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 for difficulty breathing, a seizure, collapse, severe confusion, inability to wake normally, or no urine with marked illness.
These are emergency symptoms rather than reasons to wait for routine follow-up.
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 information service promptly after any swallowed merbromin exposure, even if there are no symptoms.
Also seek advice after repeated use on burns, open wounds, or large areas of skin.
Do not wait for a mercury test before asking for help.
Get urgent medical assessment for:
Persistent vomiting or significant abdominal pain
Reduced urination or new swelling
Eye pain, ongoing redness, or blurred vision
Increasing weakness, tremor, confusion, or poor coordination
Symptoms after a child has swallowed or may have swallowed the product
3
Does any of this apply?
Book an appointment
Arrange routine follow-up if a clinician has advised repeat kidney, urine, or mercury testing.
New mild tremor, tingling, rash, reduced appetite, or ongoing digestive symptoms should be reported rather than left until the next planned appointment.
Every sign above is quoted from the sofidex article on Merbromin poisoning. If you are not sure, err upward — it is always reasonable to be checked.