Confusing label information (zinc) - a common problem?

The label on my zinc can says 60mg zinc orotate. As some of us know, the recommended dosage per day is far less. But one guy wrote this comment about the product:

I don't think these work as well as albion chelated zinc glycinate. Also the label is not clear - it is 60mg zinc orotate - not 60mg elemental zinc. If my calculations are right, each tablet only contains 9mg elemental zinc. I do like this brand for the other minerals, but I wish they would label their products correctly - it is incredibly misleading to customers (similarly for the other minerals - the lithium is only 4.9mg Li, the magnesium 31mg Mg and the Calcium around 50mg Ca per tablet).

The label says two tablets per day, which means a total of 120mg of zinc every day, which if course is too bloody high, but if the commentator above is correct, two tablets would rather give 18mg of daily zinc, not 120mg.

How do you calculate the real amount of zinc?? What is elemental zinc?? Is misleading information like this common on supplement labels??

It might be misleading, depending on which figure you want: zinc (elemental zinc) or zinc orotate.
Zinc orotate is the zinc-salt of orotic acid; while elemental zinc means (pure) zinc.
Thus zinc orotate does not mean elemental zinc.
Zinc-orotate has the chemical formula C10H6N4O8Zn and a molecular weight of 375.585640 g/mol.
Zinc on the other hand has a weight of 65.382 g/mol.
The term "mol" is a fixed number of particles.
From both mol numbers one can derive a ratio, which is the percentage of zinc in zinc-orotate
(approx. 65/375 = 0.17, means 17% elemental zinc in zinc-orotate; so around 10mg zinc in 60mg zinc orotate).
Usually the formulas are not water-free, so on a ''as is'' basis, there might be a little bit less
elemental metal than evident form the plain chemical formula.

Wooow, I admire your deep knowledge!

So I could easily pop two of 'em tablets without overdose risk?

Would you say that orotate is a suitable form of zinc, or should one opt for "clean" elemental zinc?

Orotates are perfectly fine. And also a low content it safe and economic; large quantities in one go
are only a big waste.
All better metal supplements come in the form of salts or chelates.
Because these are more stable and/or better absorbed. And also, to my knowledge, no one
sells "pure" metal supplements.