The students, aged 10-12 years, of two Sarvodaya schools in West Delhi's Bharat Nagar and Ashok Vihar area took ill on Wednesday after consuming the supplements.
"The students were rushed to the Sundar Lal Jain hospital after they complained of pain in abdomen and started vomiting. They were discharged from the hospital Thursday morning. The students said that they got ill after consuming iron tablets provided by the school," a police officer said.
A case has been registered and investigation is on, the officer added.
The scheme to provide iron and folic acid tablets to students was kicked off on Wednesday to improve their health.
Under the programme, all adolescent students from 6th to 12th standard in government and government-aided schools will be given iron and folic acid tablets once a week.
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