Thank you everyone, so many wonderful ideas. I knew there would be alternatives I could try!! Medication is going to be the last resort for us.
I am going to look into Boots to see if they sell Epsom Salts, we live in the U.A.E, so things are not that readily available here. Chundle, I also want to check the natural remedies you suggested.
Indigobell, DS has never been assessed for ADD, he was diagnosed with autism at 2.5, probably why all his hyperactivity was put down to his autism. I know somebody who is a professional foot reflexologist, not sure if DS would allow her to touch his feet though.
Oddgirl, if I can't buy epsom Salt here, I will definitely look into making it, but I am such a terrible cook that it is a case of whether I dare or not.
Bochead, we are also considering soundlearning centre for DS's auditory processing problem. As it will involve us being in the Uk for couple of months (am I right?), it just is difficult to organise considering school, dh's work. Please let me know how you get on as we also think DS has a lot of sensory seeking behaviour which is making him more hyper.
DS's diet is pretty good, he eats a lot of vegs, fish and chicken (he does not like red meat much). Interesting comment about omega-3, he definitely gets a lot of omega-3 from his diet as he loves salmon and seabass. I wondered why eye-q chews never delivered the wonder they promised!!
DS is also very physically active, he does a lot of activities throughout the week, biking, swimming, judo etc. We also have a trampoline although he does not go onto it that often, I will make sure he gets on it everyday from now on.
DS is much better at sleeping through the night now. It's funny but everytime DS had a sleepless night, his concentration level went up according to his teacher. She even made this comment jokingly that we should wake him up at night since he is more tuned in when he is tired!!!
We are yet to have one of this visit to dentists and doctors, may be it is time to have a blood test, since we don't know if he is lacking anything.
I can't thank everyone enough for the wonderful ideas again. I want to try everything in the world first before I medicate DS.