Hello. Thanks for your query at Doctorspring.com
Iron overdose will start causing toxicity when iron reaches a level of 10-15 mg/ kg body weight. Since he ingested around 30 tablets, there is a cause to worry. I will advise you to convince him immediately and take him to the ER, where they can give him Deferoxamine, which is iron antidote. He can be asymptomatic too, depends entirely on how much iron his body is metabolising. He can have symptoms such as Nausea, severe vomiting, even diarrhea, gastritis, ulceration, metabolic acidosis, e.t.c
Please get him examined as soon as possible,
Hoping for the best.
Feel free to discuss further,
Regards

Hello. Thank you for writing to us again.
Metablic acidosis if i mentioned before can be very serious. The good thing however is, he has not shown any of the symptoms i mentioned above. ( I am assuming that since your query was posted around 9 hours ago ). If he's still feeling fine, then we can be relieved. However, it is better to get him examined, since they can detect the level of iron in his syrum and give treatment accordingly.
I am glad that you are there, and you will help him recover from this.
Feel free to discuss further,
Regards

Hello. Thanks for writing to us again.
If he has really taken 70 tablets, then i recommend you go to the doctor immediately. It is a serious issue, because iron can cause problems like perforation, ulceration, acidosis, damage to liver and brain, can even lead to death from acute liver failure or shock.
I do not know under what circumstances he took the medicine, but please take him to the doctor immediately. Make sure he doesn't consume any more. It can be fatal.