Thrombosis and brain stroke. 500!

Respected sir my brother who is of 46 years of age  got brain stroke on 1st of march 2021. After doing ct scan and MRI, the report shows Thrombosis and the left veins of neck bocked that supply blood to the brain and there is spots of blood in brain We admitted him in Harsh Hospital in Allahabad where he got treatment for 16days and after taking discharge from hospital his all injection medicines got converted into tablets. After discharge he got improving day by day but sir from 10 of april he is again getting problem of dizziness, especially when he generally comes from wash room. He is getting dizziness once or twice a day So respected sir kindly suggest me what to do to get rid of from problem of dizziness His is taking medicine named as Valprid CR 500mg Dizitac Cognitop Avas 20 Becosules Preva as 150 Onevert 24 Dalacin 300 Pantocar 40 Levipil 500