Overdose treatment: day maximum dose of 4g. Large doses of the product (one day 8g, continuous take 3 to 4 weeks) methenamine use, there may be irritative bladder symptoms (dysuria, urinary frequency), proteinuria and hematuria, and even liver may occur, kidney toxicity. Interactions 1, the goods and sulfa drugs combined methenamine spot, as the product of decomposition of formaldehyde in the urine, make some sulfa drugs form an insoluble precipitate, it appears to increase the crystallization of urine. 2, antacids containing magnesium or calcium, carbonic anhydrase inhibitors, citrate, sodium bicarbonate, thiazide diuretics can make the urine becomes alkaline, affect the efficacy of the product. Note: 1 tablet methenamine, aspirin allergy caution. 2, should always be measured in urine pH value and keep the urine acidic (pH value should be 5.5 or less). In order to maintain urine pH at 5.5 or less, should avoid eating citrus fruits, milk, cheese products and other basic food wholesale methenamine, can add a lot of vitamin C (4g or more per day), hydrochloric acid, arginine, also give ammonium chloride or di-sodium phosphate (impaired renal function were given large doses of ammonium chloride can cause metabolic acidosis, it is disabled; impaired liver function Zheyi disabled) to make urine acidification. Shandong three-level chemical _ _ methenamine methenamine provided by Jinan three ping Chemical Co. Jinan three ping Chemical Co. (www.sanpinghuagong.com) quality of service and products, continue to receive the recognition and trust of new and old customers and the industry. Our company is a certified member of the whole alliance network operators, business alliance customer service icon on the page, you can talk directly with our customer service staff, to our future cooperation happy!