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compositionComposition:PRAZIQUANTEL-500MG
prescription
Prescription Medicine
info
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Cysticide 500mg Tablet is used to treat parasitic infections such as Schistosoma and liver fluke. It contains Praziquantel which works by paralysing the worms. This causes the worms to release their hold on the blood vessels so they can be removed from the body. In some cases, this medicine may cause side effects such as headache, dizziness, abdominal discomfort, nausea, and fever.

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Written By Santoshini Reddy G , M Pharmacy
Reviewed By Dr Aneela Siddabathuni , MPharma., PhD
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More about the Product

Composition :

PRAZIQUANTEL-500MG

Manufacturer/Marketer :

Merck Ltd

Consume Type :

Oral

Expires on or after :

Dec-28

Return Policy :

Not Returnable

About Cysticide 500mg Tablet

Cysticide 500mg Tablet is a prescription medicine used to treat infections caused by parasitic worms, such as blood flukes and liver flukes. It works by targeting the parasites directly inside the body to clear the infection and prevent further complications. This medication is essential for stopping the spread of these parasites within your organs.

Unlike long-term therapies, this medicine is typically taken as a short-term treatment, often for just one day. You should take the tablets with water during a meal, and you must swallow them whole without chewing. To support your recovery and prevent getting infected again, it is important to practice strict personal hygiene and avoid consuming untreated water or undercooked freshwater fish.

While taking Cysticide 500mg Tablet, you may experience mild side effects like a temporary headache, dizziness, or stomach discomfort. Most of these symptoms go away quickly on their own once the treatment is finished. However, if you experience more serious symptoms such as severe skin rashes, seizures, or an irregular heartbeat, you must contact your doctor immediately.

Before you begin taking this medicine, tell your doctor if you have a history of seizures, heart problems, or kidney disease. Do not take this if you have a parasitic infection in your eyes, known as ocular cysticercosis, as treating this area can cause severe damage to your vision. Your doctor will help determine if this treatment is safe for you.

This medicine can interact with other substances, including alcohol, which can make dizziness and drowsiness much worse. It may also interact with certain seizure medications and antibiotics, making the treatment less effective. If you are pregnant, breastfeeding, or managing health conditions as an older adult, talk to your doctor or pharmacist before starting treatment.

Uses of Cysticide 500mg Tablet

Cysticide 500mg Tablet used in the treatment of parasitic infections. The detailed uses of Cysticide 500mg Tablet are as follows:

  • Schistosomiasis: Cysticide 500mg Tablet helps clear infections caused by blood flukes, which are parasitic flatworms that enter the body through contact with contaminated freshwater.
  • Liver fluke infections: This medicine targets and eliminates parasites that infect the liver and bile ducts, which typically occur after eating raw or undercooked freshwater fish.
  • Lung fluke infections: Cysticide 500mg Tablet is used to treat parasitic infections in the lungs, usually contracted from eating raw or undercooked crabs or crayfish.

Key Benefits

Cysticide 500mg Tablet helps treat parasitic worm infections by killing the parasites responsible for the disease, helping your body recover and reducing the risk of long-term complications.

Benefits may include:

  • Helps clear parasitic worm infections, often with a single treatment as prescribed.
  • Relieves symptoms such as abdominal pain, fever, fatigue, and blood in the urine or stool as the infection resolves.
  • Helps prevent further tissue damage and reduces the risk of long-term complications, such as organ damage and scarring, through early treatment.
  • Supports recovery by eliminating the parasites, allowing you to regain strength and return to your daily activities.
  • May help reduce the risk of nutritional deficiencies associated with chronic parasitic infections.

Directions for Use

  • Cysticide 500mg Tablet can be taken with meals to enhance absorption and maximize its effectiveness.
  • Follow your doctor's instructions on the dosage and timing of this medication to ensure safe and effective use.
  • Swallow Cysticide 500mg Tablet as a whole with a glass of water.
  • Do not chew, crush, or break it.

How Cysticide 500mg Tablet Works

Cysticide 500mg Tablet works by disrupting the physical structure of the parasites. Once you take the medicine, it rapidly increases the flow of calcium into the parasite's outer layer. This sudden shift causes the worm’s muscles to contract severely and paralyse them almost instantly. Once the parasites are paralysed, they can no longer cling to the walls of your blood vessels or organs. They detach from the host tissues, allowing your body's natural immune system to target, destroy, and safely flush them out of your body.
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Alcohol

Caution

Avoid alcohol consumption as it might cause increased dizziness.

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Pregnancy

Caution

Cysticide 500mg Tablet belongs to pregnancy category B. Please consult your doctor if you have any concerns regarding this; your doctor will prescribe only if clearly needed.

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Breast Feeding

Unsafe

Cysticide 500mg Tablet may pass into breastmilk. Avoid breastfeeding whilst taking Cysticide 500mg Tablet and during the subsequent 72 hours/3 days.

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Driving

Unsafe

Cysticide 500mg Tablet may cause dizziness. Avoid driving or operating machinery on the day of treatment and the following day.

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Liver

Caution

Please consult your doctor if you have any concerns regarding the usage of Cysticide 500mg Tablet in patients with liver impairment. Cysticide 500mg Tablet should be used with caution in patients with moderate to severe liver impairment.

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Kidney

Caution

Please consult your doctor if you have any concerns regarding the usage of Cysticide 500mg Tablet in patients with kidney impairment.

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Children

Caution

Safety of Cysticide 500mg Tablet in children below 4years has not been established.

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Heart

Caution

Cysticide 500mg Tablet should be taken with caution in patients with heart problems. Therefore, please inform your doctor before using Cysticide 500mg Tablet.

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Geriatrics

Caution

Cysticide 500mg Tablet should be given with caution in elderly patients due to an increased risk of side effects. Talk to your doctor if you have any concerns.

What if I have taken an overdose of Cysticide 500mg Tablet

If you suspect an overdose or if someone has accidentally swallowed too many tablets, seek immediate medical attention or contact a poison control centre right away.

Diet & Lifestyle Advise

  • Support kidney function: Drink plenty of safe, clean water throughout the day to help support your kidneys as they process the medicine and flush out waste.
  • Avoid high-risk foods: Avoid eating raw, undercooked, or salted freshwater fish, crabs, and crayfish, as these are primary sources of parasitic fluke infections.
  • Prevent re-exposure: Avoid swimming, wading, or bathing in freshwater lakes, rivers, or streams in areas where parasite infections are common. Use chlorinated pools or safe municipal water instead.
  • Maintain good hygiene: Practice thorough hand hygiene by washing your hands with soap and clean water before preparing food, eating, and after using the restroom to prevent reinfection.
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How Soon It Starts Working

The time required for Cysticide 500mg Tablet to start to work: The time required for Cysticide 500mg Tablet to show its action is unknown. The time for which the effects of Cysticide 500mg Tablet last: Cysticide 500mg Tablet effect lasts for 6 hours.

What if you forget to take Cysticide 500mg Tablet

Since this medication is usually taken as a single-day treatment, take the missed dose as soon as you remember. If it is already time for your next scheduled dose on that day, skip the missed one and continue with your regular schedule. Do not take a double dose to make up for a missed one. Talk to your doctor or pharmacist if you are unsure what to do.

Storage

• Store Cysticide 500mg Tablet tablets at room temperature, ideally between 20°C and 25°C (68°F to 77°F).

Drug Warnings

  • Avoid hazardous activities: Do not drive, operate machinery, or perform tasks that require complete alertness on the day you take this medicine and the day after, as it can cause significant drowsiness and slower reflexes.
  • Avoid grapefruit products: Avoid eating grapefruit or drinking grapefruit juice while taking this medicine, as it can raise the levels of the drug in your body and increase the risk of side effects.
  • Discuss seizure history: If you have a history of seizures or epilepsy, notify your doctor before starting treatment, as they may need to monitor you closely.
  • Share your travel history: Always tell your doctor about any recent international travel, especially to tropical areas where other parasitic diseases are common, to ensure this treatment is safe for you.

verifiedApollotooltip
  • Antibiotic (e.g., rifampin): May significantly lower the levels of Cysticide 500mg Tablet in your body, making it less effective.
  • Seizure medicines (e.g., phenytoin, carbamazepine, phenobarbital): May speed up how your body processes Cysticide 500mg Tablet, reducing its ability to clear the parasites.
  • Stomach acid reducer (e.g., cimetidine): May increase the concentration of Cysticide 500mg Tablet in your blood, which may raise your risk of side effects.
  • Corticosteroid (e.g., dexamethasone): May lower the levels of Cysticide 500mg Tablet in your body, potentially decreasing its effectiveness against the infection.

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verifiedApollotooltip
  • Grapefruit juice: Consuming grapefruit or its juice can interfere with how your body breaks down this medicine, leading to higher drug levels in your blood and increased side effects like extreme dizziness.

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Habit Forming

No

Therapeutic Class

[ANTIHELMINTICS]

FAQs

Cysticide 500mg Tablet is used to treat parasitic infections, including Schistosomiasis and liver fluke infection.
Cysticide 500mg Tablet kills the parasites by paralysing the worms. This causes the worms to release their hold on the blood vessels so that they can be removed from the body. Thereby, Cysticide 500mg Tablet helps treat schistosomiasis and liver fluke infections.
To treat your infection effectually, continue taking Cysticide 500mg Tablet for as long as it has been prescribed by the doctor. Do not be reluctant to speak with the doctor if you experience any difficulty while taking Cysticide 500mg Tablet.
Concomitant administration of Cysticide 500mg Tablet with rifampin is not recommended as therapeutically effective blood levels of Cysticide 500mg Tablet may not be achieved when taken together. Consult your doctor if you are taking rifampin; your doctor may prescribe alternate medicine. However, if treatment with Cysticide 500mg Tablet is necessary, rifampin should be discontinued 4 weeks before starting Cysticide 500mg Tablet. Rifampin can be restarted one day after the completion of treatment with Cysticide 500mg Tablet.
Cysticide 500mg Tablet is unlikely to cause diarrhoea. Eat non-spicy food and drink plenty of fluids if you experience diarrhoea. If you notice bloody diarrhoea, consult your doctor immediately.
Avoid taking Cysticide 500mg Tablet if you have parasitic eye infections, as killing the parasite might cause blindness. Talk to your doctor if you have any concerns regarding this.
Yes. Cysticide 500mg Tablet is effective treatment for Schistosomiasis infections (Infection with the type of worm that lives in the bloodstream) and Liver fluke infections (Infection with a type of worm that lives in or nearer the liver), when it is taken as directed by the physician.
Yes. Cysticide 500mg Tablet may cause dizziness in some cases. Do not drive a vehicle or do anything that requires mental focus until you feel normal.
Do not take Cysticide 500mg Tablet if you are allergic to any of its ingredients, have a parasitic eye infection, or are pregnant. Additionally, breastfeeding should be avoided while taking Cysticide 500mg Tablet and for 3 days after finishing the medication. It's also important to note that Cysticide 500mg Tablet has not been proven safe for children under 4 years old, so be sure to consult a doctor before giving it to your child.
Store Cysticide 500mg Tablet in its original container, tightly closed. Follow the storage instructions on the label. Dispose of any unused medicine safely. Keep out of reach of children, pets, and others to avoid accidental consumption.
Take the missed dose as soon as you remember, unless it's almost time for your next dose. In this case, skip the missed dose and take your next dose at the regular time. Never take a double dose to make up for a missed one.
Cysticide 500mg Tablet is safe when used correctly, but like all medicines, it can have some side effects. To ensure safe use, it's important to talk to a healthcare professional before taking it. They will provide guidance and instructions on how to use Cysticide 500mg Tablet effectively. By following their advice, you can minimize the risk of side effects and use the medication safely.
The common side effects of Cysticide 500mg Tablet may include headache, dizziness, abdominal discomfort, nausea, and fever. Most of these side effects do not require medical attention and will resolve gradually over time. However, you are advised to talk to your doctor if you experience these side effects persistently.
It is highly recommended to take Cysticide 500mg Tablet with a meal and a full glass of water. Taking this medicine with food helps your body absorb it more effectively and helps prevent an upset stomach. Talk to your doctor or pharmacist if you have concerns about taking your dose.
The active components in Cysticide 500mg Tablet have a naturally bitter taste. To prevent this bitterness from causing nausea, gagging, or vomiting, you should swallow the tablets whole with water and avoid chewing or crushing them. Talk to your doctor or pharmacist if you find it difficult to swallow tablets.
Cysticide 500mg Tablet starts working quickly, paralyzing the parasites within hours of your first dose. Most people only need to take the medicine for a single day to successfully clear the infection. Talk to your doctor or pharmacist about your specific recovery expectations.
You should avoid drinking alcohol on the day you take Cysticide 500mg Tablet and for at least 48 hours after your treatment ends. Alcohol can worsen common side effects like dizziness, drowsiness, and headaches. Talk to your doctor or pharmacist for more safety advice.
If you are pregnant or planning to become pregnant, you should discuss the benefits and potential risks with your doctor before starting treatment. Your doctor will evaluate your condition and determine if this is the safest option for you. Talk to your doctor or pharmacist for personalized guidance.
This medicine can pass into breast milk. It is generally advised to stop breastfeeding on the day you take Cysticide 500mg Tablet and for 72 hours after your final dose to prevent your baby from absorbing the medication. Talk to your doctor or pharmacist for advice on how to safely feed your baby during this time.
No, Cysticide 500mg Tablet is specifically designed to treat infections caused by flukes and schistosoma parasites. It does not work against other common worms like pinworms, hookworms, or roundworms. Talk to your doctor or pharmacist to make sure you are using the correct medicine for your diagnosis.
If you vomit within one to two hours of taking your dose, the medicine may not have been fully absorbed into your system. Do not take an extra tablet on your own. Talk to your doctor or pharmacist immediately to find out if you need to repeat the dose.

Disclaimer

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Reference

  1. U.S. Food and Drug Administration (FDA). 018714S012Lbl [FDA Prescribing Information]. Silver Spring, MD: FDA; 2024. [Accessed on 02 Jun. 2026]Check here
  2. Drugs.com Clinical Review Team. Praziquantel Pregnancy and Lactation Reference Monograph. Auckland, NZ: Drugs.com; 2026. [Accessed on 02 Jun. 2026]Check here
  3. DailyMed Database. Druginfo.Cfm Clinical Monograph. Bethesda, MD: National Library of Medicine; 2025. [Accessed on 02 Jun. 2026]Check here
  4. MedlinePlus. A608048 Patient Information Monograph. Bethesda, MD: U.S. National Library of Medicine (NLM); 2025. [Accessed on 02 Jun. 2026]Check here
  5. Praziquantel Praziquantel. 2014. [Accessed on 31 Mar. 2019]Check here
  6. Praziquantel. NIH National Library of Medicine. National Center for Biotechnology Information. August 2022. [Accessed on 6th August 2022]Check here
  7. Macleods Pharmaceuticals Limited. Praziquantel. [Revised in April 2020] [Accessed on 6th August 2022] 0.pdfCheck here

Country of origin

India
Other Info - CY80261
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