Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
1
Is any of this happening now?
Call 911
Call emergency services now if the person:
Has trouble breathing, noisy breathing, or blue or grey lips
Collapses, has a seizure, or cannot be woken normally
Is choking or unable to swallow saliva
Has severe chest or abdominal pain
Vomits blood
Has rapidly worsening eye pain or loss of vision
And for anyone, someone who:
you believe has taken an overdose or swallowed something poisonous
Other emergency signs, for anyone
Someone who is struggling to breathe, gasping, choking, or cannot get words out
Someone who has chest pain, tightness or pressure lasting more than a few minutes
Someone who has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
Someone who is unconscious, or cannot be woken
Someone who is bleeding heavily and it will not stop with firm pressure
Someone who has had a seizure that will not stop, or does not wake up afterwards
Someone who has lips or skin that look pale, blue, grey or blotchy
2
Is any of this happening?
Be seen today
Contact a poison service promptly after any swallowed detergent packet, automatic dishwasher detergent, concentrated commercial product, or unknown product.
Also call for repeated vomiting, coughing, unusual sleepiness, eye exposure, or uncertainty about the risk.
Do not wait for symptoms after a potentially caustic exposure.
3
Does any of this apply?
Book an appointment
Arrange follow-up if coughing or breathlessness persists, swallowing becomes painful or difficult, or eye redness, pain, or blurred vision continues.
Routine follow-up is usually unnecessary after a minor, symptom-free exposure when a poison specialist has advised home observation.
The article also says
Do not make the person vomit while waiting for help.
If detergent is in the eye or on the skin, continue rinsing when safe.
Every sign above is quoted from the sofidex article on Detergent poisoning. If you are not sure, err upward — it is always reasonable to be checked.