The symptoms of tingling is usually attributed to dysfunctional nerve conduction, which can be due to dietary deficiency of Vit B12.
Methylcobal being a preparation of Vit B12 is helpful in this regard.
Other causes for your symptoms like imbalance & heaviness can be:
1. Any fluctuation in the blood pressure & blood sugar levels.
2. Any pathology in the Vestibular system
in the inner ear, which helps in maintaining posture & balance.
3. Anemia- due to deficiency of Iron, Folic acid
, etc. which interferes with blood formation.
4. Hormonal & metabolic causes.
5. Stress, inadequate sleep, etc.
So, investigations like complete blood count
, estimation of blood pressure & blood sugar levels will be helpful to rule out any pathological cause for the symptoms.
Regarding the problems of Barrets esophagus
, the medicines given by your Doctor are correct.
Kindly continue them as advised.
Also, take care of your diet & exercise regularly.
Wishing you a Good Health.