| Vosevi and/or Equivalents | Vosevi | 
| Vytorin and/or Equivalents | Vytorin, Inegy, Zimybe | 
| Welchol and/or Equivalents | Cholestagel, Lodalis | 
| Wellbutrin SR and/or Equivalents | Bupropion SR, Sandoz Bupropion SR | 
| Wellbutrin SR / Zyban and/or Equivalents | Bupropion SR, Sandoz Bupropion SR, Wellbutrin SR, Zyban | 
| Wellbutrin XL and/or Equivalents | Bupropion XL, Wellbutrin XL, Mylan-Bupropion XL | 
| Westcort Cream and/or Equivalents | Hydrocortisone Valerate Cream | 
| Westcort Ointment and/or Equivalents | Hydrocortisone Valerate Ointment | 
| X3 Hand Sanitizer and/or Equivalents | X3 Hand Sanitizer | 
| Xadago and/or Equivalents | Xadago | 
| Xalacom and/or Equivalents | Act - Latanoprost/Timolol, Latanoprost/Timolol Ophthalmic Solution, Xalacom Ophthalmic Solution | 
| Xalatan and/or Equivalents | Act-Latanoprost Ophthalmic Solution, Latanoprost, Monopost Eye Drop Solution, Sdz-Latanoprost Ophthalmic Solution, Xalatan | 
| Xalkori and/or Equivalents | Xalkori | 
| Xarelto and/or Equivalents | Xarelto | 
| Xeljanz and/or Equivalents | Xeljanz | 
| Xeloda and/or Equivalents | Capecitabine, Teva-Capecitabine, Xeloda | 
| Xenazine and/or Equivalents | Apo-Tetrabenazine, Nitoman, Tetrabenazine | 
| Xenical and/or Equivalents | Orlistat, Xenical | 
| Xerese Cream and/or Equivalents | Xerese Cream | 
| Xerotin Artificial Saliva and/or Equivalents | Xerotin Artificial Saliva | 
| Xibrom/ Bromday and/or Equivalents | Yellox | 
| Xifaxan and/or Equivalents | Xifaxanta, Xifaxanta F/C, Xifaxan, Zaxine | 
| Xigduo 5/1000mg and/or Equivalents | Xigduo, Xigduo 5/1000mg, Xigduo 5/1000mg | 
| Xigduo 5/850mg and/or Equivalents | Xigduo, Xigduo 5/850mg | 
| Xigduo XR and/or Equivalents | Xigduo XR |