Home Page Formula: * The chemical name and formula for benfotiamine is: S-benzoylthiamine-O-monophosphate (C19H23N4O6PS) . Benfotiamin & benfothiamine are synonyms for benfotiamine, however "benfotiamine" is currently the most frequently used common name for this compound. View Benfotiamine Molecule	Vitamin B1 Also indexed as: Thiamin, Thiamine Drug Interactions Safety Check Certain medications interact with vitamin B1: Some interactions may increase the need for vitamin B1, other interactions may be negative and indicate vitamin B1 should not be taken without first speaking with your physician or pharmacist, others may require further explanation. Refer to the individual drug article for specific details about an interaction. Note: the following list only includes the generic or class name of a medication. Loop Diuretics (increase the need for vitamin B-1) Oral Contraceptives (increase the need for vitamin B-1) Stavudine (increases the need for vitamin B-1) Tricyclic Antidepressants (increase the need for vitamin B-1) Home Page