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.

• Treprostinil 14 medicines: 14 alone
• Tretinoin 3 medicines: 1 alone · 2 in combination
• Triamcinolone 1 medicine: 1 in combination
• Triamcinolone acetonide 7 medicines: 7 alone
• Triamcinolone hexacetonide 1 medicine: 1 alone
• Triamterene 2 medicines: 1 alone · 1 in combination
• Triclosan 4 medicines: 1 alone · 3 in combination
• Trientine 6 medicines: 6 alone
• Trientine tetrahydrochloride 1 medicine: 1 alone
• Trifarotene 1 medicine: 1 alone
• Trifluoperazine 14 medicines: 14 alone
• Trifluridine 3 medicines: 3 in combination
• Trihexyphenidyl 10 medicines: 10 alone
• Trimethoprim 24 medicines: 16 alone · 8 in combination
• Trimipramine 14 medicines: 14 alone
• Triprolidine hydrochloride 2 medicines: 2 in combination
• Triptorelin 6 medicines: 6 alone
• Tropicamide 5 medicines: 3 alone · 2 in combination
• Trospium 5 medicines: 5 alone
• Tryptophan 15 medicines: 2 alone · 13 in combination
• Tuberculosis vaccine 1 medicine: 1 alone
• Tucatinib 2 medicines: 2 alone
• Tulathromycin 7 medicines: 7 alone
• Turkey herpes virus, strain rHVT/ND/IBD, expressing the fusion protein of Newcastle disease virus and the VP2 protein of infectious bursal disease virus, live recombinant 1 medicine: 1 alone
• Turoctocog alfa 6 medicines: 6 alone
• Turoctocog alfa pegol 5 medicines: 5 alone
• Turpentine oil 3 medicines: 3 in combination
• Tylvalosin 1 medicine: 1 alone
• Typhoid vaccine 1 medicine: 1 alone
• Tyrosine 14 medicines: 14 in combination
• Ulipristal 11 medicines: 11 alone
• Umeclidinium bromide 7 medicines: 3 alone · 4 in combination
• Umeclidinium bromide, vilanterol trifenatate 1 medicine: 1 alone
• Undecenoic acid 3 medicines: 3 in combination
• Upadacitinib 3 medicines: 3 alone
• Urea 9 medicines: 3 alone · 6 in combination
• Urea [13-C] 1 medicine: 1 alone
• Urea (13C) 2 medicines: 2 alone
• Urea hydrogen peroxide 1 medicine: 1 alone
• Urofollitropin 6 medicines: 6 alone
• Urokinase 8 medicines: 8 alone
• Ursodeoxycholic acid 22 medicines: 22 alone
• Ustekinumab 18 medicines: 18 alone
• Vaborbactam 1 medicine: 1 in combination
• Vaccine against coccidiosis in chickens 1 medicine: 1 alone
• Vadadustat 3 medicines: 3 alone
• Valaciclovir 7 medicines: 7 alone
• Valerian 2 medicines: 1 alone · 1 in combination
• Valerian extract 2 medicines: 1 alone · 1 in combination
• Valerian root extract 2 medicines: 1 alone · 1 in combination
• Valganciclovir 3 medicines: 3 alone
• Valine 8 medicines: 8 in combination
• Valnemulin 1 medicine: 1 alone
• Valproic acid 15 medicines: 10 alone · 5 in combination
• Valsartan 67 medicines: 20 alone · 47 in combination
• Vancomycin 11 medicines: 11 alone
• Vandetanib 3 medicines: 3 alone
• Vanzacaftor 2 medicines: 2 in combination
• Vardenafil 30 medicines: 30 alone
• Varenicline 17 medicines: 17 alone
• Varicella vaccine 1 medicine: 1 alone
• Varicella-zoster virus (live, attenuated) 1 medicine: 1 alone
• Vcp 2242 virus / Vcp1529 virus / Vcp1533 virus / vCP3011 virus 1 medicine: 1 alone
• vCP1338 virus 1 medicine: 1 alone
• vCP65 virus 1 medicine: 1 alone
• Vecuronium 4 medicines: 4 alone
• Vedaprofen 1 medicine: 1 alone
• Vedolizumab 3 medicines: 3 alone
• Velaglucerase alfa 2 medicines: 2 alone
• Velmanase alfa 1 medicine: 1 alone
• Velpatasvir 4 medicines: 4 in combination
• Vemurafenib 1 medicine: 1 alone
• Venetoclax 3 medicines: 3 alone
• Venlafaxine 87 medicines: 87 alone
• Verapamil 27 medicines: 27 alone
• Vericiguat 3 medicines: 3 alone
• Vernakalant 2 medicines: 2 alone
• Verteporfin 1 medicine: 1 alone
• Vestronidase alfa 2 medicines: 2 alone
• Vibegron 1 medicine: 1 alone
• Vibrio cholerae, strain cvd 103-hgr, live 1 medicine: 1 alone
• Vigabatrin 7 medicines: 7 alone
• Vilanterol 6 medicines: 6 in combination
• Vildagliptin 18 medicines: 7 alone · 11 in combination
• Vinblastine 1 medicine: 1 alone
• Vincristine 2 medicines: 2 alone
• Vindesine 1 medicine: 1 alone
• Vinflunine 1 medicine: 1 alone
• Vinorelbine 13 medicines: 13 alone
• virus, live attenuated, measles, virus, live attenuated, mumps, virus, live attenuated, rubella, virus, live attenuated, varicella 1 medicine: 1 alone
• Vismodegib 1 medicine: 1 alone
• Vitamin A 6 medicines: 6 in combination
• Vitamin A palmitate 1 medicine: 1 in combination
• Voclosporin 1 medicine: 1 alone
• Volanesorsen 1 medicine: 1 alone
• von Willebrand factor 12 medicines: 3 alone · 9 in combination
• Vonicog alfa 2 medicines: 2 alone
• Vorapaxar sulfate 1 medicine: 1 alone
• Vorasidenib 2 medicines: 2 alone
• Voretigene neparvovec 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.