How Can Arms, Legs And Trunk Tingling Sensations Be Treated?

Hi, may I answer your health queries right now ? Please type your query here... Am 64 yrs age male. Am having this tingling sensations of the arms and legs. At times even the trunk. Have been advised to take Evion LC for 3 weeks but past 2 days its still coming on. Mainly when I lie down. Will Vit B12 help? If so, what dosage and for how long? Thanks