Thanks for contacting Ayurveda with your health concern and following are the clarificaitons.
1. since age is one and half years thus supplementation is needed but also make sure at she is getting adequate mother's milk (if breast feeding) which will provide natural immunity to her.
2. You can consult for "Suvarnprashan" which is a mixture of Gold,Cow’s ghee and honey and acts to stimulate body immune cells and thus protect child from different harmful organisms for a long duration.
3. ragi, rice Kanji, porridges made of wheat, oats are good at her age and Pediasure and other tinned food tinned foods although help in increasing the weight but cause fat deposits in children,as a result they may suffer from burps, gastic problems so avoid them at this tender age.
4. make sure you are not giving the above said supplements as priority basis or as quantity specified on the box, just introduce them for taste and low in quantity
PS. since pedia sure contains too many arificial chemicals in it, do not start it at this age, you can go with 'junior' horlicks.
Hope I have given due consideration in taking up your case, any suggestions are welcome
Dr. Munish Sood
Consultant & Physicain