Prescribed for Life Borax Powder | Pure USP-NF Grade All Natural Sodium Borate Powder | Household Laundry Booster, Slime Activator & Multipurpose Cleaning Powder, 4 oz (113 g)

Takes just slightly longer to dissolve in water but dissolves clear and tastes pure with no difference in effects from non-USP grade powder. While I haven't requested a COA to attest to the USP label, the crystalline form and strong pure taste suggest it's borax that has been dissolved in water, filtered, and recrystallized to meet USP requirements. This crystalline form is more dense than powdered borax, so the same size spoon/scoop will weigh more and therefore contain more boron. Micro scoops confirmed on a milligram scale help to accurately dose. Both this crystalline form and the regular powdered form should be estimated at 11.3% boron by weight.

Would highly recommend. If you want the pure stuff this, is it.

1/8 tsp in coffee. Had issues with copd type symptoms and thick mucus and sinus issues. All symptoms are almost gone. I've been using for 2 weeks.

A good item for an inexpensive source magnesium. With born which strengthens bones, and all other benefits. Great. Mixed well. Does have a taste but tolerable when considering all benefits.

Quality product