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.
- Rabeprazole 6 medicines: 6 alone
- Rabies vaccine 1 medicine: 1 alone
- Racecadotril 5 medicines: 5 alone
- Racemic camphor 11 medicines: 11 in combination
- Radium (223Ra) dichloride 1 medicine: 1 alone
- Radium [Ra-223] dichloride 1 medicine: 1 alone
- Raloxifene 7 medicines: 7 alone
- Raltegravir 8 medicines: 7 alone · 1 in combination
- Raltitrexed 1 medicine: 1 alone
- Ramipril 31 medicines: 29 alone · 2 in combination
- Ramucirumab 1 medicine: 1 alone
- Ranibizumab 12 medicines: 12 alone
- Ranitidine 11 medicines: 11 alone
- Ranolazine 44 medicines: 44 alone
- Rasagiline 15 medicines: 15 alone
- Rasburicase 1 medicine: 1 alone
- Raspberry juice concentrated 2 medicines: 2 in combination
- Ravulizumab 3 medicines: 3 alone
- Reassortant influenza virus (live attenuated) of the following strain: A/Vietnam/1203/2004 (H5N1) strain 1 medicine: 1 alone
- Reassortant influenza virus (live attenuated) of the following strains:A/California/7/2009 (H1N1)pdm09 like strain, A/Victoria/361/2011 (H3N2) like strain, B/Massachusetts/2/2012 like strain 1 medicine: 1 alone
- Reboxetine 3 medicines: 3 alone
- Recombinant Adenovirus type 26 (Ad26) encoding the glycoprotein (GP) of the Ebola virus Zaire (ZEBOV) Mayinga strain 1 medicine: 1 alone
- Recombinant cholera toxin B subunit, vibrio cholerae 01 1 medicine: 1 alone
- Recombinant fowlpox virus expressing the membrane fusion protein and the encapsidation protein of avian infectious laryngotracheitis virus, live 1 medicine: 1 alone
- Recombinant human C1-inhibitor 1 medicine: 1 alone
- Recombinant human n-acetylgalactosamine-6-sulfatase 1 medicine: 1 alone
- Recombinant human nerve growth factor 1 medicine: 1 alone
- Recombinant inactivated avian influenza virus 1 medicine: 1 alone
- Recombinant Modified Vaccinia Ankara Bavarian Nordic Virus encoding the: Ebola virus Zaire (ZEBOV) Mayinga strain glycoprotein (GP) 1 medicine: 1 in combination
- Recombinant omega interferon of feline origin 1 medicine: 1 alone
- Recombinant protein Q from Leishmania infantum MON-1 1 medicine: 1 alone
- Recombinant salmon calcitonin 1 medicine: 1 alone
- Recombinant Streptococcus equi protein CCE, Recombinant Streptococcus equi protein Eq85, Recombinant Streptococcus equi protein IdeE 1 medicine: 1 alone
- Recombinant turkey herpesvirus, strain vhvt013-69, live 1 medicine: 1 alone
- Recombinant varicella zoster virus glycoprotein E 1 medicine: 1 alone
- Recombinant Verotoxin 2e of E. coli 1 medicine: 1 alone
- Recombinant vesicular stomatitis virus (strain indiana) with a deletion of the envelope glycoprotein, replaced with the zaire ebolavirus (strain kikwit 1995) surface glycoprotein 1 medicine: 1 alone
- Regadenoson 1 medicine: 1 alone
- Regdanvimab 1 medicine: 1 alone
- Regorafenib 1 medicine: 1 alone
- Relebactam 2 medicines: 2 in combination
- Relugolix 2 medicines: 1 alone · 1 in combination
- Remdesivir 2 medicines: 2 alone
- Remibrutinib 1 medicine: 1 alone
- Remifentanil 13 medicines: 13 alone
- Remimazolam 3 medicines: 3 alone
- Repaglinide 23 medicines: 23 alone
- Reslizumab 1 medicine: 1 alone
- Resmetirom 3 medicines: 3 alone
- Resocortol butyrate 1 medicine: 1 alone
- Respiratory Syncytial Virus (RSV) vaccine 2 medicines: 2 alone
- Retapamulin 1 medicine: 1 alone
- Reteplase 1 medicine: 1 alone
- Retigabine 1 medicine: 1 alone
- Retinol 1 medicine: 1 in combination
- Retinol + Colecalciferol 1 medicine: 1 alone
- Retinol palmitate 2 medicines: 2 in combination
- Rezafungin 1 medicine: 1 alone
- Rhubarb 1 medicine: 1 in combination
- Rhubarb extract 2 medicines: 2 in combination
- Ribavirin 9 medicines: 9 alone
- Ribociclib 1 medicine: 1 alone
- Riboflavin 12 medicines: 12 in combination
- Riboflavin sodium phosphate 5 medicines: 5 in combination
- Rice powder pre-cooked 1 medicine: 1 in combination
- Rifabutin 1 medicine: 1 alone
- Rifampicin 16 medicines: 11 alone · 5 in combination
- Rifaximin 4 medicines: 4 alone
- Rilonacept 1 medicine: 1 alone
- Rilpivirine 11 medicines: 6 alone · 5 in combination
- Riluzole 9 medicines: 9 alone
- Rimegepant 1 medicine: 1 alone
- Rimonabant 2 medicines: 2 alone
- Riociguat 6 medicines: 6 alone
- Ripretinib 1 medicine: 1 alone
- Risankizumab 9 medicines: 9 alone
- Risdiplam 2 medicines: 2 alone
- Risedronate sodium 9 medicines: 9 alone
- Risperidone 41 medicines: 41 alone
- Ritlecitinib 1 medicine: 1 alone
- Ritonavir 12 medicines: 6 alone · 6 in combination
- Rituximab 17 medicines: 17 alone
- Rivaroxaban 83 medicines: 83 alone
- Rivastigmine 82 medicines: 82 alone
- Rizatriptan 16 medicines: 16 alone
- Robenacoxib 1 medicine: 1 alone
- Rocuronium 3 medicines: 3 alone
- Roflumilast 6 medicines: 6 alone
- Rolapitant 1 medicine: 1 alone
- Romiplostim 4 medicines: 4 alone
- Romosozumab 2 medicines: 2 alone
- Ropeginterferon alfa-2b 4 medicines: 4 alone
- Ropinirole 56 medicines: 56 alone
- Ropivacaine 16 medicines: 16 alone
- Rosiglitazone 3 medicines: 1 alone · 2 in combination
- Rosuvastatin 58 medicines: 58 alone
- Rotavirus serotype G1, serotype G2, serotype G3, serotype G4, serotype P1 1 medicine: 1 alone
- Rotigotine 20 medicines: 20 alone
- Roxadustat 5 medicines: 5 alone
- Rozanolixizumab 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.