Hi welcome to HCm I have gone thru your query regarding vitamin D deficiency of your 14 years old daughter and her High BP and also over weight , which is indeed a matter of great concern . Dear, you have not mentioned , whether she had been prescribed to take Vit. D and Iron , supplements and a multivitamin or had been taking on your own ? In fact,faulty life style and food habits weaken our immune system . Gulping on medicines or supplement don t help unless we modify our life style and food habits . If the detox process is hindered, toxins will build up in your body eventually causing acidity and toxemia. These are the root causes of nearly all diseases , requires modification in our life style and food habits . Inclusion of balanced diet including all essential nutrients-- fiber fruit ,green veges , lemon juice with water and salt and pepper before meals , ginger ,garlic , Aloe vera 30 ml , Amla , coconut water , Turmeric powder a level spoon + almond oil a Tspoon with hot milk ,at bed time, with required work out ---- , regular exercise , yoga , pranayam - Deep Breathing Anulom vilom , Bhramari , Onkar Nad , Kapalbhati , all help weight loss & alley BP , problem . ---- Avoid processed foods carbs , sugar , fried ,fast foods , Tea , coffee ,alcohol and smoking , stress and Constipation all will produce biochemical and metabolic conditions in your body that will decrease your immunity, so avoiding is definitely the first step in the right direction to detoxing the body, boosting the immune system . All are the pillers of our strong immune system responsible for healthy disease free life . Vitamin D recmended dose is for Children 1 - 18 years: 600 IU Sun rays are a rich source of vitamin D . Always remember, In case of any problems , please see your doctor / professional Hope this helps solves your query .Take care .All the best .Get well soon Don t hesitate to come back in case of any further query .