Niacin is compatible
The drugNiacin is allowed to be used with these concomitant diseases or interaction effects are not currently established.
- (+) ANA titer
- (+) tuberculin test
- (fat soluble) vitamin deficiency
- Abnormal genital bleeding
- Abnormal uterine bleeding
- Abnormal vaginal bleeding
- Accessory AV pathway
- Accessory AV tracts
- Achlorhydria
- Acid/base balance
- Acid/base imbalance
- Acidosis
- Active bleeding
- Active malignancy
- Acute abdominal conditions
- Acute alcohol intoxication
- Acute bronchospasm
- Acute critical illness
- Acute MI
- Acute myocardial infarction recovery
- Acute renal failure
- Acute surgical abdomen
- Addison disease
- ADHD
- Adrenal dysfunction
- Adrenal insufficiency
- Adrenal toxicity
- Adrenal tumors
- Adrenocortical insufficiency
- Agitation
- Agranulocytosis
- Agranulocytosis/neutropenia
- Alcohol
- Alcohol intox
- Alcohol intoxication
- Alcoholic hepatitis
- Alcoholism
- Alkalosis
- Allergic reactions
- Allergies
- Allergies to goat and goat milk.
- ALT elevations
- Altered CO2 tension/ventilation
- Aluminum toxicity
- Aluminum toxicity/renal impairment
- AMI
- Anaphylaxis
- Androgen dependent tumors
- Androgen- dependent neoplasm
- Anemia
- Angina
- Angioedema
- Angle closure glaucoma
- Angle-closure glaucoma
- Angle-closure glaucoma
- Anhydrosis
- Anorexia nervosa
- Antibody response
- Anticholinergic activity
- Anticholinergic effects
- Antidopaminergic effects 1
- Antidopaminergic effects 2
- Antiemetic effect
- Anuria
- Aortic aneurysm
- Aortic stenosis
- Aphakia
- Aplastic anemia
- Arrhythmia
- Arrhythmias
- Arterial bleeding
- Arterial thromboembolism
- Aspiration
- Aspiration pneumonia
- Asthma
- Asthma/allergies
- Asthma/COPD
- Asthmatics
- Atrial fibrillation
- Atrioventricular block
- Auditory and ocular abnormalities
- Auditory dysfunction
- Autoimmune disease
- Autoimmune diseases
- Autoimmune disorders
- Autoimmune hepatitis
- Autoimmunity
- Autonomic dysreflexia
- Autonomic neuropathy
- B12 deficiency
- Bacterial endocarditis
- Biliary and pancreatic disease
- Biliary cirrhosis
- Biliary colic
- Biliary obstruction
- Biliary spasm
- Bipolar disorder
- Bipolar disorder screening
- Bipolar disorders
- Bipolar screening
- Bladder cancer
- Bleeding
- Bleeding disorders
- Bleeding risks
- Blood disorders
- Blood dyscrasias
- Blood glucose
- Blood isoagglutinin
- Blood pressure
- Bone disease
- Bone fractures
- Bone marrow aplasia
- Bone marrow depression
- Bone marrow depression/blood dyscrasias
- Bone marrow suppression
- Bone marrow transplantation
- Bone mineral density
- Bone toxicity
- Bowel obstruction
- BPH
- Bradyarrhythmia
- Bradyarrhythmia/AV block
- Bradyarrhythmias
- Bradycardia
- Bradycardia/AV block
- Breast cancer
- Breast malignancy
- Bronchial asthma
- Bronchoconstriction
- Bronchospasm
- Bronchospasm/angioedema.
- Burns
- C. diff
- Cachexia
- CAD risk factors
- Calcium- phosphate calcifications
- Cancer
- Capillary leak syndrome
- Carcinoid syndrome
- Carcinoma (male)
- Carcinomas (estrogenic)
- Cardiac arrhythmias
- Cardiac contraction/conduction
- Cardiac disease
- Cardiac disease/cardiotoxicity
- Cardiac dysfunction
- Cardiac failure
- Cardiac rhythm disturbances
- Cardiac tamponade
- Cardiac toxicity
- Cardiac valve disease/arrhythmias
- Cardiac valvular disorders
- Cardiac/pulmonary disease
- Cardiogenic shock
- Cardiogenic shock/hypotension
- Cardiomyopathy
- Cardiopulmonary disease
- Cardiopulmonary reactions
- Cardiorespiratory conditions
- Cardiotoxicity
- Cardiovascular
- Cardiovascular adverse effects
- Cardiovascular complications
- Cardiovascular disease
- Cardiovascular disorders
- Cardiovascular dysfunction
- Cardiovascular effects
- Cardiovascular Events
- Cardiovascular risk
- Carnitine deficiency
- Cataracts
- Central nervous system
- Cerebral or retinal hemorrhage
- Cerebral vascular insufficiency
- Cerebral vasculopathy
- Cerebrovascular disease
- Cerebrovascular disorders
- Cerebrovascular dysfunction
- Cerebrovascular insufficiency
- CHF
- CHF/AMI
- CHF/edema
- Cholelithiasis
- Cholesterol
- Cirrhosis
- Closed-angle glaucoma
- CNS
- CNS depression
- CNS depression/coma
- CNS depression/electrolyte disturbances
- CNS disorders
- CNS dysfunction
- CNS effects
- CNS toxicity
- CNS tumors
- Coagulation
- Coagulation abnormalities
- Coagulation abnormalities/bleeding
- Coagulation defect
- Coagulation defects
- Coagulation disorders
- Coagulation test interference
- Cognitive impairment
- Colitis
- Color vision defect
- Compensatory hypertension
- Complete AV heart block
- Conduction abnormalities
- Conduction disorders
- Conduction disturbances
- Congenital optic atrophy
- Congestive heart failure
- Constipation
- Constipation/GI obstruction
- Convulsions
- COPD
- COPD/asthma
- Coronary and cerebral vascular disease
- Coronary artery/CV disease
- Creatine kinase elevations
- Creatinine clearance
- Crohn's disease
- Crystalluria
- Cutaneous malignancies
- Cutaneous manifestations
- CV
- CV acute hemorrhage
- CV disease
- CV disorders
- CV events
- CV/electrolyte imbalance
- CVD
- CVD/PVD
- Cystic fibrosis
- Cysticercosis
- Cystitis
- Cytopenia
- Cytopenias
- Decrease blood counts
- Decreased response
- Dehydration
- Dehydration/diarrhea
- Dementia
- Dementia- related psychosis
- Demyelinating disorders
- Depression
- Depression/anxiety
- Depression/psychoses
- Dermal absorption
- Dermatitis
- Dermatitis herpetiformis
- Dermatologic toxicities
- Dermatological reactions
- Diabetes
- Diabetes insipidus syndrome
- Diabetes mellitus
- Diabetes type II and microalbuminuria
- Diabetic ketoacidosis
- Diabetic patients
- Diabetic retinopathy
- Diabetics
- Dialysis
- Diaper rash
- Diarrhea
- Diarrhea/hyperhidrosis
- DIC
- Dihydropyrimidine deficiency
- Dihydropyrimidine dehydrogenase deficiency
- Disseminated intravascular coagulation
- Disulfiram reaction
- Disulfiram-like reaction
- Diverticulitis
- Diverticulosis
- DKA
- Down's syndrome
- Drug dependence
- DVT/pulmonary embolism
- Dysglycemia
- Dysphagia
- Dysphagia/respiratory disorders
- Dyspnea
- Dystonia
- Dystonic reactions
- Dysuria
- EBV
- ECG abnormalities
- Eczema
- Edema
- Electrolyte abnormalities
- Electrolyte disturbances
- Electrolyte imbalance
- Electrolyte imbalances
- Electrolyte losses
- Electrolytes
- Electrolytes abnormalities
- Electrolytes disorders
- Electrolytes/fluid
- Elevated IOP
- Elevated serum triglycerides
- Elevated triglycerides
- Elimination
- End stage renal disease
- End-stage renal disease
- Endocrine disorders
- Endocrinopathies
- Endometrial dysplasia
- Endometrial hyperplasia
- Enterocolitis
- Enzyme induction
- Eosinophilic esophagitis
- Epilepsy
- Esophageal fistula
- Esophageal irritation
- Esophageal varices
- Extrapyramidal symptoms
- Eye disorder
- Familial periodic paralysis
- Fat malabsorption
- Ferricyanide tests
- Fever
- Fistula formation
- Fluid expansion
- Fluid overload
- Fluid overload/hyponatremia
- Fluid retention
- Fluid retention/congestive heart failure
- Fluid/electrolytes
- Folate antagonism
- Folate deficiency
- Fructose intolerance
- G-6-PD deficiency
- G-6-PD/NAPD methemoglobin deficiency
- G6PD deficiency
- Galactosemia
- Gallbladder disease
- Gallbladder nonvisualization
- Gallbladder/biliary dysfunction
- Gastric hemorrhage
- Gastric retention
- Gastric ulcer
- Gastritis
- Gastroesophageal reflux
- Gastrointestinal absorption
- Gastrointestinal complications
- Gastrointestinal disease
- Gastrointestinal disorders
- Gastrointestinal irritation
- Gastrointestinal motility
- Gastrointestinal obstruction
- Gastrointestinal perforation
- Gastrointestinal toxicities
- Gastroparesis
- GBS
- Genital bleeding
- GERD
- GI adverse events
- GI bleeding
- GI complication
- GI complications
- GI disorders
- GI disturbances
- GI effects
- GI events
- GI hemorrhage
- GI hemorrhage/obstruction/perforation
- GI illness
- GI inflammation
- GI irritation
- GI malabsorption
- GI motility
- GI mucosal damage
- GI narrowing
- GI obstruction
- GI obstruction/perforation
- GI perforation
- GI retention
- GI toxicity
- GI/bladder neck obstruction
- GI/urinary obstruction
- GI/urinary obstruction/atony
- GI/UT obstruction
- Glaucoma
- Glomerulonephritis
- Glucose alterations
- Glucose intolerance
- Glycogen depletion
- Gold induced disorders
- Gout
- Granulocytopenia
- Guillain-Barre Syndrome (GBS)
- Hallucinations
- HDL cholesterol
- Head injury
- Headaches
- Hearing loss
- Heart block
- Heart disease
- Heart disease/toxicity
- Heart failure
- Heart valve disease
- Helminth infections
- Hematologic abnormalities
- Hematologic toxicities
- Hematologic toxicity
- Hematological abnormalities
- Hematological changes
- Hematological toxicity
- Hematopoietic disturbances
- Hematuria
- Hematuria/proteinuria
- Hemeralopia
- Hemochromatosis
- Hemodialysis
- Hemoglobin abnormalities
- Hemoglobinopathies
- Hemolysis
- Hemolysis/G6PD deficiency
- Hemolytic anemia
- Hemolytic uremic syndrome
- Hemophilia
- Hemorrhage
- Hemorrhagic events
- Hemostatic defects
- Heparin-induced thrombocytopenia
- Hepatic disease
- Hepatic disorder
- Hepatic dysfunction
- Hepatic encephalopathy
- Hepatic function
- Hepatic impairment
- Hepatic impairment/toxicity
- Hepatic neoplasms
- Hepatic or ductal dysfunction
- Hepatic toxicity
- Hepatic tumors
- Hepatic/renal
- Hepatic/renal dysfunction
- Hepatic/renal impairment
- Hepatitis
- Hepatitis B
- Hepatitis B reactivation
- Hepatitis C
- Hepato/renal impairment
- Hepatobiliary dysfunction
- Hepatotoxicity / hepatic dysfunction
- Hepatotoxicity/hepatic impairment
- Hepatotoxicity/liver impairment
- Herpes simplex
- HFI
- HGPRT deficiency
- High blood pressure
- Histamine release
- History of porphyria
- History of stroke
- HIV infection
- HIV/CMV
- Huntington's disease
- Hx drug/alcohol abuse
- Hyper/hypoglycemia
- Hyperadrenocorticalism
- Hyperadrenocorticism
- Hyperbilirubinemia
- Hypercalcemia
- Hypercalcemia in breast cancer
- Hyperchloremia
- Hyperglycemia/diabetes
- Hyperkalemia
- Hyperlipemia
- Hyperlipidemia
- Hyperlipoproteinemia
- Hypermagnesemia
- Hyperosmolar effects
- Hyperparathyroidism
- Hyperphosphatemia
- Hyperprolactinemia
- Hyperprolactinemia/breast cancer
- Hypersensitivity
- Hypersensitivity reaction
- Hypersensitivity reactions
- Hypertension
- Hypertension/CVD
- Hypertension/diabetes
- Hypertensive effects
- Hypertensive vascular disease
- Hyperthermia
- Hyperthyroidism
- Hyperthyroidism PKs
- Hypertriglyceridemia
- Hypertrophic cardiomyopathy
- Hypocalcemia
- Hypoglycemia
- Hypokalemia
- Hypokalemia/hypomagnesemia
- Hypomagnesemia
- Hypomania/mania
- Hyponatremia
- Hypophosphatemia
- Hypoprothombinemia
- Hypoprothrombinemia
- Hypotension/syncope
- Hypothyroidism
- IHSS
- ILD
- IM injection
- Immunization
- Immunizations
- Immunocompromised
- Immunodeficiency
- Immunosuppression
- Impaired cardiac function
- Impaired gag reflex
- Impaired GI motility
- Impaired respiratory function
- Increase systolic and diastolic blood pressure
- Increased intraocular pressure
- Increased response
- Infection
- Infections
- Infectious diarrhea
- Inflammatory bowel disease
- Inflammatory disorders
- Infusion reactions
- Inhibitory antibodies
- Injection site reaction
- Insulin/diabetes
- Insulinoma
- Interstitial lung disease
- Interstitial pneumonitis
- Intestinal disease
- Intestinal inflammation
- Intestinal obstruction
- Intestinal obstruction disorders
- Intestinal perforation
- Intracranial HTN
- Intracranial hypertension
- Intracranial pressure
- Intracranial tumors
- Intravascular clotting
- Iron overload
- Iron-deficiency anemia
- Ischemic attack
- Ischemic heart disease
- Ischemic heart disease/arrhythmias/CHF
- Ketoacidosis
- Kidney disease
- Kidney impairment
- Kidney stones
- Laboratory abnormalities
- Lactic acidosis
- Lactose intolerance
- Lactose intolerant
- Leukemia
- Leukocytosis
- Leukopenia
- Leukopenia/thrombocytopenia
- Lipid alterations
- Lipid dysfunction
- Lipid elevations
- Lipids disorder
- Live viral vaccines
- Liver
- Liver damage
- Liver disease
- Liver disease/alcoholism
- Liver disorder
- Liver dysfunction
- Liver impairment
- Liver transplantation
- Liver/renal
- Liver/renal disease
- Liver/renal impairment
- Long QT
- Long QT interval
- Low birth weight
- Lung cancer
- Lung dysfunction
- Lung toxicity
- Lung transplant
- Lupus
- Lupus erythematosus
- Lymphoid tissue hypertrophy
- Lymphoma
- Lymphopenia
- Macular edema
- Magnesium and calcium imbalance
- Major psychotic disorders
- Malabsorption
- Malabsorption syndrome
- Malabsorption syndromes
- Malignancies
- Malignancy
- Malignant hyperthermia
- Malnutrition
- Mania
- Mania/hypomania
- MAOI activity
- Marrow toxicity
- MDS/AML
- Mechanical ventilation
- Megaloblastic anemia
- Melanoma
- Melasma
- Meningeal infection
- Meningitis
- Meningococcal infections
- Menstrual bleeding
- Mental status changes
- Mental symptoms
- Metabolic acidosis
- Metabolic bone disorder
- Metabolic disorders
- Methemoglobinemia
- Methemoglobinemia in G-6-PD
- Methemoglobinemia/hypotension
- MI
- Migraines
- Milk protein allergies
- Mineral metabolism disorders
- Mixed/manic episode
- Mononucleosis
- Multiple myeloma
- Musculoskeletal disorders
- Myalgia
- Myasthenia gravis
- Myasthenic crisis
- Myeloid tumors
- Myelosuppression
- Myelosuppression/infection
- Myocardial infarction
- Myocardial infarction/stroke
- Myopathy
- Myopathy/rhabdomyolysis
- Narcolepsy
- Narrow angle glaucoma
- Narrow angles
- Narrow-angle glaucoma
- Narrow-angle/pupillary block glaucoma
- Neoplasias
- Nephrogenic systemic fibrosis
- Nephrolithiasis
- Nephrotic syndrome
- Nephrotoxicity
- Nervous system disorders
- Nervous system dysfunction
- Nervous system effects
- Neuro/psychiatric dysfunction
- Neuro/spinal
- Neuroleptic malignant syndrome
- Neurologic disorder
- Neurologic disorders
- Neurologic dysfunction
- Neurologic reactions
- Neurologic toxicity
- Neurological disorders
- Neurological toxicities
- Neuromuscular blockade
- Neuromuscular transmission
- Neuropathies
- Neuropathy
- Neuropsychiatric events
- Neurotoxicity
- Neutropenia
- Neutropenia/thrombocytopenia
- Neutropenic sepsis
- Neutrophil dysfunction
- Nitroprusside tests
- NMS
- Obesity
- Obstructive bowel disease
- Obstructive uropathy
- Ocular disease
- Ocular disorders
- Ocular dysfunction
- Ocular herpes simplex
- Ocular infections
- Ocular toxicities
- Ocular toxicity
- Oculo-/neurotoxicity
- Oculotoxicity
- Oligohidrosis/hyperthermia
- ONJ
- Ophthalmologic effects
- Ophthalmological disorders
- Optic nerve
- Optic neuritis
- Organ transplant
- Orthostatic hypotension
- Osteomalacia
- Osteonecrosis of the jaw
- Osteoporosis
- Ototoxicity
- Pancreatic dysfunction
- Pancreatitis
- Pancytopenia
- Papilledema
- Paradoxical reactions
- Paralytic ileus
- Paresis
- Paresthesia
- Parkinson
- Parkinson's disease
- Parkinsonism
- Peanut allergy
- Perforated bladder
- Perforated eardrum
- Perforated tympanic membrane
- Pericarditis
- Perimenopause
- Peripheral edema
- Peripheral neuropathy
- Peripheral neurotoxicity
- Peripheral vascular disease
- Peripheral vascular thrombosis
- Peritoneal dialysis
- Phenobarbital metabolite 1
- Phenobarbital metabolite 2
- Pheochromocytoma
- Phosphate imbalance
- Photosensitivity states
- Pituitary activity
- Pituitary tumor
- Pituitary tumors
- PKU
- Platelet aggregation inhibition
- Platelet disorders
- Platelet function
- Platelet inhibition
- PML
- Pneumonitis
- Pneumonitis/fibrosis
- Polycythemia
- Porphyria
- Posterior leukoencephalopathy syndrome
- Potassium imbalance
- PR interval prolongation
- Prader-Willi Syndrome
- Preexisting heart conditions
- Pregnancy
- Prematurity
- Premenopausal
- Premenopausal anovulation
- PRES
- Preserved left ventricular ejection
- Previous neuroleptic malignant syndrome (NMS)
- Previous x-ray therapy
- Priapism
- Prinzmetal's variant angina
- Proarrhythmic effects
- Prolonged bleeding
- Prolonged hypotension
- Protein C deficiency
- Proteinuria
- Prothrombin time alterations
- Psoriasis
- Psychiatric complications
- Psychiatric conditions
- Psychiatric disorders
- Psychoses
- Psychoses and emotional disturbances
- Psychoses/depression
- Psychosis
- Psychosis/depression
- Psychotic disorders
- PUD
- PUD/ulcerative colitis
- Pulmonary abnormality
- Pulmonary arterial hypertension
- Pulmonary conditions
- Pulmonary deterioration
- Pulmonary disease
- Pulmonary disorders
- Pulmonary dysfunction
- Pulmonary hypertension
- Pulmonary impair
- Pulmonary impairment
- Pulmonary infections
- Pulmonary infiltrates/fibrosis
- Pulmonary pneumonitis/fibrosis
- Pulmonary toxicity
- Pure red cell aplasia
- PVD
- QT interval prolongation
- QT prolongation
- QTc interval prolongation
- QTc prolongation
- Rash
- Reactive airway disease
- Reactive airway diseases
- Rectal bleeding
- Reduced clearance
- Reflux esophagitis.
- Renal
- Renal artery stenosis
- Renal damage
- Renal deficiency
- Renal disease
- Renal dysfunction
- Renal failure
- Renal failure/dialysis
- Renal function disorders
- Renal impairment
- Renal insufficiency
- Renal toxicities
- Renal toxicity
- Renal/hepatic
- Renal/hepatic dysfunction
- Renal/hepatic impairment
- Renal/liver
- Renal/liver disease
- Renal/liver dysfunction
- Renal/liver impairment
- Resp depression
- Respiratory
- Respiratory acidosis
- Respiratory complications
- Respiratory depression
- Respiratory disorders
- Respiratory distress syndrome
- Respiratory dysfunction
- Respiratory function
- Respiratory infections
- Respiratory symptoms
- Retinal abnormalities
- Retinal detachment
- Retinal disturbances
- Retinal pathology
- Retinal thrombosis
- Retinitis pigmentosa
- Retinopathy
- Reye's syndrome
- Rhabdomyolysis
- Rheumatoid arthritis
- Risk of pancreatitis
- RLS
- RPL syndrome
- Sarcoidosis
- Schizophrenia
- Schizophrenia/bipolar
- Schizophrenia/bipolar disorder
- Scleroderma
- Scoliosis
- Secondary hyperuricemia
- Sedatives/alcohol
- Seizure
- Seizure disorder
- Seizure disorders
- Seizures
- Seizures disorders
- Sensitivity to salt intake
- Sepsis
- Septic shock
- Severe allergies
- Severe anemia
- Severe CV/renal/hepatic failure
- Severe hepatic disease
- Severe hepatic impairment
- Severe hepatic/renal
- Severe hepatic/renal impairment
- Severe hypertension
- Severe kidney disease
- Severe liver disease
- Severe liver impairment
- Severe renal disease
- Severe renal dysfunction
- Severe renal impairment
- Severe ulcerative colitis
- Short QT
- Short QT syndrome
- SIADH
- Sickle cell disease
- Sinus (Includes mexiletine)
- Sinus (Includes Mexitil)
- Sinus (Includes propafenone)
- Sinus (Includes Rythmol SR)
- Sinus (Includes Rythmol)
- Sinus node dysfunction
- Sinus- AV node dysfunction
- Sinus-AV node dysfunction
- Sinus/AV node dysfunction
- Sjogren-Larsson syndrome
- Skeletal muscle myopathies
- Skin cancer
- Skin malignancies
- Skin reactions
- SLE
- Sleep apnea
- Sleep apnea/respiratory depression
- Sleep disorders
- Smoking
- Sodium
- Sodium depletion
- Sodium imbalances
- Sodium load
- Sodium/potassium
- Sodium/water balance
- Sodium/water imbalance
- Stomatitis
- Strongyloidiasis
- Subacute bacterial endocarditis
- Subarachnoid hemorrhage
- Substance abuse
- Suicidal
- Suicidal tendency
- Suicidality
- Sunburn
- Supportive therapy
- Suppression of clotting factors
- Syncope
- Systemic effects
- Systemic effects 1
- Systemic effects 2
- Systemic lupus erythematosus
- Systemic vagotonic effects
- Tachyarrhythmias
- Tachycardia
- Tardive dyskinesia
- TB
- TB infection
- Teething pain
- Tendonitis
- TG
- Thiamine deficiency
- Thrombo/hemorrhage
- Thrombocytopenia
- Thromboembolic complications
- Thromboembolic disease
- Thromboembolic disorders
- Thromboembolic events
- Thromboembolic reactions
- Thromboembolism
- Thromboembolism/cardiovascular
- Thrombohemorrhagic disorders
- Thrombosis
- Thrombotic / thromboembolic complications
- Thrombotic disorders
- Thrombotic events
- Thrombotic microangiopathy
- Thyroid abnormalities
- Thyroid abnormality
- Thyroid cancer
- Thyroid carcinoma
- Thyroid disease
- Thyroid disorder
- Thyroid disorders
- Thyroid dysfunction
- Thyroid function tests
- Thyroid/metabolic abnormality
- Thyrotoxicosis
- Tics
- Tinnitus
- TLS
- TLS/renal
- TMPT enzyme deficiency
- Toxic megacolon
- Transfusion/graft-vs-host disease
- TTP/HUS
- Tuberculosis
- Tumor growth
- Tumor lysis syndrome
- Tumors
- Turner syndrome
- Type I diabetes
- Ulcerative colitis
- Uncontrolled adrenal dysfunction
- Uncontrolled non- gonadal endocrinopathies
- Unstable blood pressure
- Upper gastrointestinal disease
- Upper GI disease
- Upper GI irritation
- Upper GI mucosal irritation
- Upper motor neuron injury
- Urea cycle disorders
- Uric acid nephrolithiasis
- Urinary complications
- Urinary infection
- Urinary obstruction
- Urinary retention
- Urinary tract infection
- Urinary tract obstruction
- Urine ketone test
- Urolithiasis
- Urticaria
- UTI
- Uveitis
- Vaccination
- Vaccinations
- Vaccines
- Vaginal bleeding
- Vaginal bleeding and reproductive organ tumors
- Valvular heart disease
- Valvulopathy
- Varicella
- Vascular disease
- Vascular disorder
- Vascular disorders
- Vascular dysfunction
- Vascular effects
- Vasculitis
- Vasoconstriction
- Vasoconstrictor
- Vasospastic reactions
- Venous thromboembolism
- Venous thrombosis
- Ventricular arrhythmia
- Ventricular tachycardia
- Viral hepatitis
- Viral infections
- Viral reactivation
- Vision loss
- Visual complications
- Visual defects
- Visual disturbances
- Visual field defects
- Visual impairment
- Visual loss
- Visualization
- Vitamin A deficiency
- Vitamin B12 deficiency
- Vitamin D deficiency
- Vitamin deficiency
- Vitamin K deficiency
- Vitamin/folate deficiency
- Volume overload
- Volume overload/renal impairment
- VTE
- Wegener's granulomatosis
- Weight gain
- Weight loss
- Wound complication
- Zinc deficiency