you want to say Pharmacovisilance or side effects of medicines?

Negative effects of medicines includes side effect, adverse effect, lack of efficacy etc

Prescription medicines can cause side effects. All medicines can cause unwanted side effects. A side effect is usually regarded as an undesirable secondary effect which occurs in addition to the desired therapeutic effect of a drug or medication.

All these negative effects can be clubbed under adverse drug reaction and are monitored by Pharmacovigilance activities.

These pharmacovigilance activities are an ongoing process right from the clinical trials to the time the drug is in the market. The drugs are the approval are regularly monitored for their suspected or unexpected adverse effects.

Drugs don’t just affect patients physical body and health, they can affect patients mental health, their finances, their relationships, their social life and their criminal record.

This simply implies the after effect or side effects that might occur based on inappropriate use or prolonged use medicine or medicine related products either based on prescription or non prescription and depending on the state of health at the time of administration. Such side effects might affect the psychological, physiological, physical and economic effect of the patient.

Negative eefects of drug includes side effect,adverse effects or prolong usage without doctors advice or inappropriate dosage

Agreed with sobhika

Agree with above answers

side effects and adverse effects are negative effects of medicine s

Your question is too broad. If you have a specific class of medications, or specific adverse effects, I would be better able to assist you.

The following article is useful in related to your question:

Finding and Learning about Side Effects (adverse reactions)

The link is:

https://www.fda.gov/drugs/information-consumers-and-patients-drugs/finding-and-learning-about-side-effects-adverse-reactions

Adverse effects are the negative effects of medicines