Nurse could have killed him!

My OH has been booked in for a colonoscopy on Monday afternoon, but as he was at the hospital last week he did his assessment face to face with the nurse. She wrote on the notes for preparation to take sachet a at 6pm and b at 9pm on Sunday. If he’d followed this he could have been 999 into a&e as this amount of laxative would have been enough to be dangerous for anyone! Fortunately for him I’m on it and noticed the corrected when he started the first dose.

I can’t express how much I’m worried about this because he has learning difficulties and I worry that if someone else gets this information they might not have anyone to prevent them from following this and could be in serious danger.

would you put a complaint in? He’s a frequent flyer at this hospital because they are treating his cancer, and he worries that it would be held against him.