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.

• Brigatinib 4 medicines: 4 alone
• Brimonidine 18 medicines: 9 alone · 9 in combination
• Brinzolamide 13 medicines: 4 alone · 9 in combination
• Brivaracetam 71 medicines: 71 alone
• Brodalumab 1 medicine: 1 alone
• Brolucizumab 3 medicines: 3 alone
• Bromfenac 2 medicines: 2 alone
• Bromocriptine 8 medicines: 8 alone
• Buclizine 1 medicine: 1 in combination
• Budesonide 77 medicines: 49 alone · 28 in combination
• Bulevirtide 1 medicine: 1 alone
• Bumetanide 7 medicines: 6 alone · 1 in combination
• Bupivacaine 25 medicines: 16 alone · 9 in combination
• Bupivacaine liposomal 2 medicines: 2 alone
• Buprenorphine 134 medicines: 117 alone · 17 in combination
• Bupropion 3 medicines: 2 alone · 1 in combination
• Burosumab 4 medicines: 4 alone
• Buserelin 3 medicines: 3 alone
• Buspirone 9 medicines: 9 alone
• Busulfan 6 medicines: 6 alone
• C1 ESTERASE INHIBITOR HUMAN 5 medicines: 5 alone
• C1 inhibitor (human) 1 medicine: 1 alone
• Cabazitaxel 11 medicines: 11 alone
• Cabergoline 10 medicines: 10 alone
• Cabotegavir sodium, Cabotegravir 1 medicine: 1 alone
• Cabotegravir 4 medicines: 4 alone
• Cabozantinib 8 medicines: 8 alone
• Cabozantinib (s)-malate 1 medicine: 1 alone
• Caffeine 55 medicines: 8 alone · 47 in combination
• Caffeine citrate 6 medicines: 6 alone
• Caffeine hydrate 1 medicine: 1 in combination
• Cajuput oil 5 medicines: 5 in combination
• Calamine 3 medicines: 3 in combination
• Calcifediol 2 medicines: 2 alone
• Calcipotriol 23 medicines: 6 alone · 17 in combination
• Calcitriol 6 medicines: 6 alone
• Calcium acetate 4 medicines: 3 alone · 1 in combination
• Calcium carbonate 70 medicines: 24 alone · 46 in combination
• Calcium chloride 9 medicines: 6 alone · 3 in combination
• Calcium chloride dihydrate 44 medicines: 10 alone · 34 in combination
• Calcium gluconate 4 medicines: 3 alone · 1 in combination
• Calcium glycerophosphate 1 medicine: 1 in combination
• Calcium lactate 2 medicines: 1 alone · 1 in combination
• Calcium lactate gluconate 1 medicine: 1 in combination
• Calcium levulinate 1 medicine: 1 in combination
• Calcium pantothenate 3 medicines: 3 in combination
• Calcium phosphate 1 medicine: 1 in combination
• Calcium polystyrene sulfonate 4 medicines: 4 alone
• Camellia sinensis extract 1 medicine: 1 alone
• Camphene 2 medicines: 2 in combination
• Camphor 4 medicines: 2 alone · 2 in combination
• Camphor oil rectified 1 medicine: 1 in combination
• Canagliflozin 7 medicines: 3 alone · 4 in combination
• Canakinumab 4 medicines: 4 alone
• Candesartan 31 medicines: 21 alone · 10 in combination
• Cangrelor 2 medicines: 2 alone
• Canine distemper virus, strain CDV Bio 11/A, canine adenovirus type 2, strain CAV-2 Bio 13, canine parvovirus type 2b, strain CPV-2b Bio 12/B and canine parainfluenza type 2 virus, strain CPiV-2 Bio 15 (all live attenuated) 1 medicine: 1 alone
• Canine distemper virus, strain CDV Bio 11/A, canine adenovirus type 2, strain CAV-2 Bio 13, canine parvovirus type 2b, strain CPV-2b Bio 12/B, canine parainfluenza type 2 virus, strain CPiV-2 Bio 15 (all live attenuated), Leptospira interrogans serogroup 2 medicines: 2 alone
• Canine herpesvirus (F205 strain) antigens 1 medicine: 1 alone
• Canine parainfluenza type-2 virus, strain CPiV-2 Bio 15 (live attenuated) 1 medicine: 1 alone
• Canine parainfluenza type 2 virus, strain CPiV-2 Bio 15 (live attenuated), Leptospira interrogans serogroup Australis serovar Bratislava, strain MSLB 1088, L. interrogans serogroup Icterohaemorrhagiae serovar Icterohaemorrhagiae, strain MSLB 1089, L. 1 medicine: 1 alone
• Canine parainfluenza virus, leptospira and rabies virus. 1 medicine: 1 alone
• Cannabidiol 3 medicines: 2 alone · 1 in combination
• Capecitabine 30 medicines: 30 alone
• Capivasertib 1 medicine: 1 alone
• Caplacizumab 1 medicine: 1 alone
• Capsaicin 2 medicines: 2 alone
• Capsicum 1 medicine: 1 in combination
• Capsicum oleoresin 6 medicines: 1 alone · 5 in combination
• Capsicum tincture 2 medicines: 1 alone · 1 in combination
• Captopril 13 medicines: 11 alone · 2 in combination
• Carbamazepine 39 medicines: 39 alone
• Carbetocin 3 medicines: 3 alone
• Carbidopa 67 medicines: 6 alone · 61 in combination
• Carbimazole 11 medicines: 11 alone
• Carbocisteine 19 medicines: 19 alone
• Carbomer 6 medicines: 6 alone
• Carbon dioxide 3 medicines: 2 alone · 1 in combination
• Carboplatin 5 medicines: 5 alone
• Carboprost 2 medicines: 2 alone
• Carfilzomib 6 medicines: 6 alone
• Carglumic acid 5 medicines: 5 alone
• Cariprazine 4 medicines: 4 alone
• Carmellose 5 medicines: 5 alone
• Carmustine 9 medicines: 9 alone
• Carvedilol 8 medicines: 8 alone
• casirivimab, imdevimab 1 medicine: 1 alone
• Caspofungin 14 medicines: 14 alone
• Castor oil 1 medicine: 1 in combination
• Catridecacog 1 medicine: 1 alone
• Catumaxomab 2 medicines: 2 alone
• Cedazuridine 1 medicine: 1 in combination
• Cefaclor 8 medicines: 8 alone
• Cefadroxil 1 medicine: 1 alone
• Cefalexin 24 medicines: 24 alone
• Cefazolin 2 medicines: 2 alone
• Cefepime 3 medicines: 2 alone · 1 in combination
• Cefiderocol 1 medicine: 1 alone
• Cefixime 2 medicines: 2 alone
• Cefotaxime 15 medicines: 15 alone

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