To someone curious about CBD oil, the offer might sound intriguing.

The ads on social media or in online searches say you can get a free trial sample of CBD, which is found in hemp and marijuana. (CBD doesn’t get people high, but proponents say it can make you feel better.) You just pay a few bucks for shipping and handling.

Careful, consumer advocates warn. It could be the latest scam that’s already netted some victims large and unexpected charges on their credit cards.

“Told me of a free product trial. Just need to pay for shipping of $10,” one victim recently wrote to the Better Business Bureau’s Scam Tracker, where consumers can report and research scams. “The company has been withdrawing money from my account” — for a total of $200, the report said.

“They don’t tell you how now every month they will collect $70 from your credit card,” wrote another.

“Shadiest company I’ve seen in a LONG time!” wrote another.

Here’s how it…

Read more…