| Warfarin | Warfarin is an anticoagulant | 
| Xantinol Nicotinate | Xantinol nicotinate (or xanthinol niacinate) is a vasodilator | 
| Xipamide | Xipamide is a sulfonamide diuretic drug | 
| Xylometazoline Hydrochloride | Xylometazoline is a direct-acting sympathomimetic | 
| Zaleplon | Zaleplon is a sedative/hypnotic, mainly used for insomnia. | 
| Ziprasidone | Ziprasidone is an atypical antipsychotic | 
| Zidovudine | Zidovudine is a nucleoside analog reverse transcriptase inhibitor (NRTI), a type of antiretroviral drug | 
| Zinc Oxide | Zinc oxide is used to treat minor skin irritations | 
| Zoledronic Acid | Zoledronic acid is a bisphosphonate | 
| Zolpidem | Zolpidem is a prescription medication used for the short-term treatment of insomnia, as well as some brain disorders | 
| Zonisamide | Zonisamide is a sulfonamide anticonvulsant | 
| Zopiclone | Zopiclone is a non-benzodiazepine hypnotic agent used in the treatment of insomnia | 
| Zuclopenthixol | Zuclopenthixol is a typical antipsychotic neuroleptic drug of the thioxanthene group | 
| Zanamivir | Zanamivir an antiviral drug | 
| Zotepine | Zotepine, an atypical anti-psychotic drug | 
| Zaltoprofen | Zaltoprofen is a NSAID | 
| Zinc + Vitamin C | Zinc + Vitamin C is prescribed as an antioxidant and to boost the immune system | 
| Zinc sulfate | Zinc sulfate is indicated for the treatment and/or prevention of zinc deficiency related to alcoholism, liver cirrhosis and bowel malabsorption | 
| Zinc | Zinc supplements are used for the treatment of zinc deficiency, severe diarrhoea, liver cirrhosis, alcoholism and Wilson’s disease. |