As yourPTA results you have Bilateral SNHL. According to age and amount of loss gain is not possible but you can stop proceeding of disease with some medicines.

Hearing difficulties may stem from auditory nerve or ear health concerns. Ayurveda offers supportive remedies: Remedies: Medicated Ear Drops: Use Bilva Taila or Kshar Taila, 2-3 drops in the ear daily. Oral Medicines: Brahmi Vati: 1 tablet twice daily. Ashwagandha Churna: 1 tsp with warm milk at bedtime. Vacha Powder: 250 mg with honey daily. Nasya Therapy: Apply 2 drops of Anu Taila in each nostril daily. Tips: Include antioxidant-rich and omega-3 foods. Avoid cold, oily, or stale food. Practice Bhramari Pranayama to soothe nerves. For severe issues, consult an ENT specialist alongside Ayurvedic care.

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This is a geriatric problem and won't be cured permanently. You can start using anu taila

Take eargrit vati / before meal Chndraprbha vati Sarivadi vati.1-1 tab bd After meal