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.
- Sodium thiosulfate 3 medicines: 3 alone
- Sodium valproate 45 medicines: 40 alone · 5 in combination
- Sodium zirconium cyclosilicate 2 medicines: 2 alone
- Sofosbuvir 13 medicines: 5 alone · 8 in combination
- Sofosbuvir, velpatasvir, voxilaprevi 1 medicine: 1 alone
- Solifenacin 30 medicines: 25 alone · 5 in combination
- Solriamfetol 2 medicines: 2 alone
- Somapacitan 2 medicines: 2 alone
- Somatorelin 1 medicine: 1 alone
- Somatrogon 3 medicines: 3 alone
- Somatropin 36 medicines: 36 alone
- Sonidegib diphosphate 1 medicine: 1 alone
- Sorafenib 7 medicines: 7 alone
- Sotagliflozin 2 medicines: 2 alone
- Sotalol 10 medicines: 10 alone
- Sotatercept 4 medicines: 4 alone
- Sotorasib 2 medicines: 2 alone
- Sotrovimab 2 medicines: 2 alone
- Soya oil 12 medicines: 3 alone · 9 in combination
- Spesolimab 3 medicines: 3 alone
- Spheroids of human autologous matrix-associated chondrocytes 1 medicine: 1 alone
- Spinosad 1 medicine: 1 alone
- spinosad, milbemycin oxime 1 medicine: 1 alone
- Spironolactone 22 medicines: 21 alone · 1 in combination
- Split influenza virus, inactivated, containing antigen*: A/California/7/2009 (H1N1)v like strain (X-179A)*propagated in eggs. 2 medicines: 2 alone
- Split influenza virus, inactivated, containing antigen: A/VietNam/1194/2004 (H5N1) like strain used (NIBRG-14) 2 medicines: 2 alone
- Split influenza virus inactivated, containing antigen equivalent to A/California/07/2009 (H1N1)-derived strain used NYMC X-179A 1 medicine: 1 alone
- Squill 1 medicine: 1 in combination
- Squill tincture 1 medicine: 1 in combination
- St. John's wort 3 medicines: 3 alone
- Stavudine 1 medicine: 1 alone
- Sterculia 1 medicine: 1 alone
- Stiripentol 8 medicines: 8 alone
- Storax prepared 1 medicine: 1 in combination
- Streptozocin 1 medicine: 1 alone
- Strontium ranelate 3 medicines: 3 alone
- Succimer 1 medicine: 1 alone
- Sucralfate 1 medicine: 1 alone
- Sucroferric oxyhydroxide 3 medicines: 3 alone
- Sucrose 2 medicines: 2 in combination
- Sufentanil 4 medicines: 4 alone
- Sugammadex 11 medicines: 11 alone
- Sulesomab 1 medicine: 1 alone
- Sulfadiazine 1 medicine: 1 alone
- Sulfadiazine silver 1 medicine: 1 alone
- Sulfamethoxazole 11 medicines: 3 alone · 8 in combination
- Sulfasalazine 9 medicines: 9 alone
- Sulfur 2 medicines: 1 alone · 1 in combination
- Sulfur hexafluoride 1 medicine: 1 alone
- Sulfur precipitated 1 medicine: 1 in combination
- Sulindac 3 medicines: 3 alone
- Sulphur hexafluoride 1 medicine: 1 alone
- Sulpiride 8 medicines: 8 alone
- Sultiame 1 medicine: 1 alone
- Sumatriptan 44 medicines: 43 alone · 1 in combination
- Sunitinib 37 medicines: 37 alone
- Susoctocog alfa 2 medicines: 2 alone
- Suxamethonium 5 medicines: 5 alone
- Sweet birch oil 1 medicine: 1 in combination
- Synthetic peptide analogue of gonadotropin-releasing factor conjugated to dipthheria toxoid 1 medicine: 1 alone
- Syrup 7 medicines: 7 in combination
- Tacalcitol 2 medicines: 2 alone
- Tacrolimus 45 medicines: 45 alone
- Tadalafil 51 medicines: 51 alone
- Tafamidis 4 medicines: 4 alone
- Tafasitamab 1 medicine: 1 alone
- Tafluprost 6 medicines: 4 alone · 2 in combination
- Tagraxofusp 1 medicine: 1 alone
- Talazoparib 5 medicines: 5 alone
- Talimogene laherparepvec 3 medicines: 3 alone
- Talquetamab 1 medicine: 1 alone
- Tamoxifen 17 medicines: 17 alone
- Tamsulosin 33 medicines: 26 alone · 7 in combination
- Tannic acid 1 medicine: 1 in combination
- Tapentadol 64 medicines: 64 alone
- Tarlatamab 1 medicine: 1 alone
- Tasimelteon 1 medicine: 1 alone
- Tasipimidine sulfate 1 medicine: 1 alone
- Tasonermin 1 medicine: 1 alone
- Taurine 5 medicines: 5 in combination
- Tazarotene 2 medicines: 2 alone
- Tazobactam 9 medicines: 1 alone · 8 in combination
- Tebentafusp 1 medicine: 1 alone
- Teclistamab 2 medicines: 2 alone
- Tecovirimat 1 medicine: 1 alone
- Tedizolid 2 medicines: 2 alone
- Teduglutide 3 medicines: 3 alone
- Tegafur 1 medicine: 1 in combination
- Teicoplanin 13 medicines: 13 alone
- Telaprevir 1 medicine: 1 alone
- Telavancin 1 medicine: 1 alone
- Telbivudine 1 medicine: 1 alone
- Telithromycin 2 medicines: 2 alone
- Telmisartan 57 medicines: 30 alone · 27 in combination
- Telotristat ethyl 1 medicine: 1 alone
- Telotristat etiprate 1 medicine: 1 alone
- Temazepam 5 medicines: 5 alone
- Temocillin 2 medicines: 2 alone
- Temoporfin 1 medicine: 1 alone
- Temozolomide 48 medicines: 48 alone
Sources: the MHRA product information, the European Medicines Agency and the NHS Dictionary of Medicines and Devices (dm+d), NHS Business Services Authority.