Hyperactivity. The problem i expained?

My 2 years old kid is hyperactive. He keeps on doing some activity one after another & doesn't stay calm for a min. Hasn't started speaking yet but understands what we say. Even he is able to explain with physical gestures about what he need. Hardly spends 5-10 mins with mobile. When we take him outdoor, he keeps on running here and there. If we try to grab him in arms, he tries to get down immediately & doesn't stay there for a min. Evn keeps on moving continously when we are on 2 wheeler. Evn at home, doesn't sit idle for a min. Consulted Pediatrician, he suspects autism & gave braincost syrup, multi-vit & dalmia attenio syrup.  I hv 2 ques- 1. Are there any side effects of giving brainbooster to 2 years old? Is it really needed given the problem I expained? 2. Please provide your opinion on the problem I explained above. Wat cud be d cause of this and how can we remediate this. I am really worried about my child. Reposting this as I didn't get appropriate response to prev ques.