A set of 26 Olanzapine tablets, which could cause severe side effects, were stolen from a resident’s home on St Rumbold’s Street in Lincoln.
The theft occurred on July 14 between 8am and 9am.
Police said the tablets can cause side effects and should not be taken unless prescribed.
It is not believed anything else was stolen.
Police are warning about the dangers of taking medication without medical supervision
Anyone with information should call 101 quoting crime refference number 32140031826.