Levamisole Tablet: Benefits, Dosage and Side Effects

Levamisole is an antihelminthic drug that has been commonly used for the treatment of parasitic, viral, and bacterial infections. It was produced by Janssen and was first used as a worm infestation agent in 1969. In 1990, Levamisole was approved by the FDA as an adjuvant treatment for colon cancer. Previously, levamisole was used as an antirheumatic therapy in the 1970s and 1980s in patients with rheumatoid arthritis.

Due to its immunomodulatory effects, this drug has been studied in the treatment of various immune-mediated diseases, with some studies showing positive results. This drug was also used in combination with other drugs for the treatment of various cancers.

Levamisole Tablet Uses

• Treatment of Worm Infections: Levamisole is primarily used to treat infections caused by worms.
• Veterinary Drug: It is widely used in veterinary medicine to treat worm infestations in livestock.
• Experimental Uses: Historically and experimentally, levamisole has been explored for treating autoimmune disorders and cancers in humans.
• Adulterant in Cocaine: Recently, levamisole has been found as an adulterant in cocaine.

Conditions Levamisole is Used to Treat

• Ascariasis (roundworm infection)
• Colon cancer (as part of chemotherapy regimen)
• Occasionally used in:
  • Rheumatoid arthritis
  • Nephrotic syndrome in children
  • Skin conditions like vitiligo (off-label)

Secondary Uses of Levamisole

• Immune booster in chemotherapy
• Experimental uses in autoimmune conditions

How Does Levamisole Work?

Anti-Parasitic Action: Levamisole works as an anti-parasitic by inhibiting enzyme activity in the worm's muscles. This action leads to paralysis and eventual death of the parasite, thereby treating the infection.

In simple terms: It helps the body fight parasites and can also boost the immune system when needed.

How to Use Levamisole

• Take levamisole exactly as prescribed by your doctor. Do not adjust the dosage without consulting your doctor.
• Follow the dosing schedule recommended by your doctor. Taking it too frequently or in higher doses than prescribed can lead to side effects.
• If you vomit'shortly after taking levamisole, consult your doctor. They will advise whether to take another dose or wait for the next scheduled dose.

Dosage

• For worm infections: A single dose of 150 mg (adults) or 2.5 mg/kg (children)
• For colon cancer (adjunct): Usually given on specific days post-chemotherapy cycles
• Immune modulation: Intermittent dosing (often 2-3 times per week)
• Follow your doctor's instructions or label directions precisely.
• Dosage varies based on the condition being treated.
• Do not adjust dosage without consulting your doctor.

Always follow the exact dosing instructions provided by a healthcare provider.

What Should I Do if I Miss a Dose?

• Take the missed dose as soon as you remember
• Skip it if it's almost time for the next one
• Do not double the dose

What Happens If an Overdose?

Symptoms of overdose:

• Nausea, vomiting
• Dizziness
• Confusion or seizures
• Blood cell abnormalities

Contact your doctor immediately if you suspect an overdose, it can be serious.

Levamisole Side Effects

• Diarrhea
• Nausea
• Anxiety or nervousness
• Dizziness
• Headache
• Mental depression
• Nightmares
• Pain in joints or muscles
• Skin rash or itching
• Trouble sleeping
• Unusual tiredness or sleepiness
• Vomiting
• Blurred vision
• Confusion
• Convulsions (seizures)
• Lip-smacking
• Numbness, tingling, or pain in the face, hands or feet
• Paranoia (feelings of persecution)
• Puffing of cheeks
• Rapid or worm-like movements of the tongue
• Trembling or shaking
• Trouble walking
• Uncontrolled movements of arms and legs

Serious but Rare Side Effects

• Agranulocytosis (dangerously low white blood cells)
• Skin rashes or ulcers
• Seizures or confusion
• Flu-like symptoms

Regular blood monitoring may be needed for long-term use. Inform a doctor if any unusual symptoms occur.

Precautions and Warnings of Levamisole

• When considering using Levamisole, discuss the risks and benefits with your doctor.
• Inform your doctor about any allergic reactions to Levamisole or other medications.
• Studies have primarily involved adults; safety and effectiveness in children are not well-established.
• Although not extensively studied in older adults, Levamisole is generally considered safe.
• The risk to infants is unknown; weigh benefits against potential risks.

Conditions Where Caution Is Needed

• Liver or kidney impairment
• People with autoimmune conditions
• Concurrent use with immunosuppressants

Are There Any Age Restrictions for Using Levamisole?

• Safe in children for treating worms (weight-based dose)
• Use in children for immune disorders should be carefully monitored

Alcohol or Food Interactions

Alcohol:

• No major interactions, but better avoided during treatment

Food:

• Can be taken with or without food
• Food may help reduce nausea

Possible Interactions with Other Medications

May Interact With:

• Immunosuppressants - may affect immune balance
• Clozapine or other bone marrow suppressants - increased risk of blood problems
• 5-FU (fluorouracil) - used together in colon cancer treatment

Supplements and Herbal Products:

• Avoid immune-boosting herbs without consulting your doctor
• Inform your doctor of all supplements and over-the-counter medications

Important Information

• Regular monitoring by your doctor is crucial to ensure Levamisole's effectiveness and detect any adverse effects.
• Used to treat various parasitic worm infections, Levamisole should be taken with food.
• Swallow tablets whole with a full glass of water; do not crush or chew.
• To Avoid pregnancy, use effective birth control while taking Levamisole.
• Blood counts and liver function may be monitored regularly during treatment.
• Avoid contact with sick individuals and inform your doctor of any signs of infection.
• Complete the prescribed course; do not skip doses even if symptoms improve.

How Should Levamisole Be Stored?

• Store in a tightly closed container at room temperature.
• Protect from light, moisture, and direct sunlight.
• Keep out of reach of children.
• Dispose of outdated or unused medications properly.

What Happens If Levamisole Is Not Stored Properly?

• May lose potency
• Can become unstable if exposed to heat or moisture

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