Active substances

2,443 active substances of the UK medicines whose patient leaflet or SPC is on this site, from A to Z – with the number of medicines containing the substance alone or in a combination with other substances.

• Cefovecin (as sodium salt) 1 medicine: 1 alone
• Cefoxitin 4 medicines: 4 alone
• Cefpodoxime 1 medicine: 1 alone
• Cefradine 5 medicines: 5 alone
• Ceftaroline fosamil 1 medicine: 1 alone
• Ceftazidime 17 medicines: 16 alone · 1 in combination
• Ceftiofur 1 medicine: 1 alone
• Ceftobiprole 1 medicine: 1 alone
• Ceftolozane 1 medicine: 1 in combination
• Ceftriaxone 13 medicines: 13 alone
• Cefuroxime 29 medicines: 29 alone
• Celecoxib 11 medicines: 11 alone
• Celiprolol 6 medicines: 6 alone
• Cell-associated live recombinant turkey herpes virus (rHVT/ND) expressing the fusion protein of Newcastle diseases virus D-26 lentogenic strain 1 medicine: 1 alone
• Cell-associated live recombinant turkey herpesvirus (strain HVP360), expressing the fusion protein of ND virus and the VP2 protein of IBD virus 1 medicine: 1 alone
• Cell-associated live recombinant turkey herpesvirus (strain HVT/ILT-138), expressing the glycoproteins gD and gI of infectious laryngotracheitis virus 1 medicine: 1 alone
• Cell-associated live recombinant turkey herpesvirus (strain HVT/NDV/ILT) expressing the fusion protein of newcastle disease virus and the glycoproteins gD and gI of infectious laryngotracheitis virus 1 medicine: 1 alone
• Cemiplimab 1 medicine: 1 alone
• Cenobamate 7 medicines: 7 alone
• Ceritinib 2 medicines: 2 alone
• Cerliponase alfa 2 medicines: 2 alone
• Certolizumab pegol 3 medicines: 3 alone
• Cetalkonium 1 medicine: 1 in combination
• Cetirizine 49 medicines: 49 alone
• Cetrimide 21 medicines: 8 alone · 13 in combination
• Cetrorelix 4 medicines: 4 alone
• Cetuximab 1 medicine: 1 alone
• Cetylpyridinium 6 medicines: 1 alone · 5 in combination
• Cetylpyridinium chloride 10 medicines: 3 alone · 7 in combination
• ChAdOx1-SARS-COV-2 1 medicine: 1 alone
• Chamomile 1 medicine: 1 alone
• Characterised viable autologous cartilage cells expanded ex vivo expressing specific marker proteins 1 medicine: 1 alone
• Charcoal medicinal vegetable 1 medicine: 1 in combination
• Chenodeoxycholic acid 2 medicines: 2 alone
• Chimeric yellow fever dengue virus serotype 1 (live, attenuated), chimeric yellow fever dengue virus serotype 2 (live, attenuated), chimeric yellow fever dengue virus serotype 3 (live, attenuated), chimeric yellow fever dengue virus serotype 4 (live, 1 medicine: 1 alone
• Chloral hydrate 3 medicines: 3 alone
• Chlorambucil 1 medicine: 1 alone
• Chloramphenicol 23 medicines: 23 alone
• Chlordiazepoxide 11 medicines: 11 alone
• Chlorhexidine 44 medicines: 32 alone · 12 in combination
• Chlorhexidine hydrochloride 5 medicines: 5 in combination
• Chlormethine 1 medicine: 1 alone
• Chlorobutanol 2 medicines: 1 alone · 1 in combination
• Chlorocresol 4 medicines: 4 in combination
• Chloroprocaine 2 medicines: 2 alone
• Chloroquine phosphate 3 medicines: 3 alone
• Chloroxylenol 2 medicines: 1 alone · 1 in combination
• Chlorphenamine 18 medicines: 16 alone · 2 in combination
• Chlorpromazine 10 medicines: 10 alone
• Chlorquinaldol 2 medicines: 2 in combination
• Chlortalidone 18 medicines: 7 alone · 11 in combination
• Chlortetracycline 1 medicine: 1 in combination
• Cholera vaccine 1 medicine: 1 alone
• Cholic acid 3 medicines: 3 alone
• Choline chloride 1 medicine: 1 in combination
• Choline salicylate 3 medicines: 2 alone · 1 in combination
• Chondrogenic induced equine allogeneic peripheral blood-derived mesenchymal stem cells 1 medicine: 1 alone
• Choriogonadotropin alfa 2 medicines: 2 alone
• Chorionic gonadotrophin 3 medicines: 3 alone
• Chromic chloride 2 medicines: 2 in combination
• Chromic chloride hexahydrate 2 medicines: 2 in combination
• Chromium 1 medicine: 1 in combination
• Ciclesonide 6 medicines: 6 alone
• Ciclosporin 38 medicines: 38 alone
• Cidofovir 2 medicines: 2 alone
• Cilastatin 4 medicines: 4 in combination
• Cilazapril 4 medicines: 4 alone
• Cilostazol 3 medicines: 3 alone
• Ciltacabtagene autoleucel 1 medicine: 1 alone
• Cimetidine 22 medicines: 22 alone
• Cimicoxib 1 medicine: 1 alone
• Cinacalcet 39 medicines: 39 alone
• Cinchocaine 6 medicines: 6 in combination
• Cinchocaine hydrochloride 3 medicines: 3 in combination
• Cineole 4 medicines: 4 in combination
• Cinnamic acid 1 medicine: 1 in combination
• Cinnarizine 6 medicines: 3 alone · 3 in combination
• Cipaglucosidase alfa 1 medicine: 1 alone
• Ciprofibrate 2 medicines: 2 alone
• Ciprofloxacin 24 medicines: 22 alone · 2 in combination
• Cisatracurium 8 medicines: 8 alone
• Cisplatin 3 medicines: 3 alone
• Citalopram 10 medicines: 10 alone
• Citric acid 12 medicines: 5 alone · 7 in combination
• Citric acid anhydrous 7 medicines: 1 alone · 6 in combination
• Citric acid monohydrate 4 medicines: 2 alone · 2 in combination
• Cladribine 5 medicines: 5 alone
• Clarithromycin 23 medicines: 23 alone
• Clascoterone 1 medicine: 1 alone
• Classical Swine Fever Virus (CSFV) -E2 subunit antigen 1 medicine: 1 alone
• Clavulanic acid 30 medicines: 30 in combination
• Clesrovimab 1 medicine: 1 alone
• Clindamycin 26 medicines: 24 alone · 2 in combination
• Clioquinol 7 medicines: 4 alone · 3 in combination
• Clobazam 28 medicines: 28 alone
• Clobetasol 13 medicines: 11 alone · 2 in combination
• Clobetasone 5 medicines: 4 alone · 1 in combination
• Clofarabine 7 medicines: 7 alone
• Clomethiazole 2 medicines: 2 alone
• Clomifene 2 medicines: 2 alone

Sources: the MHRA product information, the European Medicines Agency and the NHS Dictionary of Medicines and Devices (dm+d), NHS Business Services Authority.