FeliGum Struvite Dietary supplementary feed for cats and small dogs For dissolving struvite stones DL-methionine is a sulphur-containing amino acid that acidifies the urine and can thus dissolve struvite stones in the bladder. Glucosaminoglucans (GAGs) supplement the protective layer of the bladder wall that is defective in the case of GAG deficiency. Cranberry promotes the flushing of bacteria from the urinary tract. FeliGum Struvite also contains nettle extract. The American Low Value Shipment Regulatory Modernization Act is active since March 2016 and increases the duty and tax free value of goods American citiziens could import from other countries by mail from $200 to $800 as well as no formal customs procedures are required. The American Low Value Shipment Regulatory Modernization Act is active since March 2016 and increases the duty and tax free value of goods American citiziens could import from other countries by mail from $200 to $800 as well as no formal customs procedures are required