Bests & Worsts Reviews from Amazon

Purchased on the strength of the positive vs negative reviews. Have only been taking a few days now, but I noted that almost immediately my persistent heartburn (which had been largely resolved) was back, usually beginning within an hour or two after taking. In reading other reviews, it may not be the magnesium, or the malic acid that is causing this, but one of the "B" vitamin additions to the formulation that has caused this. It might even be the vitamin "C" that they use. I had intended to begin a "subscribe and save" for this, but I think I need to find another product without the vitamin "B" and "C" additions. I see that Jigsaw has one that they state doesn't contain anything except the magnesium and the malic acid. For the price, I can't afford to be tossing this bottle, so I'll "power through" the negatives and try the other product once done with this one. If I continue to experience problems, then I'll have to assume it's something in the manufacturing process that's causing them and seek out another brand. Update: The good people at Jigsaw refunded my purchase price under their "no questions asked" policy AND provided a sample sized bottle of their "B-Free" product, which seems to have eliminated the problems mentioned in my original review. Because of this, I have started the "subscribe and save" and am upgrading my review to 5 stars for the "B-Free" product. Additional edit 4/2/2018: Be aware that you will be spammed incessantly by Jigsaw once you've purchased this product and there doesn't seem to be an easy way to opt out of receiving their messages. This IS a great product and so far, this has been the only downside I've noted to it. Since it reflects more on their marketing decisions than on the product itself, I continue to believe it deserves it's 5 star rating.