulfasalazine. - **Digoxin**: Sulfasalazine may affect the absorption of **digoxin**, a medication used to treat heart failure, requiring careful monitoring of digoxin levels.

Pregnancy Category Note

Pregnancy category: B; D if used for prolonged periods or near term; increased potential for kernicterus in the newborn

Adult Dose

The dosage of sulfasalazine depends on the condition being treated: - **Ulcerative Colitis**: - Initial dose: **2 grams daily** (usually in divided doses), which may be increased to a maximum of **4 grams daily** for moderate to severe disease. - **Rheumatoid Arthritis**: - Initial dose: **500 mg to 1 gram daily** (typically divided into 2 doses), which may be increased up to a maximum of **2 grams daily** depending on the patient’s response and tolerance.

Child Dose

For children, the typical starting dose of sulfasalazine for **ulcerative colitis** is generally **40 mg/kg/day**, with a maximum dose of **2 grams daily**. For **rheumatoid arthritis**, the pediatric dose will vary, and careful monitoring of potential side effects is essential due to the risk of **blood disorders** and **gastrointestinal disturbances**. As always, patients must consult their healthcare provider before starting sulfasalazine to ensure it is the right treatment for their condition and to address any specific concerns about dosage and potential side effects. Regular monitoring is crucial to minimize the risk of adverse effects.

Renal Dose

For patients with **renal impairment**, sulfasalazine should be used with caution. Reduced kidney function may increase the risk of **sulfasalazine toxicity** and **kidney damage**. Dosage adjustments are generally required, and patients should be monitored regularly for **renal function**, particularly in those with a **history of kidney disease**. In some cases, sulfasalazine may be contraindicated for patients with **severe renal dysfunction**.

Administration

Information not available