Keflex side effects - from FDA reports

Summary

In this review, we analyze Keflex side effects by the time on the drug, gender and age of the people who have side effects while taking Keflex. The review is based on 8,669 people who have side effects while taking the drug from FDA. The information that eHealthMe analyzes includes:

  • Keflex side effects over time
  • (applicable) Keflex side effects by gender
  • Keflex side effects by age


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How the study uses the data?

The study is based on cephalexin (the active ingredients of Keflex) and Keflex (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered.

What is Keflex?

Keflex has active ingredients of cephalexin. It is often used in infection. Check the latest outcomes from 9,503 Keflex users, or browse all drugs.

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.

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

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Support Group of this study is on Ginger Health.


On Apr, 21, 2019

8,669 people who take Keflex are studied.


Number of reports submitted per year:

Keflex side effects.

Most common side effects over time *:

< 1 month:
  • Abdominal pain
  • Asthenia (weakness)
  • Adjustment disorder with mixed anxiety and depressed mood
  • Abasia (inability to walk)
  • Arthralgia (joint pain)
  • Abdominal discomfort
  • Death
  • Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
  • Dyspnoea (difficult or laboured respiration)
  • Pulmonary embolism (blockage of the main artery of the lung)
1 - 6 months:
  • Adverse event
  • Antinuclear factor positive
  • Autoimmune thyroiditis (form of thyroiditis associated with an autoimmune disease)
  • Cerebral venous thrombosis (clot in brains venous blood system)
  • Cervical dysplasia (abnormal changes in the cells on the surface of the cervix)
  • Cough
  • Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
  • Lung cancer metastatic (lung cancer spreads to other parts)
  • Accidental overdose
  • Acne (skin problems that cause pimples)
6 - 12 months:
  • Abdominal pain upper
  • Fluid overload (too much fluid in the blood)
  • Hypersensitivity
  • Micturition urgency (urgency to pass the urine)
  • Osteoarthritis (a joint disease caused by cartilage loss in a joint)
1 - 2 years:
  • Arterial stenosis (abnormal narrowing of the aortic valve in the heart)
  • Bladder disorder
  • Blister (small pocket of fluid within the upper layers of the skin caused by forceful rubbing (friction), burning, freezing, chemical exposure)
  • Memory impairment
  • Pneumonia aspiration (bronchopneumonia that develops due to the entrance of foreign materials into the bronchial tree)
  • Pre-existing condition improved
2 - 5 years:
  • Pancreatic neuroendocrine tumour
  • Adrenal adenoma (benign tumour of the glandular type (adenoma) in the adrenal gland)
  • Arthritis (form of joint disorder that involves inflammation of one or more joints)
  • Dizziness
  • Hypersomnia (excessive daytime sleepiness (eds))
5 - 10 years:
  • Aggression
  • Loss of consciousness
10+ years:
  • Abdominal pain
  • Angina pectoris (chest pain due to ischemia of the heart muscle)
  • Asthma
  • Dizziness
not specified:
  • Drug hypersensitivity
  • Abdominal pain
  • Anxiety
  • Anaemia (lack of blood)
  • Abdominal pain upper
  • Arthralgia (joint pain)
  • Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
  • Drug ineffective
  • Death
  • Asthenia (weakness)

Most common side effects by gender *:

female:
  • Drug hypersensitivity
  • Abdominal pain
  • Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
  • Anxiety
  • Arthralgia (joint pain)
  • Anaemia (lack of blood)
  • Abdominal pain upper
  • Abdominal discomfort
  • Drug ineffective
  • Asthenia (weakness)
male:
  • Drug hypersensitivity
  • Abdominal pain
  • Arthralgia (joint pain)
  • Atrial fibrillation (fibrillation of the muscles of the atria of the heart)
  • Cardiac disorder
  • Abdominal distension
  • Chest pain
  • Dyspnoea (difficult or laboured respiration)
  • Acute myocardial infarction (acute heart attack)
  • Anxiety

Most common side effects by age *:

0-1:
  • Thrombocytopenia (decrease of platelets in blood)
  • Acute respiratory failure
  • Anaphylactoid reaction (type of anaphylaxis that does not involve an allergic reaction but is due to direct mast cell degranulation)
  • Blood urine
  • Abdominal distension
  • Abortion (termination of pregnancy)
  • Accidental drug intake by child
  • Acute respiratory distress syndrome
  • Agitation (state of anxiety or nervous excitement)
  • Anaemia (lack of blood)
2-9:
  • Inflammatory bowel disease
  • Accidental exposure
  • Drug ineffective
  • Foetal exposure during pregnancy (exposing your unborn child to contraindicated in pregnancy leads birth defect)
  • Anoxic encephalopathy (brain damage due to lack of oxygen)
  • Asthenia (weakness)
  • Atherosclerosis (disorder of the arteries)
  • Crohn's disease (condition that causes inflammation of the gastrointestinal tract)
  • Kyphosis (a condition of over-curvature of the thoracic vertebrae (upper back))
  • Peritonitis bacterial (inflammation of the peritoneum, the thin tissue that lines the inner wall of the abdomen and covers most of the abdominal organs by bacterial)
10-19:
  • Abdominal pain
  • Acne (skin problems that cause pimples)
  • Crohn's disease (condition that causes inflammation of the gastrointestinal tract)
  • Alanine aminotransferase increased
  • Back pain
  • Somnolence (a state of near-sleep, a strong desire for sleep)
  • Anger
  • Depression
  • Diabetes insipidus (diabetes caused by a deficiency of the pituitary hormone vasopressin, which regulates kidney function)
  • Electrocardiogram qt prolonged
20-29:
  • Abdominal pain lower
  • Acute pulmonary oedema (sudden deposit of fluid in the lung))
  • Asthenia (weakness)
  • Anal fissure
  • Anaphylactic shock (severe and rapid and sometimes fatal hypersensitivity reaction to a substance)
  • Angioneurotic oedema (swelling that occurs just beneath the surface of the skin or mucous membranes)
  • Arthralgia (joint pain)
  • Cholecystitis chronic (long lasting infection of gallbladder)
  • Drug hypersensitivity
  • Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
30-39:
  • Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
  • Abdominal pain
  • Drug hypersensitivity
  • Anxiety
  • Pulmonary embolism (blockage of the main artery of the lung)
  • Arthralgia (joint pain)
  • Weight decreased
  • Abdominal pain upper
  • Dehydration (dryness resulting from the removal of water)
  • Nausea (feeling of having an urge to vomit)
40-49:
  • Drug hypersensitivity
  • Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
  • Abdominal pain
  • Abdominal pain upper
  • Anxiety
  • Injury
  • Pulmonary embolism (blockage of the main artery of the lung)
  • Arthritis (form of joint disorder that involves inflammation of one or more joints)
  • Chest pain
  • Anaemia (lack of blood)
50-59:
  • Drug hypersensitivity
  • Anxiety
  • Abdominal pain
  • Abdominal pain upper
  • Chest pain
  • Back pain
  • Arthralgia (joint pain)
  • Drug ineffective
  • Depression
  • Dyspnoea (difficult or laboured respiration)
60+:
  • Drug hypersensitivity
  • Death
  • Abdominal pain
  • Arthralgia (joint pain)
  • Asthenia (weakness)
  • Weight decreased
  • Anaemia (lack of blood)
  • Abdominal discomfort
  • Drug ineffective
  • Atrial fibrillation (fibrillation of the muscles of the atria of the heart)

* Approximation only. Some reports may have incomplete information.


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