My son is 7 years old. From last one year onward he is regularly suffering with intestinal worms. Even after taking deworm syrup .he is not eating well, her stool are pale yellow with mucus, even he does not pass stools regularly. He is looking very lean and week. He is not interested to eating food and doesn't pass stools even giving very good diet and also redness on tongue even after taking b complex syrup. That redness won't go. Please suggest medicine for his good appetite and immunity booster.