Macbeth's state of mind

Left handside of the image at the bottom we can see a bottle looks like a medicine however it is excluded from the scene where Macbeth sees Banquo’s ghost. At first i thought this is the painter’s own interpretation of Shakespeare. The interesting thing when i googled the label on the bottle, found that it is actually a commercial of a meat company. I will add a link incase you might wanna take a look at the product itself. 

If we don’t look at the advertising, the image is sufficent to present the situation yet not the best.  Macbeth’s fear and others’ curiosity and worries can be observed well but the ghost itself not much like Banquo. When i look to the ghost, it reminds me Jesus actually because of all halo around him. However in the scene we know that Banquo’s ghost should be more scary  since he were not a saint, he should’nt have been pictured as white i believe. The figure of Lady Macbeth also is not successfully presented because i believe her actions should be exaggerated. Lady Macbeth is the one who tries to save Macbeth by telling the guests they should not engage with Macbeth. In a situation like this, people tend to overreact in terms of gestures. Lady Macbeth, however feels like she is calmer than the usual. 

The whole idea of Macbeth is the one that sees the ghost represents the moral health of the Macbeth and the others as well. Since he scares to be death and wishes to be dead like Duncan and Banquo, we can question his sanity.

https://en.wikipedia.org/wiki/Liebig%27s_Extract_of_Meat_Company