'Vikings' Season 4 Spoilers, News & Update: Ragnar Addicted to a Mysterious Herb

The upcoming episodes of "Vikings" season 4 will be filled with surprises, intrigues and twists. A new report suggests that one character will be addicted to an herb.

"Vikings" Season 4 features a broken king in Ragnar (Travis Fimmel). The lead star is disturbed since the Battle for Paris in "Vikings" Season 3. His spirit is crushed following Athelstan's murder by one of his closest friends Floki and he is drawing far from his family and kingdom.

In the last episode of "Vikings" Season 4, viewers saw Ragnar developing an addiction to an herb given to him by a slave named Yidu (Dianne Doan), Inquisitr reported. In the "Vikings" Season 4 Episode 5, Ragnar demanded Yidu to provide him the mysterious herb and he took time out from Kattegat to consume it with delight.

The report notes that the herb is unlikely to be opium, but it could be betel nuts. In "Vikings" Season 4 Episode 5, when Ragnar throws knives and a shield while Bjorn (Alexander Ludwig) and King Harald Finehair (Peter Franzen) approach, his mouth and saliva were tinted red, which were unlikely to happen if one took opium.

Also, when Yidu handed the herb to him, it was wrapped in a leaf. Betel is a nut, not a leaf, but often times it is wrapped in the leaf of the Piper betle vine.

On a separate note, one of the intriguing characters in "Viking" Season 4 is Yidu. Per MoviePilot, she claims to be a slave from Frankia. However, she lacks the skills to even handle a chicken, suggesting that she's from a noble family. Is she helping Ragnar for filling Athelstan place?

Unfortunately, there seems to be a contradiction because in "Vikings" past episodes Athelstan sharpened Ragnar's mind with encouraging words and valuable advices. Meanwhile, Yidu seems to be making him mad and dull.

Meanwhile, Christian Today reported that in the next episode of "Vikings" Season 4 Rollo would betray Ragnar to help Paris. Will Ragnar die in "Vikings" Season 4? Is Yidu an asset to him or another prey for his downfall? Watch "Vikings" Season 4 Episode 6 "What Might Have Been" on Mar. 24 at 9 p.m. ET on History Channel.