are there any semi-premium brands out there? not looking for anything very expensive but don't mind paying slightly more. I've had issues finding supplements with reasonable levels of the vitamin and without additives and toxins. the lowest percentage of zinc I saw was more than 300% the daily value which is too much. I bought the WF brand and later noticed it has 80mg of MSG but labeled as a glutamic acid. I don't need MSG with magnesium. I have the Solgar brand, which is great, but it contains titanium dioxide in the tablets. I prefer glass jars as they secure the supplements better by reducing spoilage from heat and light.