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 exposed person:
Has trouble breathing, severe wheezing, or throat swelling
Collapses, has a seizure, or cannot be awakened
Is confused, very weak, or showing signs of shock
Vomits blood or has severe chest or abdominal pain
Has a serious eye injury or sudden 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 centre immediately after any suspected swallowing.
Also seek prompt advice for an eye splash, breathing symptoms, a concentrated skin exposure, or an exposure involving a child.
In the United States, Poison Control is available at 1-800-222-1222.
Elsewhere, use your local poison information service.
Increasing difficulty swallowing, food sticking, ongoing cough, persistent skin pain, or changes in vision should not wait for a routine appointment.
3
Does any of this apply?
Book an appointment
Arrange routine follow-up if symptoms are improving but do not fully settle, or if a healthcare team has recommended review.
Every sign above is quoted from the sofidex article on Sodium bisulfate poisoning. If you are not sure, err upward — it is always reasonable to be checked.