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Methio Form (DL-Methionine) chew tabs (150 tabs)

Item# IWM006393
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Methio-Form is a palatable, dose controlled urine acidifi er for both cats and dogs. Owners are now able to reliably increase the acidity of pet urine without the need to purchase expensive specialty diets and monitor consumption.

Methio-Form may aid in the prevention of FLUTD and has shown effi cacy in the medical dissolution of struvite uroliths. Indicated for extended term use, Methio-Form helps support life-long urinary health: safely and economically.

Key Benefits

  • Palatable fish flavor base
  • Proven effective for struvite urolith dissolution
  • A single 500-mg Methio-Form tablet per day will double the hydrogen ion concentration (acidity) of male feline urine
  • Scored tablets permit easy, accurate administration
  • Helps control urine odor in male cats

How It Works

Methio-Form Chewable Tablets contains D-L methionine and is used to acidify urine in both dogs and cats. Urinary acidifiers are used when the pH of the urine is too high, causing struvite stone and crystal formation. It may help in dissolving struvite stones with time. Methio-Forms active ingredient is dl-methionine, an amino acid that acidifies your pets urine. It also helps to treat and prevent certain types of bladder stones.


For use as an aid in acidifying the urine of cats and dogs.


DL- Methionine . . . . . 500 mg (6.7 mEq)

In a palatable protein base.


View Methio Form Drug Facts Sheet.

Daily dosages vary with diets and amount of acidifi cation needed. After dosages have been determined, they may be used continuously.


The usual daily dose is 2.5 to 5.0 mEq/kg body weight or 1/2 to 1 tablet per 1 to 1.5 kg (2.5 to 3 lb) body weight. Average size adult cats normally should receive 1 1/2 to 3 tablets (10 to 20 mEq) daily.


The usual daily dose is 2 to 4 mEq/kg body weight. Small breeds - 7 kg (15 lb) or under, 1/2 to 4 tablets daily.Medium breeds - 7 to 15 kg (15–33 lb), 2 to 7 tablets daily.Large breeds - 15 to 30 kg (33-66 lb), 4 to 13 tablets daily.


In rare cases animals may experience gastrointestinal disturbance. In those cases, administer during feeding or in two to three divided doses.

Federal law restricts this drug to use by or on the order of a licensed veterinarian.


Over-consumption may result if access to open bottles occurs. The effect may be severe and could result in life-threatening metabolic acidosis if veterinary treatment is not initiated.


Do not administer to animals with severe liver, kidney or pancreatic disease, or which are acidotic.


For additional indications and information, consult package insert.

Possible Side Effects

Side effects that usually are not serious include: Upset stomach If this sign is severe, worsens, or continues to be a problem, contact your veterinarian.

Side effects that may be serious or indicate a serious problem: Sudden onset of weakness. Red-brown urine (cats). Pale gums (cats). If you see any of these signs, contact your veterinarian immediately.


Store at room temperature and protect from light. Avoid excessive heat (104°F).


Methio-Form is a urinary acidifier used to treat and prevent certain types of urinary stones. It can help prevent urinary tract infections and bladder stones.
  • Prevents bladder stone formation.
  • Prevents urinary tract infections.
  • Easy to administer (can be mixed with food)

Features of Methio-Form:

  • Easily administered formula may be combined with food
  • Effective prevention against urinary tract infections
  • Useful in preventing formation of bladder stones
Methio-Form Chewable Tablets contain DL-methionine. They are effective in acidifying urine in cats and dogs. Urinary acidifiers are indicated when the urine's pH is too high, which can cause crystal and struvite stone formation. Over time, it may help to dissolve struvite stones. DL-methionine is a urine-acidifying amino acid. It may also help in the treatment of some types of bladder stones.

Adverse reactions may include:

  • Diarrhea
  • Vomiting
  • Nausea
  • Appetite Loss

Other reactions could also occur. Speak with your veterinarian if you notice these or any other reactions that appear bothersome or unusual for your pet.

Do not give to animals with any of the following conditions:

  • Urinary obstruction
  • Uncontrolled diabetes mellitus or any other acidotic conditions
  • Severe pancreatic disease
  • Severe kidney disease
  • Severe liver disease

Use caution in overdosing animals to avoid chronic over-acidification as this could cause problems such as:

  • Precipitation of non-struvite minerals in the urine
  • Heinz body formation
  • Osteoporosis
  • Potassium wasting
  • Acidosis
Contact your closest emergency pet hospital.

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