My wife goes over every tablet for our daughter with a fine tooth comb or rather an illuminated magnifying glass, She has picked up a few oddities including some wrongly package items once or twice. She is driven potty by changes in the shape, style or colour of tablets. Any disturbance to our daughter’s regime is highly likely to have ‘consequences’, including those involving big white ‘vans’ with blue lights., though it does not always take a tablet error to need one of those.