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Im just curious because someone gave me a BUNCH of those gallon jugs of iron, potassium, etc etc and I just started to use them. They were already opened and used previously and I had them sitting around for a while. Just want to make sure I can still use them.
The one Im mostly worried about is the potassium because it sounds like some of it solidified like there are small rocks in the jug.

Thanks

been meaning to ask this but keep forgetting.
Look around on the bottle and see if there is any expiration date on it...but I do believe you should be fine
 
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