Oxantel/praziquantel/pyrantel

Oxantel/praziquantel/pyrantel Medicine

Contraindications

See also:
What is the most important information I should know about Praziquantel?

Praziquantel (praziquantel) is contraindicated in patients who previously have shown hypersensitivity to the drug or any of the excipients. Since parasite destruction within the eye may cause irreversible lesions, ocular cysticercosis must not be treated with this compound.

Concomitant administration with strong Cytochrome P450 (P450) inducers, such as rifampin, is contraindicated since therapeutically effective blood levels of praziquantel may not be achieved. In patients receiving rifampin who need immediate treatment for schistosomiasis, alternative agents for schistosomiasis should be considered. However, if treatment with praziquantel is necessary, rifampin should be discontinued 4 weeks before administration of praziquantel. Treatment with rifampin can then be restarted one day after completion of praziquantel treatment.

See also:
What is the most important information I should know about Pyrantel?

This medicine is contraindicated in patients with known hypersensitivity to the benzimidazole class of compounds or any components of this medicine.

Undesirable effects

Headache, abdominal pain, diarrhoea

See also:
What are the possible side effects of Praziquantel?

Applies to praziquantel: oral tablet

In addition to its needed effects, some unwanted effects may be caused by praziquantel (the active ingredient contained in Praziquantel). In the event that any of these side effects do occur, they may require medical attention.

Major Side Effects

You should check with your doctor immediately if any of these side effects occur when taking praziquantel:

Incidence not known:

  • Abdominal or stomach discomfort with or without nausea
  • abdominal or stomach pain
  • black, tarry stools
  • bloody diarrhea
  • chest pain or discomfort
  • chills
  • convulsions
  • cough
  • dizziness
  • fainting
  • fast, slow, or irregular heartbeat
  • fever
  • hives
  • hoarseness
  • irritation
  • itching
  • joint pain, stiffness, or swelling
  • lightheadedness, dizziness, or fainting
  • painful or difficult urination
  • rash
  • redness of the skin
  • severe abdominal or stomach pain
  • shortness of breath
  • slow or irregular heartbeat
  • sore throat
  • sores, ulcers, or white spots on the lips or in the mouth
  • sweating
  • swelling of the eyelids, face, lips, hands, or feet
  • swollen glands
  • tightness in the chest
  • troubled breathing or swallowing
  • unusual bleeding or bruising
  • unusual tiredness or weakness
  • wheezing
Minor Side Effects

Some of the side effects that can occur with praziquantel may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

More common:

  • Drowsiness
  • increased sweating
  • general feeling of discomfort or illness
  • nausea or vomiting
Less common:
  • Skin rash, hives, or itching
Incidence not known:
  • Difficulty with moving
  • dizziness or lightheadedness
  • feeling of constant movement of self or surroundings
  • headache
  • hives or welts
  • joint pain
  • lack or loss of strength
  • loss of appetite
  • muscle aching or cramping
  • muscle pains or stiffness
  • redness of the skin
  • sensation of spinning
  • sleepiness or unusual drowsiness
  • swollen joints
  • weight loss

See also:
What are the possible side effects of Pyrantel?

Applies to pyrantel: oral suspension, oral tablet, oral tablet chewable

In addition to its needed effects, some unwanted effects may be caused by pyrantel (the active ingredient contained in Pyrantel). In the event that any of these side effects do occur, they may require medical attention.

Severity: Moderate

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

Rare

  • Skin rash
Minor Side Effects

Some of the side effects that can occur with pyrantel may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

Less common:

  • Abdominal or stomach cramps or pain
  • diarrhea
  • dizziness
  • drowsiness
  • headache
  • irritability
  • loss of appetite
  • nausea or vomiting
  • trouble in sleeping

Therapeutic indications

An indication is a term used for the list of condition or symptom or illness for which the medicine is prescribed or used by the patient. For example, acetaminophen or paracetamol is used for fever by the patient, or the doctor prescribes it for a headache or body pains. Now fever, headache and body pains are the indications of paracetamol. A patient should be aware of the indications of medications used for common conditions because they can be taken over the counter in the pharmacy meaning without prescription by the Physician.

Oral

Trichuris trichiura

Adult: 10-20 mg/kg as single dose; with pyrantel: 10-20 mg/kg as single dose

Child: 10-20 mg/kg as single dose; with pyrantel: 10-20 mg/kg as single dose

Oral

Enterobiasis; Hookworm infections; Trichostrongylus orientalis

Adult: With pyrantel: 10-20 mg/kg as single dose

Child: With pyrantel; 10-20 mg/kg as single dose

An indication is a term used for the list of condition or symptom or illness for which the medicine is prescribed or used by the patient. For example, acetaminophen or paracetamol is used for fever by the patient, or the doctor prescribes it for a headache or body pains. Now fever, headache and body pains are the indications of paracetamol. A patient should be aware of the indications of medications used for common conditions because they can be taken over the counter in the pharmacy meaning without prescription by the Physician.

Praziquantel (praziquantel) is indicated for the treatment of infections due to: all species of schistosoma (for example, Schistosoma mekongi, Schistosoma japonicum, Schistosoma mansoni and Schistosoma hematobium), and infections due to the liver flukes, Clonorchis sinensis/Opisthorchis viverrini (approval of this indication was based on studies in which the two species were not differentiated).

An indication is a term used for the list of condition or symptom or illness for which the medicine is prescribed or used by the patient. For example, acetaminophen or paracetamol is used for fever by the patient, or the doctor prescribes it for a headache or body pains. Now fever, headache and body pains are the indications of paracetamol. A patient should be aware of the indications of medications used for common conditions because they can be taken over the counter in the pharmacy meaning without prescription by the Physician.

Oral

Single or mixed infections due to susceptible worms

Adult: 10 mg/kg as a single dose.

Child: 10 mg/kg as a single dose.

Oral

Ascariasis

Adult: 5 mg/kg as a single dose. Max: 1 g/dose. For mass treatment programmes: 2.5 mg/kg as a single dose given 3-4 times a yr.

Oral

Necatoriasis

Adult: 10 mg/kg daily for 3-4 days or 20 mg/kg daily for 2 days.

Oral

Enterobiasis

Adult: 10 mg/kg repeated once after 2-4 wk. Max dose: 1 g/dose.

Oral

Trichinosis

Adult: 10 mg/kg daily for 5 days.

Praziquantel is used to treat infections caused by parasites such as liver flukes (worms) or schistosoma (blood fluke). These infections are also known as snail fever, schistosomiasis, or bilharziasis. Praziquantel may also be used for other worm infections as determined by your doctor. However, it will not work for pinworms or other roundworms.

Praziquantel belongs to the family of medicines called anthelmintics. Anthelmintics are used in the treatment of worm infections. Praziquantel works by causing severe spasms and paralysis of the worms' muscles. Some kinds of worms are then passed in the stool. However, you may not notice them since they are sometimes completely destroyed in the intestine.

praziquantel is available only with your doctor's prescription.

Once a medicine has been approved for marketing for a certain use, experience may show that it is also useful for other medical problems. Although these uses are not included in the product labeling, praziquantel is used in certain patients with the following medical conditions:

  • Some kinds of fluke infections.
  • Some kinds of tapeworm infections.

Pyrantel belongs to the family of medicines called anthelmintics. Anthelmintics are used in the treatment of worm infections.

Pyrantel is used to treat pinworms (enterobiasis; oxyuriasis).

pyrantel may also be used for other worm infections as determined by your doctor.

Pyrantel works by paralyzing the worms. They are then passed in the stool.

Once a medicine has been approved for marketing for a certain use, experience may show that it is also useful for other medical problems. Although this use is not included in product labeling, pyrantel is used in certain patients with the following medical condition:

  • Common roundworm infection
  • Hookworm infection
  • More than one worm infection at a time

For patients taking pyrantel for hookworm infection :

  • Anemia (iron-poor blood) may occur in patients with hookworm infections. Therefore, your doctor may want you to take iron supplements to help clear up the anemia. If so, it is important to take iron every day while you are being treated for hookworms. Do not miss any doses. Your doctor may also want you to keep taking iron supplements for up to 6 months after you stop taking pyrantel. If you have any questions about this, check with your doctor.

Name of the medicinal product

Oxantel/Praziquantel/Pyrantel

Qualitative and quantitative composition

An anthelmintic used in most schistosome and many cestode infestations. [PubChem]

Pyrantel is an antinematodal thiophene

Special warnings and precautions for use

Use praziquantel as directed by your doctor. Check the label on the medicine for exact dosing instructions.

  • Take praziquantel with a full glass of water during meals.
  • Do not crush or chew before swallowing.
  • Take your doses at least 4 hours apart but not more than 6 hours apart unless directed otherwise by your doctor.
  • If you miss a dose of praziquantel, take it as soon as possible. If it less than 4 hours until your next dose, contact your doctor to see if you need to establish a new dosing schedule.

Ask your health care provider any questions you may have about how to use praziquantel.

There are specific as well as general uses of a drug or medicine. A medicine can be used to prevent a disease, treat a disease over a period or cure a disease. It can also be used to treat the particular symptom of the disease. The drug use depends on the form the patient takes it. It may be more useful in injection form or sometimes in tablet form. The drug can be used for a single troubling symptom or a life-threatening condition. While some medications can be stopped after few days, some drugs need to be continued for prolonged period to get the benefit from it.

Use Pyrantel as directed by your doctor. Check the label on the medicine for exact dosing instructions.

  • Pyrantel may be taken on an empty stomach or with food, milk, or juice.
  • Shake well before using a dose of Pyrantel.
  • Use a measuring device marked for medicine dosing. Ask your pharmacist for help if you are unsure of how to measure your dose.
  • Wear tight underwear both day and night while taking Pyrantel.
  • Pyrantel is usually prescribed as a single dose.
  • Only one dose of Pyrantel is required. If you forget to take Pyrantel, take it as soon as you remember.

Ask your health care provider any questions you may have about how to use Pyrantel.

There are specific as well as general uses of a drug or medicine. A medicine can be used to prevent a disease, treat a disease over a period or cure a disease. It can also be used to treat the particular symptom of the disease. The drug use depends on the form the patient takes it. It may be more useful in injection form or sometimes in tablet form. The drug can be used for a single troubling symptom or a life-threatening condition. While some medications can be stopped after few days, some drugs need to be continued for prolonged period to get the benefit from it.Use: Labeled Indications

Helminths: Treatment of infections in patients ≥1 year caused by the following: All species of Schistosoma (eg, Schistosoma mekongi, Schistosoma japonicum, Schistosoma mansoni, Schistosoma haematobium) and the liver flukes Clonorchis sinensis/Opisthorchis viverrini

Off Label UsesNeurocysticercosis, parenchymal

Data from the phase II and phase III portions of a randomized, double blind, placebo-controlled study supports the use of praziquantel (in combination with albendazole) in the treatment of parenchymal neurocysticercosis.

Dosage (Posology) and method of administration

Oral

Trichuris trichiura

Adult: 10-20 mg/kg as single dose; with pyrantel: 10-20 mg/kg as single dose

Child: 10-20 mg/kg as single dose; with pyrantel: 10-20 mg/kg as single dose

Oral

Enterobiasis; Hookworm infections; Trichostrongylus orientalis

Adult: With pyrantel: 10-20 mg/kg as single dose

Child: With pyrantel; 10-20 mg/kg as single dose

The dosage recommended for the treatment of schistosomiasis is: 20 mg/kg bodyweight three times a day as a one day treatment, at intervals of not less than 4 hours and not more than 6 hours. The recommended dose for clonorchiasis and opisthorchiasis is: 25 mg/kg bodyweight three times a day as a one day treatment, at intervals of not less than 4 hours and not more than 6 hours. The tablets should be washed down unchewed with water during meals. Keeping the tablets or segments thereof in the mouth can reveal a bitter taste which can promote gagging or vomiting.

How supplied

Praziquantel (praziquantel) is supplied as a 600 mg white to orange tinged, film-coated, oblong tablet with three scores. The tablet is coded with “BAYER” on one side and “LG” on the reverse side. When broken, each of the four segments contains 150 mg of active ingredient so that the dosage can be easily adjusted to the patient's bodyweight.

Segments are broken off by pressing the score (notch) with thumbnails. If ¼ of a tablet is required, this is best achieved by breaking the segment from the outer end.

Praziquantel (praziquantel) is available in bottles of 6 tablets.

Strength NDC
Bottles of 6 600 mg 0085-1747-01

Store below 86°F (30°C).

Manufactured by: Bayer HealthCare Pharmaceuticals Inc. Wayne, NJ 07470. Made in Germany. Distributed and Marketed by: Schering Corporation, a subsidiary of Whitehouse Station, NJ 08889, USA. Revised: 08/10.

Usual Adult Dose for Enterobiasis

11 mg/kg base (maximum 1 g) orally once. Repeat dose in 2 weeks.

Usual Adult Dose for Pinworm Infection (Enterobius vermicularis)

11 mg/kg base (maximum 1 g) orally once. Repeat dose in 2 weeks.

Usual Adult Dose for Hookworm Infection (Necator or Ancylostoma)

11 mg/kg base (maximum 1 g) orally daily for 3 days.

Usual Adult Dose for Ascariasis

11 mg/kg base (maximum 1 g) orally once.

Usual Adult Dose for Trichostrongylosis

11 mg/kg base (maximum 1 g) orally once.

Usual Adult Dose for Moniliformis Infection

11 mg/kg base (maximum 1 g) orally once. Repeat dose twice at 2 weeks intervals.

Usual Pediatric Dose for Enterobiasis

>=2 years: 11 mg/kg base (maximum 1 g) once. Repeat dose in 2 weeks.

Usual Pediatric Dose for Pinworm Infection (Enterobius vermicularis)

>=2 years: 11 mg/kg base (maximum 1 g) once. Repeat dose in 2 weeks.

Usual Pediatric Dose for Hookworm Infection (Necator or Ancylostoma)

>=2 years: 11 mg/kg base (maximum 1 g) orally daily for 3 days.

Usual Pediatric Dose for Ascariasis

>=2 years: 11 mg/kg base (maximum 1 g) orally once.

Usual Pediatric Dose for Trichostrongylosis

>=2 years: 11 mg/kg base (maximum 1 g) orally once.

Usual Pediatric Dose for Moniliformis Infection

>=2 years: 11 mg/kg base (maximum 1 g) orally once. Repeat dose twice at 2 weeks intervals.

Renal Dose Adjustments

Data not available

Liver Dose Adjustments

Pyrantel is contraindicated in patients with hepatic disease.

Dose Adjustments

In the treatment of ascariasis, pyrantel may be used only if it has been determined that the worm load will not worsen obstruction.

Precautions

Pyrantel is contraindicated in patients with hepatic disease.

When one individual in a household has pinworms, the entire household should be treated unless otherwise advised. Pinworm infections are easily transmitted to others in the same household.

Pyrantel should be used with caution in patients with severe malnutrition or anemia. Supportive therapy is recommended for anemic, dehydrated, or malnourished patients prior to administration of the drug.

Other medications are known to antagonize the anthelmintic effect of pyrantel. Patients should be advised to consult with their physician before initiating any drug therapy while receiving pyrantel.

Dialysis

Data not available

Other Comments

The dose should be taken as a single oral dose. It may be taken alone or with milk or fruit juice.

Pyrantel pamoate 2.9 g is approximately equivalent to 1 g of pyrantel (base).

Interaction with other medicinal products and other forms of interaction

See also:
What other drugs will affect Praziquantel?

Concomitant administration of rifampin, a strong P450 inducer, with praziquantel is contraindicated and must be avoided. In a crossover study with a 2-week washout period, 10 healthy subjects ingested a single 40 mg/kg dose of praziquantel following pre-treatment with oral rifampin (600 mg daily for 5 days). Plasma praziquantel concentrations were undetectable in 7 out of 10 subjects. When a single 40 mg/kg dose of praziquantel was administered to these healthy subjects two weeks after discontinuation of rifampin, the mean praziquantel AUC and Cmax were 23% and 35% lower, respectively, than when praziquantel was given alone. In patients receiving rifampin, for example, as part of a combination regimen for the treatment of tuberculosis, alternative agents for schistosomiasis should be considered. However, if treatment with praziquantel is necessary, treatment with rifampin should be discontinued 4 weeks before administration of praziquantel. Treatment with rifampin can then be restarted one day after completion of praziquantel treatment.

Concomitant administration of other drugs that increase the activity of drug metabolizing liver enzymes (P450 inducers), for example, antiepileptic drugs (phenytoin, phenobarbital and carbamazepine), and dexamethasone, may also reduce plasma levels of praziquantel. Concomitant administration of drugs that decrease the activity of drug metabolizing liver enzymes (P 450 inhibitors), for example, cimetidine, ketoconazole, itraconazole, erythromycin may increase plasma levels of praziquantel.

Chloroquine, when taken simultaneously, may lead to lower concentrations of praziquantel in blood. The mechanism of this drug-drug interaction is unclear.

Grapefruit juice was reported to produce a 1.6-fold increase in the Cmax and a 1.9-fold increase in the AUC of praziquantel. However, the effect of this exposure increase on the therapeutic effect and safety of praziquantel has not been systematically evaluated.

See also:
What other drugs will affect Pyrantel?

• Dexamethasone

Steady-state trough concentrations of albendazole sulfoxide were about 56% higher when 8 mg dexamethasone was coadministered with each dose of albendazole (15 mg/kg/day) in 8 neurocysticercosis patients.

• Pyrantel

• Cimetidine

Albendazole sulfoxide concentrations in bile and cystic fluid were increased (about 2-fold) in hydatid cyst patients treated with cimetidine (10 mg/kg/day) (n = 7) compared with albendazole (20 mg/kg/day) alone (n = 12). Albendazole sulfoxide plasma concentrations were unchanged 4 hours after dosing.

• Theophylline

The pharmacokinetics of theophylline (aminophylline 5.8 mg/kg infused over 20 minutes) were unchanged following a single oral dose of albendazole (400 mg) in 6 healthy subjects.