How to import a .tsv file
This should do it:
read.table(file = 'drug_info.tsv', sep = '\t', header = TRUE)
Using fread from the package data.table will read the data and will skip the error you are getting using read.table.
require(data.table)data<-as.data.frame(fread("drug_info.tsv"))
You can treat the data like a csv, and specify tab delimination.
read.csv("drug_info.tsv", sep = "\t")