Pill Identifier App

Priftin Side Effects

Generic Name: rifapentine

Note: This page contains side effects data for the generic drug rifapentine. It is possible that some of the dosage forms included below may not apply to the brand name Priftin.

It is possible that some side effects of Priftin may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

For the Consumer

Applies to rifapentine: oral tablet

As well as its needed effects, rifapentine (the active ingredient contained in Priftin) may cause unwanted side effects that require medical attention.

If any of the following side effects occur while taking rifapentine, check with your doctor or nurse as soon as possible:

More common
  • Blood in urine
  • joint pain
  • lower back or side pain
  • swelling of feet or lower legs
Less common
  • Aggressive reaction
  • black, tarry stools
  • blood in stools
  • nausea
  • pinpoint red spots on skin
  • severe abdominal or stomach pain
  • sore throat and fever
  • unusual bleeding or bruising
  • unusual tiredness or weakness
  • yellow eyes or skin
  • vomiting
Rare
  • Diarrhea
  • dizziness
  • severe or continuing headaches
  • increase in blood pressure

Some rifapentine side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:

Less common
  • Acne
  • constipation
  • loss of appetite

This medicine commonly causes reddish-orange to reddish-brown discoloration of urine, stools, saliva, sputum, sweat, and tears. This side effect does not usually need medical attention.

For Healthcare Professionals

Applies to rifapentine: oral tablet

General

In general, there are no data concerning the adverse effects of rifapentine (the active ingredient contained in Priftin) in monotherapy. The following adverse effects have been reported during treatment in the intensive phase (i.e., rifapentine 2 times a week and isoniazid, pyrazinamide and ethambutol daily for 2 months) and the continuation phase (i.e., rifapentine and isoniazid once a week for 4 months) in a clinical study in which 361 patients were randomized to the rifapentine regimen.

Hematologic

Hematologic side effects have included neutropenia (12.5%), lymphopenia (12.7%), anemia (12.2%), leukopenia (6.6%), thrombocytosis (5.5%), leukocytosis (3%), neutrophilia (2.5%), thrombocytopenia (2.5%), polycythemia (2.2%), and lymphadenopathy (1.1%). Lymphocytosis, hematoma, purpura, hypochromic anemia, normocytic anemia, and thrombosis have been reported in less than 1% of patients.

Metabolic

Metabolic side effects have included hyperuricemia (31.9), hypoglycemia (10%), hyperkalemia (9.1%), increased nonprotein nitrogen (3.9%), hyperglycemia (3.6%), increased lactate dehydrogenase (1.4%), and hyperphosphatemia (1.4%). Weight decrease, diabetes mellitus, increased alkaline phosphatase, hypophosphatemia, hypercalcemia, hypovolemia, and weight increase have been reported in less than 1% of patients.

Hyperuricemia was most likely related to pyrazinamide as only 2 cases were reported during the continuation phase, when pyrazinamide was no longer part of the regimen.

Genitourinary

Genitourinary side effects have included proteinuria (13%), pyuria (21.6%), urinary tract infection (13.3%), urinary casts (8%), cystitis (1.7%), and hematuria (17.7%). Urethral disorder, dysuria, pyelonephritis, urinary incontinence, urination disorder, penis disorder, vaginitis, vaginal hemorrhage, positive cervical smear test, leukorrhea, male mastitis, prostatic disorder, and abortion have been reported in less than 1% of patients.

Respiratory

Respiratory side effects have included hemoptysis (8.3%), coughing (8%), upper respiratory tract infection (4.7%), bronchitis (2.5%), pharyngitis (1.9%), epistaxis (1.4%), and pleuritis (1.1%). Abnormal breath sounds, pneumothorax, pneumonia, pleural effusion, rhinitis, dyspnea, pneumonitis, sinusitis, increased sputum, pulmonary fibrosis, upper respiratory congestion, asthma, abnormal chest x-ray, bronchospasm, laryngeal edema, laryngitis, and respiratory disorder have been reported in less than 1% of patients.

Immunologic

Immunologic side effects have included influenza (7.8%), tuberculosis infection (2.5%), infection (1.4%), and herpes zoster (1.1%). Fungal infection, parasitic infection, and protozoan infection have been reported in less than 1% of patients.

Hepatic

Hepatic side effects have included elevated ALT (6.9%) and AST (5.8%). Bilirubinemia, hepatomegaly, jaundice, and hepatitis have been reported in less than 1% of patients.

Other

Other side effects have included back pain (6.9%), pain (6.1%), chest pain (5.5%), accident injury (4.7%), abdominal pain (1.9%), fever (1.4%), fatigue (1.1%), dependent edema (1.1%), at least one case of influenza-like syndrome, and orange-red discoloration of body tissues and/or fluids (e.g., skin, teeth, tongue, urine, tears, sputum, saliva, feces, sweat, and cerebral spinal fluid). Abnormal laboratory test, legs edema, asthenia, face edema, abscess, peripheral edema, malaise, ear disorder not specified, otitis media, earache, otitis externa, and tympanic membrane perforation have been reported in less than 1% of patients.

Dermatologic

Dermatologic side effects have included increased sweating (6.4%), rash (6.1%), pruritus (3.6%), acne (2.5%), skin disorder (1.4%), maculopapular rash (1.7%), and eczema (1.1%). Skin ulceration, urticaria, dry skin, furunculosis, skin discoloration, fungal dermatitis, nail disorder, alopecia, and erythematous rash have been reported in less than 1% of patients.

Gastrointestinal

Clostridium difficile should be suspected in any patient who develops persistent or severe diarrhea following rifapentine (the active ingredient contained in Priftin) therapy.

Gastrointestinal side effects have included anorexia (5.8%), nausea (2.5%), vomiting (2.5%), dyspepsia (2.8%), constipation (1.9%), diarrhea (1.9%), and hemorrhoids (1.4%). Tooth disorder, gastroenteritis, gastritis, esophagitis, cheilitis, dry mouth, pancreatitis, proctitis, salivary gland enlargement, tenesmus, and gastrointestinal disorder not specified have been reported in less than 1% of patients. Clostridium difficile associated diarrhea has been reported with almost all antibiotics, including the rifamycins.

Nervous system

Nervous system side effects have included headache (3.9%), dizziness (1.7%), tremor (1.4%), and insomnia (1.1%). Somnolence, seizure not specified, dysphonia, hypoesthesia, torticollis, hypertonia, hyporeflexia, meningitis, migraine headache, stupor, and taste loss have been reported in less than 1% of patients.

Musculoskeletal

Musculoskeletal side effects have included arthralgia (4.4%), arthritis (1.1%), arthrosis (1.1%), and gout (1.1%). Myalgia, myositis, bone fracture, muscle weakness, and muscle spasm have been reported in less than 1% of patients.

Cardiovascular

Cardiovascular side effects have included hypertension (1.7%). Syncope, tachycardia, palpitation, orthostatic hypotension, pericarditis, deep thrombophlebitis, vascular disorder, and vasodilation have been reported in less than 1% of patients.

Ocular

Ocular side effects have included conjunctivitis (2.5%). Eye pain and eye abnormality have been reported in less than 1% of patients.

Psychiatric

Psychiatric side effects have included anxiety, confusion, drug abuse, aggressive reaction, and agitation in less than 1% of patients.

Oncologic

Oncologic side effects have included pulmonary carcinoma, neoplasm not specified, carcinoma, and lipoma in less than 1% of patients.

Renal

Renal side effects have included increased BUN (less than 1%).

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

Hide
(web3)