Seroquel vs. Clonazepam


We compare the side effects and drug effectiveness of Seroquel and Clonazepam. The study is created by eHealthMe based on reports of 259,579 people who take Seroquel and Clonazepam, and is updated regularly.

What's eHealthMe?

eHealthMe is a health data analysis company based in Mountain View, California. eHealthMe monitors and analyzes the outcomes of drugs and supplements that are currently on the market. The results are readily available to health care professionals and consumers.

eHealthMe has released original studies on market drugs and worked with leading universities and institutions such as IBM, London Health Science Centre, Mayo Clinic, Northwestern University and VA. eHealthMe studies have now been referenced in over 500 peer-reviewed medical publications.

How we gather our data?

Healthcare data is obtained from a number of sources including the Food and Drug Administration (FDA). This information is aggregated and used to produce personalized reports that patients can reference.

The information that eHealthMe collects includes:

  • Side effects (including severity and how people recover from them)
  • Associated conditions or symptoms
  • Drug effectiveness
  • Demographic data regarding drug use

How the study uses the data?

The study is based on quetiapine fumarate and clonazepam (the active ingredients of Seroquel and Clonazepam, respectively). Other drugs that have the same active ingredients (e.g. generic drugs or brand names) are also considered.

What is Seroquel?

Seroquel has active ingredients of quetiapine fumarate. It is often used in bipolar disorder. (latest outcomes from Seroquel 101,225 users)

What is Clonazepam?

Clonazepam has active ingredients of clonazepam. It is often used in stress and anxiety. (latest outcomes from Clonazepam 83,696 users)

How to use the study?

Patients can bring a copy of the report to their healthcare provider to ensure that all drug risks and benefits are fully discussed and understood. It is recommended that patients use the information presented as a part of a broader decision-making process.

On Mar, 23, 2019

259,579 people who take Seroquel and Clonazepam are studied.

Number of reports submitted per year:

Seroquel vs Clonazepam drug comparison reports.

Drugs in this study:

  • Clonazepam (clonazepam)
  • Seroquel (quetiapine fumarate)

Most common side effects:

  1. Drug Ineffective
  2. Nausea (feeling of having an urge to vomit)
  3. Fatigue (feeling of tiredness)
  4. Headache (pain in head)
  5. Depression
  6. Pain
  7. Dizziness
  8. Diarrhoea
  9. Fall
  10. Dyspnoea (difficult or laboured respiration)
  1. Diabetes Mellitus (diabetes, caused by a deficiency of the pancreatic hormone insulin)
  2. Weight Increased
  3. Depression
  4. Type 2 Diabetes Mellitus
  5. Drug Ineffective
  6. Somnolence (a state of near-sleep, a strong desire for sleep)
  7. Completed Suicide (act of taking one's own life)
  8. Pancreatitis (inflammation of pancreas)
  9. Nausea (feeling of having an urge to vomit)
  10. Fatigue (feeling of tiredness)

Most common side effects experienced by people in long term use:

  1. Depression
  2. Pain
  3. Headache (pain in head)
  4. Fatigue (feeling of tiredness)
  5. Dizziness
  6. Nausea (feeling of having an urge to vomit)
  7. Suicidal Ideation
  8. Drug Withdrawal Syndrome (interfere with normal social, occupational, or other functioning. are not due to another medical condition, drug use, or discontinuation)
  9. Emotional Distress
  10. Suicide Attempt
  1. Diabetes Mellitus (diabetes, caused by a deficiency of the pancreatic hormone insulin)
  2. Type 2 Diabetes Mellitus
  3. Blood Cholesterol Increased
  4. Obesity (a medical condition in which excess body fat)
  5. Pancreatitis (inflammation of pancreas)
  6. Weight Increased
  7. Hyperlipidaemia (presence of excess lipids in the blood)
  8. Hyperglycaemia (high blood sugar)
  9. Diabetes Mellitus Inadequate Control
  10. Diabetic Ketoacidosis (diabetic ketoacidosis (dka) is high concentrations of ketone bodies)

Drug effectiveness:

  • not at all: 2.36 %
  • somewhat: 17.36 %
  • moderate: 33.54 %
  • high: 33.17 %
  • very high: 13.57 %
  • not at all: 5.55 %
  • somewhat: 21.7 %
  • moderate: 31.28 %
  • high: 28.5 %
  • very high: 12.97 %

Do you take Seroquel or Clonazepam?

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WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

You may report adverse side effects to the FDA at or 1-800-FDA-1088 (1-800-332-1088).

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.