Cannabis-based medicine for nausea and vomiting in people treated with chemotherapy for cancer
Capecitabine for ER-positive versus ER-negative breast cancer
Capsaicin applied to the skin for chronic neuropathic pain in adults
Capsaicin for allergic rhinitis
Capsaicin for non-allergic rhinitis
Capsule endoscopy for the diagnosis of oesophageal varices in people with chronic liver disease or portal vein thrombosis
Carbamazepine and oxcarbazepine for the treatment of behavioural and psychological symptoms of dementia (BPSD)
Carbamazepine does not appear to be effective in reducing cocaine dependence, with high dropout rates and adverse effects
Carbamazepine for chronic neuropathic pain and fibromyalgia in adults
Carbamazepine for schizophrenia
Carbamazepine versus phenobarbitone monotherapy (single drug treatment) for epilepsy
Carbamazepine versus phenytoin (given as a single drug treatment) for epilepsy
Carbamazepine versus valproate monotherapy for epilepsy
Carbetocin for preventing postpartum haemorrhage
Carbohydrate or fat-restricted diets for obesity
Carbohydrate supplementation of human milk to promote growth in preterm infants
Carbon dioxide detection for diagnosis of inadvertent respiratory tract placement of enterogastric tubes in children
Carbon dioxide detection for testing nasogastric tube placement in adults
Carbonic anhydrase inhibitors for hypercapnic ventilatory failure in chronic obstructive pulmonary disease
Cardiac resynchronization therapy for dilated cardiomyopathy
Cardiac testing for coronary artery disease in potential kidney transplant recipients
Cardioselective beta-blockers for reversible airway disease
Cardiotocography (a form of electronic fetal monitoring) for assessing a baby's well-being in the womb during pregnancy
Cardiotocography for antepartum fetal assessment
Cardiovascular safety of phosphodiesterase inhibitors for treating erectile dysfunction in elderly men
Care co-ordination interventions to improve outcomes during pregnancy and early childhood (up to 5 years)
Care delivery and self management strategies for adults with epilepsy
Care delivery and self-management strategies for children with epilepsy
Care for pregnant women who have experienced genital cutting
Care prior to the next pregnancy for women diagnosed with gestational diabetes
Caregiver-mediated exercises for improving outcomes after stroke
Cariprazine versus placebo for schizophrenia
Carisbamate add-on therapy for drug-resistant partial epilepsy
Carnitine for fatigue in patients with multiple sclerosis (MS)
Carnitine supplementation for preterm infants with recurrent apnoea
Carnitine supplementation of parenterally fed neonates
Carnitine supplements for people with chronic kidney disease requiring dialysis
Carnitine supplements for treating people with inborn errors of metabolism
Carotid endarterectomy for asymptomatic carotid stenosis
Carotid endarterectomy for carotid stenosis in patients selected for coronary artery bypass graft surgery
Carotid surgery in patients who have symptoms with narrowing of the carotid artery
Case management approaches to home support for people with dementia
Case management for integrated care of frail older people in community settings
Case management for people with severe mental disorders
Case management: effects on professional practice and health care outcomes
Case mangement for persons with substance use disorders.
Castor oil, bath and/or enema for cervical priming and induction of labour
Cataract surgery in people with age-related macular degeneration
Catherine Marshall appointed Co-Chair of the Governing Board
Catheter ablation versus pharmacological treatment for patients with Wolff-Parkinson-White syndrome
Catheter ablation would be an alternative to inhibit recurrence of paroxysmal or persistent atrial fibrillation
Catheter insertion techniques for improving catheter function and clinical outcomes in peritoneal dialysis patients
Catheter lock treatments for catheter-related infections in children with cancer
Catheter policies for management of long-term voiding problems in adults with nerve damage affecting the bladder
Catheter type, placement and insertion techniques for preventing peritonitis in peritoneal dialysis patients
Catheter-directed therapies for the treatment of massive and submassive acute pulmonary embolism
Cefepime versus other beta-lactam antibiotics for the treatment of infections in non-neutropenic patients
Celebrating 20 years of Cochrane in Spain
Celebrating the 20th Anniversary of Cochrane Brazil
Celebrating three-years of Cochrane Russia at the Cochrane Russia Symposium
Celecoxib for RA
Celecoxib for Schizophrenia
Celiac plexus block (CPB) in patients with unresectable pancreatic cancer-related pain
Cell salvage (collecting a patient's own blood during surgery) for reducing transfusions with donated blood
Cell-based therapies for amyotrophic lateral sclerosis/motor neuron disease (ALS/MND)
Cell-based therapy using different sources and different treatment regimens for 'no-option' CLI patients
Celsior solution versus University of Wisconsin solution in liver preservation for transplantation
Cemented versus cementless surgical approach for total hip arthroplasty revision
Cemented versus cementless total hip arthroplasty for osteoarthrosis and other non-traumatic diseases
Central action beta-blockers versus placebo for neuroleptic-induced acute akathisia
Central venous access sites to prevent venous blood clots, blood vessel narrowing, and infection
Central venous catheter coating with antiseptics or antibiotics for reducing catheter-related infections in adults
Central venous catheter removal for adults and children suffering from bloodstream infections caused by Candida species
Centralisation of care may prolong survival in women with ovarian cancer, and possibly more generally, gynaecological cancer
Centre-based day care for children younger than five years of age in high-income countries
Centre-based day care for children younger than five years of age in low- and middle-income countries
Centre-based early education interventions for improving school readiness
Cephalic version by moxibustion for breech presentation
Cephalic version by postural management for breech presentation
Cephalocondylic intramedullary nails versus extramedullary implants for extracapsular hip fractures in adults
CERA treatment for anaemia in people with chronic kidney disease
Ceramic inlays for restoring posterior teeth
Cerebral near-infrared spectroscopy (NIRS) for perioperative monitoring of brain oxygenation in children and adults
Cerebral near-infrared spectroscopy monitoring for prevention of brain injury in very preterm infants
Cerebrolysin for acute ischaemic stroke
Cerebrolysin for Alzheimer's disease
Cerebrolysin for vascular dementia
Cerebrospinal fluid drainage for thoracic and thoracic abdominal aortic aneurysm surgery
Cerivastatin for lowering lipids
Cernilton, an extract from rye grass pollen, may help to relieve some urinary symptoms caused by an enlarged prostate gland, but more research is needed.
Certolizumab pegol for the treatment of active Crohn’s disease
Certolizumab pegol for treating adults with rheumatoid arthritis
Cervical assessment by ultrasound for preventing preterm delivery
Cervical cap versus diaphragm for birth control
Cervical cerclage in combination with other treatments for preventing preterm birth in singleton pregnancies
Cervical ripening before first trimester surgical evacuation for non-viable pregnancy
Cervical stitch (cerclage) for preventing pregnancy loss in women
Cervical stitch for preventing preterm birth in women with a multiple pregnancy
Cervico-thoracic or lumbar sympathectomy for neuropathic pain
Cessation of medication for people with schizophrenia already stable on chlorpromazine
Cetuximab: a new treatment for advanced non-small cell lung cancer
CFTR correctors, a therapy for cystic fibrosis targeted at specific mutations
Changes at the workplace for preventing disability in workers on sick leave
Changes in occupational health and safety service arrangements for increasing the uptake of preventive services in small companies
Changes in out-of-pocket payments on utilisation of health care services
Changing atrial fibrillation to a regular heart rhythm using specific drugs has no advantage over controlling the heart rate in elderly people
Changing the length of time a worker is allowed to take time off work because of illness without a physician's certificate
Characteristics of randomised trials in ophthalmology using a single eye per person design
Checkpoint inhibitors for stage I to III non-small cell lung cancer treated with surgery or radiotherapy with curative intent: a generic protocol
Chelation for autism spectrum disorder (ASD)
Chelation therapy for atherosclerotic cardiovascular (heart and circulation) disease
Chemicals for sticking the outer lung surface to surrounding membranes compared to surgery to stop air persistently collecting in the chest
Chemo-mechanical treatment of tooth decay
Chemo-radiotherapy versus surgery-based treatment for Stage IIIA non-small cell lung cancer: a systematic review and network meta-analysis
Chemoimmunotherapy versus chemotherapy for metastatic malignant melanoma
Chemoprevention agents for prostate cancer
Chemoradiation in locally advanced vulval cancer
Chemoradiotherapy for cervical cancer:  results of a meta-analysis
Chemotherapy (anticancer drugs) for patients with advanced small cell lung cancer
Chemotherapy (drug treatment) for inoperable thymic cancer in adults
Chemotherapy after surgery for early stage non-small cell lung cancer
Chemotherapy after surgery for stage III and IV endometrial cancer
Chemotherapy after surgery versus surgery alone for stomach cancer
Chemotherapy alone versus endocrine therapy alone for metastatic breast cancer
Chemotherapy and radiotherapy may improve survival and quality of life in people with advanced pancreatic cancer
Chemotherapy and supportive care versus supportive care alone for advanced non-small cell lung cancer
Chemotherapy as an adjunct to radiotherapy in locally advanced nasopharyngeal carcinoma
Chemotherapy before surgery for patients with surgically removable cancer of the esophagus
Chemotherapy before surgery in patients with adenocarcinoma of the esophagus, the gastroesophageal junction, and the stomach
Chemotherapy before surgery or radiotherapy or both for women with cervical cancer that has spread beyond the cervix to the tissues close by
Chemotherapy can improve survival rates for non-small cell lung cancer
Chemotherapy delivered via the hepatic artery following surgical resection of liver metastases arising from colorectal cancer does not improve survival.
Chemotherapy for adult women diagnosed with a rare type of ovarian cancer of all stages (malignant germ cell cancer of the ovary)
Chemotherapy for advanced gastric cancer
Chemotherapy for children with medulloblastoma
Chemotherapy for downstaging unresectable liver metastases from colorectal cancer
Chemotherapy for gallbladder cancer
Chemotherapy for men with prostate cancer who have not responded to hormone therapy
Chemotherapy for mouth and throat cancer
Chemotherapy for newly diagnosed inoperable brain metastases from non-small cell lung cancer
Chemotherapy for relapsed epithelial ovarian cancer
Chemotherapy for treating high-grade osteosarcoma in children and young adults
Chemotherapy given before surgery, compared with surgery alone for women with cervical cancer
Chemotherapy improves the survival of people with advanced colorectal cancer, but the adverse effects and impact on quality of life are not yet known.
Chemotherapy of second-stage Human African trypanosomiasis
Chemotherapy primarily aimed at improving length of life while maintaining quality of life for incurable cervical cancer
Chemotherapy versus surgery with or without adjuvant chemotherapy and radiotherapy for localised primary gastric diffuse large B-cell lymphoma
Chemotherapy with Camptothecin compounds for metastatic colorectal cancer
Chemotherapy with platinum compounds for metastatic colorectal cancer
Chemotherapy, radiotherapy or both after surgery for treatment of a rare tumour of the ovary
Chemotherapy, surgery and radiotherapy for locally advanced breast cancer
Chemotherapy-without-Ara-C versus Chemotherapy-with-Ara-C for treatment of newly diagnosed acute promyelocytic leukemia 
Chest pain observation units for patients with symptoms suggestive of acute cardiac ischaemia
Chest physiotherapy compared to no chest physiotherapy for cystic fibrosis
Chest physiotherapy for acute bronchiolitis in children younger than two years of age
Chest physiotherapy for pneumonia in adults
Chest physiotherapy for pneumonia in children
Chest physiotherapy for preventing morbidity in babies being extubated from mechanical ventilation
Chest physiotherapy for reducing respiratory morbidity in infants requiring ventilatory support
Chest shielding to prevent patent ductus arteriosus in preterm infants receiving phototherapy
Chest X-rays in acute chest infections
Chest X-rays in the treatment of acute respiratory infections
Chewing gum after surgery to help recovery of the digestive system
Chewing gum for postoperative recovery of gastrointestinal function
Child protection training for professionals to improve reporting of child abuse and neglect
Child-focused cognitive behavioural therapy for children who have been physically abused
Child-focused psychosocial interventions for anger and aggression in children under 12 years of age
Children with dehydration due to gastroenteritis need to be rehydrated, and this review did not show any important differences between giving fluids orally or intravenously
Chimeric antigen receptor (CAR) T-cell therapy for people with relapsed or refractory diffuse large B-cell lymphoma
Chinese herbal medicine (CHM) in the treatment of ectopic pregnancy.
Chinese herbal medicine alone or combined with vitamins for gastric precancerous lesions
Chinese herbal medicine for advanced pancreatic cancer
Chinese herbal medicine for allergic rhinitis
Chinese herbal medicine for female subfertility
Chinese herbal medicine for schizophrenia
Chinese herbal medicine for treating recurrent urinary tract infections in women
Chinese herbal medicine for treatment of diabetic peripheral neuropathy
Chinese herbal medicine Huangqi type formulations for nephrotic syndrome
Chinese herbal medicine may help reduce menstrual pain.
Chinese herbal medicine suxiao jiuxin wan for angina pectoris
Chinese herbal medicine taken by mouth or applied to the skin for atopic eczema in children and adults
Chinese herbal medicines for adverse events of transarterial chemoembolization in patients with primary liver cancer
Chinese herbal medicines for benign thyroid nodules in adults
Chinese herbal medicines for hypercholesterolemia
Chinese herbal medicines for hyperthyroidism
Chinese herbal medicines for hypertriglyceridaemia
Chinese herbal medicines for hypothyroidism
Chinese herbal medicines for osteoporosis
Chinese herbal medicines for people with impaired glucose tolerance or impaired fasting blood glucose
Chinese herbal medicines for subfertile women with polycystic ovarian syndrome
Chinese herbal medicines for the treatment of neonatal jaundice
Chinese herbal medicines for the treatment of pre-eclampsia
Chinese herbal medicines for threatened miscarriage
Chinese herbal medicines for treating diabetic foot ulcers
Chinese herbal medicines for treating diabetic kidney disease
Chinese herbal medicines for treating gestational diabetes mellitus
Chinese herbal medicines for type 2 diabetes mellitus
Chinese herbal medicines for unexplained recurrent miscarriage
Chinese herbal medicines for weight loss
Chinese herbs combined with Western medicine for treating severe acute respiratory syndrome (SARS)
Chinese herbs for endometriosis
Chinese herbs for insomnia
Chinese medical herbs for chemotherapy side effects in colorectal cancer patients
Chinese medicinal herbs for acute bronchitis
Chinese medicinal herbs for cholelithiasis
Chinese medicinal herbs for influenza
Chinese medicinal herbs for measles
Chinese medicinal herbs for mumps
Chinese medicinal herbs for oesophageal cancer
Chinese medicinal herbs for sore throat
Chinese medicinal herbs for the treatment of side-effects from chemotherapy in breast cancer patients
Chinese medicinal herbs for treating acute inflammation of the pancreas
Chinese medicinal herbs for urinary calculi
Chinese medicinal herbs for vaginal bleeding of medical abortion
Chinese medicinal herbs to treat the common cold
Chinese medicine for immunological functions in women with breast cancer or a history of breast cancer
Chitosan for overweight or obesity
CHIVA method for the treatment of varicose veins
Chlamydia antibody titer testing versus hysterosalpingography for detection of tubal pathology in subfertile women
Chlorambucil for patients with primary biliary cirrhosis
Chlorambucil for the treatment of patients with chronic lymphocytic leukaemia, or small lymphocytic lymphoma
Chlorhexidine interventions for the prevention of caries in adults
Chlorhexidine mouthrinse to reduce gingivitis and plaque build-up
Chlorhexidine skin care for prevention of mortality and infection in neonates
Chlorhexidine versus topical fluoride treatment for the prevention and management of dental caries in children and adolescents
Chloroquine as a steroid sparing agent for asthma
Chloroquine or amodiaquine combined with sulfadoxine-pyrimethamine for treating uncomplicated malaria
Chloroquine or hydroxychloroquine for prevention and treatment of COVID-19
Chloroquines for the treatment of osteoarthritis
Chlorproguanil-dapsone for treating malaria
Chlorpromazine compared with newer atypical antipsychotics
Chlorpromazine dose for people with schizophrenia
Chlorpromazine for treating aggression or agitation due to psychosis
Chlorpromazine versus lithium for people with schizophrenia
Chlorpromazine versus metiapine for schizophrenia
Chlorpromazine versus penfluridol for schizophrenia
Chlorpromazine versus piperacetazine for schizophrenia
Chlorpromazine versus placebo for schizophrenia
Chlorpromazine versus reserpine for schizophrenia
Chlorpromazine versus thiothixene for people with schizophrenia
Choice of bypass graft material for lower-limb arterial bypasses
Cholesterol-reducing drugs for brain haemorrhage (subarachnoid haemorrhage)
Choline precursors for acute and subacute ischemic and hemorrhagic stroke
Cholinergic medication for antipsychotic-induced tardive dyskinesia
Cholinesterase inhibitors (ChEIs), donepezil, galantamine and rivastigmine are efficacious for mild to moderate Alzheimer's disease
Cholinesterase inhibitors are beneficial for people with Parkinson's disease and dementia
Cholinesterase inhibitors for people with delirium, not including those in intensive care units
Cholinesterase inhibitors for vascular dementia and other vascular cognitive impairments: a network meta-analysis
Chondroitin for osteoarthritis
Chorion villus sampling versus amniocentesis for prenatal diagnosis