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DL-Methionine 500mg, 1000 Tablets

DL-Methionine 500mg Tablets l Urinary Acidifier For Pets - Cat

Our Price: $36.34

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Product Code: 17324


DL-Methionine Tablets, 500mg

DL-Methionine Tablets are for use as an aid in acidifying the urine of dogs and cats. DL-Methionine is also an aid in controlling the odor from feline and canine urine residues.

DL-Methionine tablets maybe used as a source of this essential amino acid.

DL-Methionine may be used to prevent the formation of magnesium ammonium phosphate crystals in the urine. These crystals are commonly called struvite, Struvite is the most frequently involved mineral in uroliths that occur in feline lower urinary tract disease (LUTD) also known as feline urologic syndrome (FUS). Struvite crystals are more soluble in acid urine and tend not to develop and will eventually dissolve as urinary pH is reduced. Methionine is effective in increasing urine acidity.

LUTD (FUS) is relatively common and affects both sexes; however, male cats are more frequently involved. Cystitis and urolithiasis produce post-renal uremia with elevated blood urea nitrogen (BUN), hyperphosphatemia, hyperkalemia, metabolic acidosis, and death if not treated.

The following principles have been suggested for uroliths in LUTD that are predominantly composed of struvite to reduce the concentration of pre-struvite crystalloids and formation of calculi.

  • Reducing crystalloid concentration by reducing dietary concentration of magnesium and phosphorus to minimal requirements.

  • Increasing urinary volume by increasing water intake.

  • Increasing solubility of crystalloids by reducing urinary pH and holding at a reduced value.


Adult cats: one tablet per 10 lbs body weight 1 or 2 times daily with food. Not intended for use in kittens.

Dogs: 1/2 tablet per 10 lbs body weight 1 or 2 times daily with food.

For urinary acidification in cats and dogs and prevention of struvite urolithiasis urinary pH should be reduced to approximately 6.0 - 6.6 and maintained in this range. Monitoring the pH of freshly voided urine may be advisable.

Contraindications: Do not administer to animals with severe liver, kidney or pancreatic disease, or those which are acidotic due to conditions such as uncontrolled diabetes mellitus or urinary obstruction.

Storage: Keep tightly closed in a cool, dry place at room temperature 59-86°F.

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 3 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 Excellent product April 12, 2024
Reviewer: Carol Recker from Maple Park, IL United States  
My Schipperke mix was prescribed this about three years ago.  About a year and a half ago my vet was no longer able to get it from her sources.  She had me google my own source and I found Medi-vet.com . DL-Methionine 500mg tablets are about the size of a men's dress button (a bit thicker).  My dog eats it with no problem and it is keeping the crystals at bay in his urine.

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  0 of 0 people found the following review helpful:
5 of 5 Super fast check out and delivery April 12, 2024
Reviewer: Anonymous Person from Boulder, CO United States  
We buy this medication once a year and reordering is always easy, delivery always very fast.

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  0 of 0 people found the following review helpful:
5 of 5 April 12, 2024
Reviewer: Anonymous Person from ,  

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