Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Contact a poison centre or emergency medical service immediately after any suspected sulindac overdose.
Do this even if there are no symptoms.
In the United States, Poison Control can be reached at 1-800-222-1222 .
Elsewhere, use the local poison information service or emergency number.
Call emergency services now if the person:
If they are not breathing normally, begin emergency response measures as directed by the emergency dispatcher.
If there is an immediate risk of further self-harm, call emergency services and stay with the person when it is safe.
Routine follow-up is different from emergency care.
And for anyone, someone who:
An intentional overdose always needs urgent medical care, regardless of the reported amount.
Follow-up may include repeat kidney tests, blood counts, medication review, or mental health support after the immediate poisoning has been treated.
And for anyone, someone who:
The article also says
Place an unconscious but breathing person on their side if it is safe to do so.
Do not leave them alone.
Every sign above is quoted from the sofidex article on Sulindac overdose. If you are not sure, err upward — it is always reasonable to be checked.