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
Seek emergency help for:
A severe or rapidly worsening headache with vomiting or vision changes
Confusion, collapse, a seizure, or difficulty waking
Suspected swallowing of a large amount by a child
A very large exposure followed by significant symptoms
Contact a poison information service or emergency service after a suspected large accidental exposure.
Do not induce vomiting unless specifically instructed.
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
Someone who you believe has taken an overdose or swallowed something poisonous
2
Is any of this happening?
Be seen today
Get urgent medical advice for persistent vomiting, jaundice, dark urine, significant abdominal pain, or a new persistent headache while taking a retinoid medicine.
Also seek prompt advice if excessive vitamin A or a retinoid may have been used during pregnancy.
3
Does any of this apply?
Book an appointment
A routine appointment is appropriate for gradual symptoms such as dry skin, hair loss, fatigue, or bone pain when you regularly use vitamin A supplements.
Bring all supplement and medicine labels for review.
Every sign above is quoted from the sofidex article on Hypervitaminosis A. If you are not sure, err upward — it is always reasonable to be checked.