Hi, Stefer, and welcome! I"m glad you found us and joined in. I see you found Fibro 101 and the link about malic acid. Your best bet would be to order some from Puritan.com if you want the exact same dosage. It only says malic acid on the bottle but it has the magnesium in the form of magnesium malate...very easily absorbed.
I have no vested interest in that site but have been using the site for years and have had good success. It truly is the least expensive. They usually have a buy 1 get 2 free sale, too, and I sure can use that! I also get my vitamin D3 and CoQ10 there. You do have to be careful when buying supplements because they are not regulated so the potency could be off, etc.
I wish I could be of more help to you. Every manufacturer does things differently. But I do know that you need at least 2,400 mg of malic acid to start getting relief...at least that's what the studies have shown. I wish you good luck on this. What helps one with fibro doesn't necessarily help another but many have gotten some relief with these.
I'm looking forward to getting to know you better. Don't hesitate to ask questions because we are here to help you . Hope to hear more from you soon.
Sherrine