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.

• B/Phuket/3073/2013-like strain (B/Singapore/INFTT-16-0610/2016, wild type) 2 medicines: 2 alone
• B/Washington/02/2019-like strain (B/Darwin/7/2019, wild type) 1 medicine: 1 alone
• Babesia canis, inactivated, babesia rossi, inactivated 1 medicine: 1 alone
• Baclofen 31 medicines: 31 alone
• Baloxavir marboxil 4 medicines: 4 alone
• Balsalazide 1 medicine: 1 alone
• Balsamic acids 1 medicine: 1 alone
• Bambuterol 2 medicines: 2 alone
• Baricitinib 3 medicines: 3 alone
• Barium 5 medicines: 5 alone
• Basiliximab 4 medicines: 4 alone
• Bazedoxifene 2 medicines: 1 alone · 1 in combination
• Becaplermin 1 medicine: 1 alone
• Beclometasone 64 medicines: 46 alone · 18 in combination
• Beclometasone dipropionate, formoterol fumarate dihydrate, glycopyrronium 1 medicine: 1 alone
• Bedaquiline 1 medicine: 1 alone
• Bedinvetmab 1 medicine: 1 alone
• Belantamab mafodotin 2 medicines: 2 alone
• Belatacept 1 medicine: 1 alone
• Belimumab 5 medicines: 5 alone
• Belladonna 1 medicine: 1 alone
• Belumosudil 1 medicine: 1 alone
• Bemiparin 3 medicines: 3 alone
• Bempedoic acid 2 medicines: 1 alone · 1 in combination
• Benazepril hydrochloride, pimobendan 1 medicine: 1 alone
• Benazepril hydrochloride, spironolactone 1 medicine: 1 alone
• Bendamustine 6 medicines: 6 alone
• Bendroflumethiazide 11 medicines: 9 alone · 2 in combination
• Benperidol 1 medicine: 1 alone
• Benralizumab 2 medicines: 2 alone
• Benserazide hydrochloride 9 medicines: 9 in combination
• Benzalkonium 6 medicines: 6 in combination
• Benzalkonium chloride 14 medicines: 5 alone · 9 in combination
• Benzocaine 19 medicines: 16 alone · 3 in combination
• Benzoic acid 1 medicine: 1 in combination
• Benzoin sumatra 1 medicine: 1 in combination
• Benzoin tincture 1 medicine: 1 in combination
• Benzoyl peroxide 38 medicines: 25 alone · 13 in combination
• Benzydamine 19 medicines: 19 alone
• Benzyl alcohol 3 medicines: 3 in combination
• Benzyl benzoate 7 medicines: 7 in combination
• Benzyl cinnamate 1 medicine: 1 in combination
• Benzyl nicotinate 1 medicine: 1 in combination
• Benzylpenicillin 5 medicines: 5 alone
• Beractant 1 medicine: 1 alone
• Berotralstat 2 medicines: 2 alone
• Besilesomab 2 medicines: 2 alone
• Betahistine 15 medicines: 15 alone
• Betaine 2 medicines: 2 alone
• Betamethasone 64 medicines: 36 alone · 28 in combination
• Betamethasone acetate, terbinafine, florfenicol 1 medicine: 1 alone
• Betaxolol 4 medicines: 4 alone
• Bethanechol 2 medicines: 2 alone
• Betiatide 2 medicines: 2 alone
• Betulae cortex 1 medicine: 1 alone
• Bevacizumab 15 medicines: 15 alone
• Bevacizumab gamma 1 medicine: 1 alone
• Bexarotene 2 medicines: 2 alone
• Bezafibrate 10 medicines: 10 alone
• Bezlotoxumab 2 medicines: 2 alone
• Bicalutamide 7 medicines: 7 alone
• Bictegravir 2 medicines: 2 in combination
• bictegravir, emtricitabine, tenofovir alafenamide, fumarate 1 medicine: 1 alone
• Bifonazole 1 medicine: 1 alone
• Bilastine 4 medicines: 4 alone
• Bimatoprost 32 medicines: 21 alone · 11 in combination
• Bimekizumab 4 medicines: 4 alone
• Binimetinib 2 medicines: 2 alone
• Biotin 4 medicines: 4 in combination
• Bisacodyl 18 medicines: 18 alone
• Bismuth oxide 9 medicines: 9 in combination
• Bismuth subcitrate potassium 2 medicines: 2 in combination
• Bismuth subgallate 7 medicines: 7 in combination
• Bismuth subnitrate 2 medicines: 2 in combination
• Bismuth subsalicylate 3 medicines: 3 alone
• Bisoprolol 40 medicines: 40 alone
• Bivalirudin 2 medicines: 2 alone
• Bleomycin 3 medicines: 3 alone
• Blinatumomab 2 medicines: 2 alone
• Bluetongue-virus serotype-1 antigen 1 medicine: 1 alone
• Bluetongue-virus serotype-1 antigen, bluetongue virus serotype 8 antigen 1 medicine: 1 alone
• Bluetongue-virus serotype-2 antigen, bluetongue-virus serotype-4 antigen 1 medicine: 1 alone
• Bluetongue virus serotype 8 antigen 1 medicine: 1 alone
• Bluetongue virus vaccine, serotype 8 (inactivated) 2 medicines: 2 alone
• Bluetongue virus vaccine serotypes 1 or 4 or 8 [inactivated] 1 medicine: 1 alone
• Boceprevir 1 medicine: 1 alone
• Boneset liquid extract 1 medicine: 1 in combination
• Borneol 2 medicines: 2 in combination
• Bortezomib 34 medicines: 34 alone
• Bosentan 13 medicines: 13 alone
• Bosutinib 12 medicines: 12 alone
• Botulinum A toxin 13 medicines: 13 alone
• Botulinum B toxin 1 medicine: 1 alone
• Botulinum toxin type A 2 medicines: 2 alone
• Botulinum toxin type B 1 medicine: 1 alone
• Bovine concentrated lactoserum containing specific immunoglobulins G against E. coli F5 (K99) adhesin 1 medicine: 1 alone
• Brensocatib 1 medicine: 1 alone
• Brentuximab vedotin 1 medicine: 1 alone
• Brexpiprazole 7 medicines: 7 alone
• Brexucabtagene autoleucel 1 medicine: 1 alone

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