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Bepridil
go.drugbank.com/drugs/DB01244ApprovedWithdrawnIt has antihypertensive and selective anti-arrhythmia activities and acts as a calmodulin antagonist. … It is no longer marketed in the United States, as it has been implicated in causing ventricular arrhythmias (ie. Torsade de pointes).
Rifabutin
go.drugbank.com/drugs/DB00615ApprovedInvestigationalA broad-spectrum antibiotic that is being used as prophylaxis against disseminated Mycobacterium avium complex infection in HIV-positive patients.
Gastric intrinsic factor
go.drugbank.com/drugs/DB09349ApprovedIntrinsic factor (IF), also known as gastric intrinsic factor (GIF), is a glycoprotein produced by the parietal cells of the stomach that is necessary for the absorption of vitamin B12 (cobalamin) later
Insulin icodec
go.drugbank.com/drugs/DB16693ApprovedInvestigational[L51078]The US FDA subsequently approved insulin icodec in March 2026 for use as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus. [L56102] … [L51078] In July 2024, the US FDA rejected the approval of insulin icodec, citing concerns regarding hypoglycemia and the indication being sought for type 1 diabetes mellitus.
Tetrodotoxin
go.drugbank.com/drugs/DB05232InvestigationalTetrodotoxin is being investigated by Wex Pharmaceuticals for the treatment of chronic and breakthrough pain in advanced cancer patients as well as for the treatment of opioid dependence.
Colloidal oatmeal
go.drugbank.com/drugs/DB11286ApprovedNutraceuticalPhenols are also contained in colloidal oatmeal, which possess antioxidant and anti-inflammatory activities, as well as UV-absorbing activity. … It is available in topical products as a skin soothing agent.
Starch, corn
go.drugbank.com/drugs/DB11599ApprovedInvestigationalNutraceuticalCorn starch may be added in some food products as a thickening agent or anti-caking agent, and is sometimes found in topical drugs as a skin protectant. … Corn starch refers to the starch extracted from the corn grain that is commonly used as a food ingredient and chemical additive.
Gramicidin D
go.drugbank.com/drugs/DB00027ApprovedInvestigationalActive against most Gram-positive bacteria and some Gram-negative organisms, Gramicidin D is used primarily as a topical antibiotic and is also found in Polysporin ophthalmic solution.
Oxolamine
go.drugbank.com/drugs/DB13216ApprovedOxolamine is not approved in the USA, it may be marketed elsewhere internationally as a cough suppressant [L5416]. It is listed as a prescription drug in New Zealand legislation [L5419].
Sulfadoxine
go.drugbank.com/drugs/DB01299ApprovedInvestigationalWithdrawnA long acting sulfonamide that is used, usually in combination with other drugs, for respiratory, urinary tract, and malarial infections.