Huena Tablet is an antiseptic medicine used to prevent urinary tract infections. It works by turning into formaldehyde in acidic urine, which helps kill infection-causing bacteria and keeps the urinary tract free from harmful microbes. Huena Tablet should be taken exactly as prescribed, typically twice daily with or after meals and at bedtime to reduce stomach upset. For optimal results, maintain an acidic urinary environment, as the drug relies on acidic urine (pH ≤ 5.5) to convert into its active antibacterial form, formaldehyde. Avoid alkalinizing agents (like certain antacids), and complete the full course to prevent reinfection or resistance. Regular follow-up with your doctor is advised to monitor treatment response.Common side effects of Huena Tablet include nausea, upset stomach, and rash. If side effects persist or worsen, consult your doctor. Always use as directed to minimize risks and ensure safe use.Huena Tablet should not be used in individuals with severely impaired kidney function, severe liver disease, or dehydration, as it may increase the risk of crystal formation and urinary tract irritation. It is also contraindicated in patients with indwelling catheters or those with consistently alkaline urine, as this reduces its effectiveness. Caution is advised in patients with a history of kidney stones or gastrointestinal issues. Always inform your doctor of any existing health conditions or medications, especially sulfonamides, as combining them can increase the risk of side effects.