Here you’ll find 31 Pills that start with C that begin with C, organized from “Calcium acetate” to “Cyproheptadine”. These medicines include common over-the-counter and prescription pills you encounter in clinics, pharmacies, and households. Many are widely prescribed and some are available without a prescription.

Pills that start with C are medications whose established names begin with the letter C. Some of these drugs, like ciprofloxacin and cetirizine, became household names because of widespread use.

Below you’ll find the table with Name, Primary use, Drug class, Common side effects, Formulation, and Notes.

Name: The official pill name shown here helps you find the exact drug quickly when comparing labels or prescriptions.

Primary use: You see the main condition or symptom the pill treats, so you know its common purpose at a glance.

Drug class: This tells you the therapeutic family, which helps you understand how the medicine works and similarities with others.

Common side effects: Lists frequent mild to moderate effects so you recognize typical reactions and decide whether to seek advice.

Formulation: Notes the usual oral pill form, like tablet or capsule, so you can match what you have in hand.

Notes: Includes concise facts, brand names, or warnings that help you interpret the entry and use the table practically.

Pills that start with C

NameGeneric namePrimary useDrug class
CitalopramCitalopramDepressionSSRI antidepressant
CiprofloxacinCiprofloxacinBacterial infectionsFluoroquinolone antibiotic
ClonazepamClonazepamSeizures and panic disorderBenzodiazepine anticonvulsant
ClopidogrelClopidogrelPrevent heart attack and strokeAntiplatelet agent
CelecoxibCelecoxibPain and arthritisCOX2 selective NSAID
CarvedilolCarvedilolHeart failure and hypertensionBeta blocker and alpha blocker
CetirizineCetirizineAllergic symptomsSecond generation antihistamine
CodeineCodeinePain and cough suppressionOpioid analgesic
ColchicineColchicineGout flare treatmentAntigout agent
CyclobenzaprineCyclobenzaprineMuscle spasm reliefSkeletal muscle relaxant
Calcium carbonateCalcium carbonateAntacid and supplementAntacid and mineral supplement
CoumadinWarfarinPrevent blood clotsVitamin K antagonist anticoagulant
CrestorRosuvastatinLower cholesterolHMG CoA reductase inhibitor
ClarithromycinClarithromycinBacterial infectionsMacrolide antibiotic
CandesartanCandesartan cilexetilHypertensionAngiotensin II receptor blocker
CephalexinCephalexinBacterial infectionsFirst generation cephalosporin antibiotic
ClindamycinClindamycinBacterial infectionsLincosamide antibiotic
CarbamazepineCarbamazepineSeizures and bipolar disorderAnticonvulsant mood stabilizer
ClozapineClozapineTreatment resistant schizophreniaAtypical antipsychotic
CyclosporineCyclosporine oralPrevent organ rejectionCalcineurin inhibitor immunosuppressant
ColesevelamColesevelam hydrochlorideLower cholesterol and glycemic controlBile acid sequestrant
CefuroximeCefuroxime axetilBacterial infectionsSecond generation cephalosporin antibiotic
ChlorpheniramineChlorpheniramine maleateAllergy symptomsFirst generation antihistamine
ChlorpromazineChlorpromazinePsychosis and severe nauseaTypical antipsychotic
ChlorthalidoneChlorthalidoneHypertensionThiazide like diuretic
CyproheptadineCyproheptadineAllergy and appetite stimulationAntihistamine with antiserotonergic effects
CyanocobalaminCyanocobalaminVitamin B12 deficiencyVitamin supplement
CefadroxilCefadroxilBacterial infectionsFirst generation cephalosporin antibiotic
Calcium acetateCalcium acetateControl phosphate in kidney diseasePhosphate binder and mineral supplement
CaptoprilCaptoprilHypertension and heart failureACE inhibitor
CarisoprodolCarisoprodolMuscle spasmsCentrally acting muscle relaxant

Descriptions

Citalopram
Treats depression and anxiety. SSRI. Common side effects nausea headache dry mouth sleepiness sexual dysfunction. Oral tablet typical 10 20 40 mg. Warning for increased suicidal thoughts in young adults. Source dailymed.nlm.nih.gov
Ciprofloxacin
Used for urinary respiratory and skin infections. Side effects nausea diarrhea dizziness tendon pain photosensitivity. Oral tablet common 250 500 750 mg. Risk tendon rupture and neuropathy. Source fda.gov
Clonazepam
Used for seizure control and panic disorder. Side effects drowsiness dizziness coordination problems memory issues. Oral tablet typical 0.25 0.5 1 mg. High risk dependence and withdrawal. Source dailymed.nlm.nih.gov
Clopidogrel
Prevents blood clots after stents or stroke. Side effects bleeding bruising rash abdominal pain. Oral tablet usual 75 mg. High bleeding risk consult clinician. Source fda.gov
Celecoxib
Treats pain osteoarthritis and rheumatoid arthritis. Side effects stomach pain edema headache increased blood pressure. Oral capsule typical 100 200 mg. Increased cardiovascular risk with long term use. Source fda.gov
Carvedilol
Treats heart failure and high blood pressure. Side effects dizziness fatigue weight gain slow heart rate. Oral tablet common 3.125 6.25 12.5 25 mg. Taper to stop. Source dailymed.nlm.nih.gov
Cetirizine
Relieves hay fever and allergy symptoms. Side effects drowsiness dry mouth headache fatigue. Oral tablet typical 5 10 mg. OTC nonprescription. Source nhs.uk
Codeine
Used for mild to moderate pain and cough. Side effects constipation drowsiness nausea dependence respiratory depression. Oral tablet doses vary 15 30 60 mg in combos common. High risk opioid. Source fda.gov
Colchicine
Treats acute gout flares and familial Mediterranean fever. Side effects diarrhea nausea abdominal pain bone marrow suppression when toxic. Oral tablet common 0.6 mg. Narrow therapeutic window. Source fda.gov
Cyclobenzaprine
Short term relief of muscle spasm. Side effects drowsiness dry mouth dizziness constipation. Oral tablet common 5 10 mg. Avoid with MAOI. Source dailymed.nlm.nih.gov
Calcium carbonate
Used for heartburn and calcium supplementation. Side effects constipation gas bloating risk kidney stones with excess. Oral chewable tablet common 500 1000 mg. OTC available. Source fda.gov
Coumadin
Prevents thromboembolism. Side effects bleeding bruising hair loss nausea. Oral tablet dosing individualized with INR monitoring. High risk drug with many interactions. Source fda.gov
Crestor
Lowers LDL cholesterol and reduces cardiovascular risk. Side effects muscle pain headache constipation nausea. Oral tablet common 5 10 20 40 mg. Monitor liver enzymes. Source dailymed.nlm.nih.gov
Clarithromycin
Treats respiratory infections skin infections and H pylori. Side effects nausea taste disturbance diarrhea liver enzyme elevation. Oral tablet typical 250 500 mg. Many drug interactions. Source fda.gov
Candesartan
Lowers blood pressure and treats heart failure. Side effects dizziness cough hypotension elevated potassium. Oral tablet common 4 8 16 32 mg. Avoid in pregnancy. Source dailymed.nlm.nih.gov
Cephalexin
Treats skin bone and respiratory infections. Side effects diarrhea nausea rash yeast infection. Oral capsule tablet typical 250 500 mg. Source nhs.uk
Clindamycin
Treats skin bone and anaerobic infections. Side effects diarrhea nausea risk of C difficile colitis rash. Oral capsule common 150 300 450 mg. Source fda.gov
Carbamazepine
Used for epilepsy trigeminal neuralgia and bipolar disorder. Side effects dizziness drowsiness nausea rash low sodium. Oral tablet typical 200 mg. Serious rash risk in some patients. Source dailymed.nlm.nih.gov
Clozapine
Effective for resistant psychosis. Side effects sedation drooling weight gain constipation seizures low white blood cell count. Oral tablet common 25 100 mg. High risk requires blood monitoring. Source fda.gov
Cyclosporine
Prevents transplant rejection and treats autoimmune diseases. Side effects kidney toxicity hypertension tremor gum overgrowth. Oral capsule dosage individualized. High risk immunosuppressant. Source dailymed.nlm.nih.gov
Colesevelam
Lowers LDL cholesterol and may improve blood sugar. Side effects constipation bloating indigestion nausea. Oral tablet common 625 mg taken multiple times daily. Source fda.gov
Cefuroxime
Treats respiratory urinary and skin infections. Side effects diarrhea nausea rash. Oral tablet available 250 500 mg. Source nhs.uk
Chlorpheniramine
Treats allergy symptoms and common cold. Side effects drowsiness dry mouth blurred vision urinary retention. Oral tablet common 4 mg. OTC available. Source dailymed.nlm.nih.gov
Chlorpromazine
Used for schizophrenia severe agitation and nausea. Side effects sedation weight gain dry mouth tremor movement disorders. Oral tablet doses vary. Monitor for tardive dyskinesia and cardiac effects. Source fda.gov
Chlorthalidone
Lowers blood pressure and reduces fluid retention. Side effects low potassium high uric acid dizziness increased blood sugar. Oral tablet common 12.5 25 50 mg. Source dailymed.nlm.nih.gov
Cyproheptadine
Used for allergy and off label appetite stimulation. Side effects drowsiness dry mouth dizziness blurred vision. Oral tablet typical 4 8 mg. Source nhs.uk
Cyanocobalamin
Treats B12 deficiency and related anemia. Side effects oral rare injection site reaction. Oral tablet common 500 1000 mcg. OTC and prescription forms exist. Source nhs.uk
Cefadroxil
Used for skin bone and urinary infections. Side effects diarrhea nausea rash yeast infection. Oral capsule tablet typical 500 mg. Source dailymed.nlm.nih.gov
Calcium acetate
Used to lower phosphate in dialysis patients. Side effects constipation hypercalcemia nausea. Oral tablet typical 667 mg with meals. Prescription product. Source fda.gov
Captopril
Lowers blood pressure and treats heart failure. Side effects cough dizziness high potassium low blood pressure rash taste disturbance. Oral tablet typical 12.5 25 50 mg. Avoid in pregnancy. Source dailymed.nlm.nih.gov
Carisoprodol
Used short term for acute musculoskeletal pain. Side effects drowsiness dizziness dependence nausea. Oral tablet common 250 350 mg. Controlled substance in many regions. Source fda.gov
If you think there is a missing term, let us know using the contact form.