GuaiLife Laboratory Analysis 

GuaiLife guaifenesin is repeatedly tested to ensure potency. It is tested during production by the manufacturer. GuaiLife then sends its product to an independent company for confirmatory tests. In addition, GuaiLife guaifenesin is tested at regular intervals to ensure its formula is fully potent.

Most Recent Testing: Test results from Integrated Biomolecule Labs- February 1, 2007

GuaiLife 200 mg - label expiration date 4-07 tested with a potency of 212 mg per tablet GuaiLife 400 mg- label expiration date 4-07 tested with a potency of 424 mg per caplet

GuaiLife 200 mg- label expiration date 5-05 tested with a potency of 214 mg per tablet GuaiLife 400 mg-label expiration date 5-05 tested with a potency of 431 mg per caplet

Results show that GuaiLife guaifenesin is a stable product that remains fully potent over a period of at least 4 years.

Manufacturing processes do not allow for exact milligram content. FDA guidelines say that milligram content should be within a percentage of its labeled amount.