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Para-aminosalicylic Acid: Uses, Dosage, and Side Effects Explained
Summary of Key Points
Para-aminosalicylic acid is an antibiotic primarily used to treat tuberculosis and other bacterial infections. It works by inhibiting bacterial growth and is often combined with other medications to prevent resistance. Common side effects include gastrointestinal issues such as nausea and diarrhea. Always consult your healthcare provider before starting or adjusting your dose. You can also schedule a telemedicine appointment with us for personalized care.
Names of Medication
US Brand Name: Paser (Para-aminosalicylic acid)
The “generic name” refers to the active ingredient in the medication, which is not tied to a specific brand. The generic name for this medication is listed in parentheses.
Pharmacologic Category
Antitubercular Agents
Aminosalicylic Acids
Dosing for Para-aminosalicylic Acid
Tuberculosis (TB): For adults, the typical dose is 4 grams taken orally 2 to 3 times daily. Treatment usually lasts for 24 months, depending on the severity of the condition and response to therapy. Always use this medication in combination with other TB drugs.
Leprosy: The usual dose is 4 grams taken orally 2 to 3 times daily, in combination with other medications. Treatment duration varies but can last several months to years.
Mycobacterial Infections: 4 grams taken orally 2 to 3 times daily, often combined with other antibiotics. The duration of treatment depends on the type and severity of the infection.
Bacterial Infections: The dose is 4 grams taken orally 2 to 3 times daily, with treatment lasting from several weeks to months, depending on the infection.
Chronic Granulomatous Disease: 4 grams taken orally 2 to 3 times daily. Treatment duration varies based on individual response.
Nocardiosis: 4 grams taken orally 2 to 3 times daily. Treatment may last several months.
Actinomycosis: 4 grams taken orally 2 to 3 times daily, often in combination with other antibiotics. Treatment duration can be long-term, lasting several months.
Rhodococcus Infections: 4 grams taken orally 2 to 3 times daily. Treatment duration depends on the severity of the infection.
Brucellosis: 4 grams taken orally 2 to 3 times daily, usually combined with other antibiotics. Treatment typically lasts several weeks.
Listeriosis: 4 grams taken orally 2 to 3 times daily, often in combination with other antibiotics. Treatment duration varies.
Always consult your healthcare provider before adjusting your dose. If you have any concerns or need guidance, you can schedule a telemedicine appointment with one of our providers today.
Dosage Forms and Strengths of PAS Medication
Granules for Oral Solution: 4 grams per packet
Administration Instructions for Para-aminosalicylic Acid
Para-aminosalicylic acid should be taken with food to minimize stomach upset. Mix the granules with a small amount of food or drink, such as applesauce or yogurt, and consume immediately. Do not chew the granules. Follow your healthcare provider’s instructions carefully and complete the full course of treatment, even if you start feeling better.
Adverse Reactions and PAS Side Effects
Nausea and Vomiting (Common): Many patients experience nausea or vomiting, especially when starting treatment. Taking the medication with food can help reduce these effects.
Diarrhea (Common): Loose stools may occur. If diarrhea becomes severe, consult your healthcare provider.
Abdominal Pain (Common): Some patients report stomach discomfort. This is usually mild and can be managed by taking the medication with meals.
Allergic Reactions (Rare): Symptoms may include rash, itching, or swelling. Seek medical attention if you experience any signs of an allergic reaction.
Liver Toxicity (Rare): In rare cases, para-aminosalicylic acid may affect liver function. Your doctor may monitor your liver enzymes during treatment.
Contraindications for Para-aminosalicylic Acid
A contraindication is a specific situation or condition where a particular medication should not be used because it may be harmful to the patient. For Para-aminosalicylic acid, there are several contraindications to be aware of:
Severe liver disease: Para-aminosalicylic acid is processed by the liver, and in patients with severe liver disease, the medication can accumulate to dangerous levels, potentially causing liver toxicity.
Severe kidney disease: Since the kidneys help remove medications from the body, impaired kidney function can lead to a buildup of para-aminosalicylic acid, increasing the risk of side effects.
Hypersensitivity or allergy to Para-aminosalicylic acid: If you have had an allergic reaction to this medication in the past, taking it again could cause a serious allergic response, including rash, swelling, or difficulty breathing.
Gastrointestinal disorders: Patients with a history of severe gastrointestinal issues, such as ulcers or chronic diarrhea, may experience worsening symptoms when taking para-aminosalicylic acid, as it can irritate the digestive tract.
If you have any of these conditions, it is important to discuss them with your healthcare provider before starting para-aminosalicylic acid. Our telemedicine providers are available to help you determine if this medication is safe for you.
Drug to Drug Interactions with Para-aminosalicylic Acid
Para-aminosalicylic acid (PAS) can interact with other medications, potentially increasing side effects or reducing the effectiveness of your treatment. Some known drug interactions include:
- Isoniazid (Nydrazid): Commonly used to treat tuberculosis, combining Isoniazid with Para-aminosalicylic acid may increase the risk of liver toxicity.
- Rifampin (Rifadin): Another antitubercular drug, Rifampin can reduce the effectiveness of Para-aminosalicylic acid by speeding up its breakdown in the liver.
- Digoxin (Lanoxin): Often prescribed for heart conditions, Digoxin levels may decrease when taken with Para-aminosalicylic acid, potentially reducing its effectiveness.
- Vitamin B12 supplements: Para-aminosalicylic acid can interfere with the absorption of Vitamin B12, which may lead to a deficiency over time.
If you are taking any of these or other medications, it’s important to inform your healthcare provider. Our telemedicine team can help manage these interactions and adjust your treatment plan as necessary.
Para-aminosalicylic Acid in Pregnancy
Is it safe to take Para-aminosalicylic acid during pregnancy?
The safety of Para-aminosalicylic acid for treating tuberculosis during pregnancy is not fully established. While it may be used in some cases, it should only be taken if the potential benefits outweigh the risks. If you are pregnant or planning to become pregnant, it’s essential to discuss your treatment options with your healthcare provider. Our telemedicine providers can assist you in making an informed decision about tuberculosis treatment during pregnancy.
Para-aminosalicylic Acid While Breastfeeding
Is it safe to take Para-aminosalicylic acid while breastfeeding?
Para-aminosalicylic acid passes into breast milk in small amounts. While it is generally considered safe for breastfeeding mothers, there is limited data on its effects on nursing infants. If you are breastfeeding, it’s important to weigh the benefits and risks with your healthcare provider. Our telemedicine providers can guide you through this decision and help you choose the best treatment for your situation.
Estimated Cost of Para-aminosalicylic Acid Medication
The estimated cost of a 30-day supply of Para-aminosalicylic acid without insurance, using a GoodRX coupon, ranges from $300 to $500, depending on the pharmacy and location. Prices can vary, so it’s a good idea to check with your local pharmacy or use a coupon service like GoodRX to find the best price for your PAS medication.
Possible Alternatives to Para-aminosalicylic Acid
If Para-aminosalicylic acid is not suitable for you, there are alternative treatments and lifestyle changes that may help, depending on the condition being treated. Always consult your healthcare provider before making any changes to your treatment plan. Our telemedicine providers are available to discuss these options with you.
- Tuberculosis: Alternative antitubercular drugs include Rifampin, Isoniazid, and Ethambutol. Lifestyle changes, such as improving nutrition and avoiding tobacco, can also support recovery.
- Leprosy: Alternatives include Dapsone and Clofazimine. Early diagnosis and treatment are crucial to preventing complications.
- Mycobacterial infections: Other antibiotics, such as Clarithromycin or Azithromycin, may be used. Maintaining a strong immune system through a healthy lifestyle can also help.
- Bacterial infections: Depending on the bacteria, alternative antibiotics like Amoxicillin or Ciprofloxacin may be prescribed. Good hygiene and proper wound care can help prevent infections.
- Chronic granulomatous disease: Prophylactic antibiotics like Trimethoprim-sulfamethoxazole may be used. Avoiding exposure to certain bacteria and fungi can reduce the risk of infection.
- Nocardiosis: Sulfonamides, such as Trimethoprim-sulfamethoxazole, are often used. Early treatment is essential to prevent complications.
- Actinomycosis: Penicillin is the first-line treatment. Maintaining good oral hygiene can help prevent this infection.
- Rhodococcus infections: Erythromycin or Clarithromycin may be used as alternatives. Early diagnosis and treatment are key to managing this condition.
- Brucellosis: Doxycycline and Rifampin are common alternatives. Avoiding unpasteurized dairy products can help prevent infection.
- Listeriosis: Ampicillin or Gentamicin are often used. Pregnant women should avoid high-risk foods like soft cheeses and deli meats to reduce the risk of infection.
Recent Updates on Para-aminosalicylic Acid Research
Recent studies on Para-aminosalicylic acid have focused on its role in treating drug-resistant tuberculosis. Researchers are investigating its effectiveness when combined with newer medications to combat multi-drug-resistant strains. Some studies suggest that Para-aminosalicylic acid may help reduce bacterial load in patients with resistant tuberculosis, though further research is needed to confirm these findings. Ongoing clinical trials are also exploring its potential use in treating other mycobacterial infections.
If you have questions about how this research may impact your treatment, our telemedicine providers are available to help you stay informed and make the best decisions for your health.
