Got the same type call from this number today. Was called by a man identifying himself as Special Agent Kelvin Johnson with the Food and Drug Administration. Called four times and finally left a message. Claimed there was an ongoing investigation with a pharmaceutical company that I was involved with. I put the number into Google and it showed to be a scam. I reported it to the FBI anyway.
Please do not fall for this scam. Contact the DEA and give them the number. They even told me my Blood Pressure medicine was illegal and that Drugs.com was under investigation. They talk fast and try to scare the hell out of you to get your money. They transfer you around and when all is said and done they let you off with a warning and asked me to send $4000 from a specific address. I looked it up on Google Maps and it was an ACE Check Cashing Center. Do you really think the FDA/DEA would fine you and have you send 4000. When i said i didnt have 4000 they immediately cut the fine in half. Scumbags!! Don't fall for it..