Uniform mixture of 50mg Tetrahydrobiopterin (BH4) and 950mg Ascorbic Acid for stability purposes. Total weight is 1000mg, or 1 gram. 20 mg of mixture is equivalent to 1 mg BH4. Please confirm total weight with a milligram scale on receipt.
WARNING: 1000mg is a small amount, less than a tablespoon.
Ships with thermal packaging. Not eligible for free shipping.