Bandy-Plus chewable tablet is a prescription antiparasitic medicine containing albendazole 400 mg + ivermectin 6 mg per tablet used to treat intestinal worm infections and certain parasitic infestations. 
For a once-yearly deworming or general preventive dose, the usual practice in many paediatric and adult indications is:
Next Steps
✔ Confirm whether this medicine is actually needed for preventive deworming in your or your child’s situation.
✔ Consult your doctor or paediatrician to determine the right dose based on body weight, especially for children — because dosing for children is often weight-based, not age alone. 
✔ Take the tablet exactly as prescribed: chew completely before swallowing and follow food-taking instructions if advised (some doctors recommend on an empty stomach). 
Do NOT take multiple doses or repeat doses without medical oversight — misuse can increase side effects.
Health Tips
✔ Record any symptoms of worms (itching, abdominal pain, weight loss) before starting.
✔ Maintain good hygiene and hand-washing to prevent re-infection.
✔ Use clean water and properly washed food to avoid parasitic exposure.
✔ If given for preventive use, one tablet is usually sufficient, but follow the exact plan your doctor recommends. 
Since correct dosing depends on age, weight, and infection risk, I strongly recommend booking an online consultation so i can tailor the appropriate dose and schedule for your needs before you start Bandy-Plus.