side effect 
noun
A secondary, typically undesirable effect of a drug or medical treatment: many anti-cancer drugs now in use have toxic side effects...
- Most of those who had had a stroke were aware of their own drug treatment and were concerned about the side effect of drugs.
- Tell your doctor if you have had a particular side effect from a pain medication in the past.
- If priapism has occurred as a side effect of medication then a different medication can usually be prescribed.
- reinstalment
- reinstate
- reinstatement
- reinstation
- reinstator
- reinstauration
- reinstaure
- reinstil
- reinstitute
- universal arithmetic
- Universal Aunt
- Universal Aunts
- universal bank
- universal banking
- universal bishop
- Universal City
- universal compass
- universal coupling
- universal decimal classification
- universal donor
- universal gas constant
- universal grammar
- universalia
- universalian
- universal indicator