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Thyrozine

Clipper Distributing Company LLC

LEVOTHYROXINE SODIUM TABLETS


FULL PRESCRIBING INFORMATION: CONTENTS*




FULL PRESCRIBING INFORMATION

Caution

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

Description

Each Levothyroxine Sodium Tablet provides synthetic crystalline levothyroxine sodium (L-thyroxine).

Action

Levothyroxine sodium acts as does endogenous thyroxine, to stimulate metabolism, growth, development and differentiation of tissues. It increases the rate of energy exchange and increases the maturation rate of the epiphyses. Levothyroxine sodium is absorbed rapidly from the gastrointestinal tract after oral administration. Following absorption, the compound becomes bound to the serum alpha globulin fraction. For purposes of comparison 0.1 mg of levothyroxine sodium elicits a clinical response approximately equal to that produced by one grain (65 mg) of desiccated thyroid.

Indications

Provides thyroid replacement therapy in all conditions of inadequate production of thyroid hormones. Hypothyroidism is the generalized metabolic disease resulting from deficiency of the thyroid hormones levothyroxine (T4) and liothyronine (T3). Levothyroxine sodium will provide levothyroxine (T4) as a substrate for the physiologic deiodination to liothyronine (T3). Administration of levothyroxine sodium alone will result in complete physiologic thyroid replacement.

Canine hypothyroidism is usually primary, i.e., due to atrophy of the thyroid gland. In the majority of cases the atrophy is associated with lymphocytic thyroiditis and in the remainder it is non-inflammatory and as of yet unknown etiology. Less than 10 percent of cases of hypothyroidism are secondary, i.e., due to deficiency of thyroid stimulating hormone (TSH). TSH deficiency may occur as a component of congenital hypopituitarism or as an acquired disorder in adult dogs, in which case it is invariably due to the growth of a pituitary tumor.

Hypothyroidism in the Dog

Hypothyroidism usually occurs in middle-aged and older dogs although the condition will sometimes be seen in younger dogs of the larger breeds. Neutered animals of either sex are also frequently affected, regardless of age. The following are clinical signs of hypothyroidism in dogs:

  •  Lethargy, lack of endurance, increased sleeping
  •  Reduced interest, alertness and excitability
  •  Slow heart rate, weak apex beat and pulse, low voltage on ECG
  •  Preference for warmth, low body temperature, cool skin
  •  Increased body weight
  •  Stiff and slow movements, dragging of front feet
  •  Head tilt, disturbed balance, unilateral facial paralysis
  •  Atrophy of epidermis, thickening of dermis
  •  Surface and follicular hyperkeratosis, pigmentation
  •  Puffy face, blepharoptosis, tragic expression
  •  Dry, coarse, sparse coat, slow regrowth after clipping
  •  Retarded turnover of hair (carpet coat of boxers)
  •  Shortening or absence of estrus, lack of libido
  •  Dry feces, occasional diarrhea
  •  Hypercholesterolemia
  •  Normochromic, normocytic anemia
  •  Elevated serum creatinine phosphokinase

Contraindications

Levothyroxine sodium therapy is contraindicated in thyrotoxicosis, acute myocardial infarction and uncorrected adrenal insufficiency. Use in pregnant bitches has not been evaluated.

Precautions

The effects of levothyroxine sodium therapy are slow in being manifested. Overdosage of any thyroid drug may produce the signs and symptoms of thyrotoxicosis including but not limited to polydipsia, polyuria, polyphagia, reduced heat tolerance and hyperactivity or personality change. The 0.7 mg tablet contains FD&C yellow #5 (tartrazine) which has been associated with allergic type reactions (including bronchial asthma) in susceptible humans. It is unknown whether such a reaction could also occur in dogs. Administer with caution to animals with clinically significant heart disease, hypertension or other complications for which a sharply increased metabolic rate might prove hazardous.

Side Effects

There are no particular adverse reactions connected with L-thyroxine therapy at the recommended dosage levels. Overdose will result in the signs of thyrotoxicosis listed above under precautions.

Dosage

The initial recommended daily dose is 0.1 mg/10 lb body weight. Dosage is then adjusted according to patient's response by monitoring T4 blood levels at time intervals of four weeks.

Administration

L-thyroxine tablets may be administered orally or placed in the food.

Dosage forms available

0.1 mg, 0.2 mg, 0.3 mg, 0.4 mg, 0.5 mg, 0.6 mg, 0.7 mg, and 0.8 mg.

Storage

Store at 15°-30°C (59°-86°F) and protect from light.

0210

PRINCIPAL DISPLAY PANEL - 0.1 mg Tablet Bottle Label

NDC 57319-331-16
Thyrozine 0.1 mg
(Levothyroxine Sodium Tablets, USP)

FOR ANIMAL USE ONLY

KEEP OUT OF REACH
OF CHILDREN

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

Net Contents:
1000 Tablets

PHOENIX

Manufactured for:
Clipper Distributing Company, LLC
St. Joseph, MO 64507

Thyrozine

PRINCIPAL DISPLAY PANEL - 0.2 mg Tablet Bottle Label

NDC 57319-332-16
Thyrozine 0.2 mg
(Levothyroxine Sodium Tablets, USP)

FOR ANIMAL USE ONLY

KEEP OUT OF REACH
OF CHILDREN

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

Net Contents:
1000 Tablets

PHOENIX

Manufactured for:
Clipper Distributing Company, LLC
St. Joseph, MO 64507

Thyrozine

PRINCIPAL DISPLAY PANEL - 0.3 mg Tablet Bottle Label

NDC 57319-333-16
Thyrozine 0.3 mg
(Levothyroxine Sodium Tablets, USP)

FOR ANIMAL USE ONLY

KEEP OUT OF REACH
OF CHILDREN

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

Net Contents:
1000 Tablets

PHOENIX

Manufactured for:
Clipper Distributing Company, LLC
St. Joseph, MO 64507

Thyrozine

PRINCIPAL DISPLAY PANEL - 0.4 mg Tablet Bottle Label

NDC 57319-334-16
Thyrozine 0.4 mg
(Levothyroxine Sodium Tablets, USP)

FOR ANIMAL USE ONLY

KEEP OUT OF REACH
OF CHILDREN

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

Net Contents:
1000 Tablets

PHOENIX

Manufactured for:
Clipper Distributing Company, LLC
St. Joseph, MO 64507

Thyrozine

PRINCIPAL DISPLAY PANEL - 0.5 mg Tablet Bottle Label

NDC 57319-335-16
Thyrozine 0.5 mg
(Levothyroxine Sodium Tablets, USP)

FOR ANIMAL USE ONLY

KEEP OUT OF REACH
OF CHILDREN

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

Net Contents:
1000 Tablets

PHOENIX

Manufactured for:
Clipper Distributing Company, LLC
St. Joseph, MO 64507

Thyrozine

PRINCIPAL DISPLAY PANEL - 0.6 mg Tablet Bottle Label

NDC 57319-336-16
Thyrozine 0.6 mg
(Levothyroxine Sodium Tablets, USP)

FOR ANIMAL USE ONLY

KEEP OUT OF REACH
OF CHILDREN

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

Net Contents:
1000 Tablets

PHOENIX

Manufactured for:
Clipper Distributing Company, LLC
St. Joseph, MO 64507

Thyrozine

PRINCIPAL DISPLAY PANEL - 0.7 mg Tablet Bottle Label

NDC 57319-337-16
Thyrozine 0.7 mg
(Levothyroxine Sodium Tablets, USP)

FOR ANIMAL USE ONLY

KEEP OUT OF REACH
OF CHILDREN

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

Net Contents:
1000 Tablets

PHOENIX

Manufactured for:
Clipper Distributing Company, LLC
St. Joseph, MO 64507

Thyrozine

PRINCIPAL DISPLAY PANEL - 0.8 mg Tablet Bottle Label

NDC 57319-338-16
Thyrozine 0.8 mg
(Levothyroxine Sodium Tablets, USP)

FOR ANIMAL USE ONLY

KEEP OUT OF REACH
OF CHILDREN

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

Net Contents:
1000 Tablets

PHOENIX

Manufactured for:
Clipper Distributing Company, LLC
St. Joseph, MO 64507

Thyrozine

Thyrozine

LEVOTHYROXINE SODIUM TABLET

Product Information

Product Type Prescription animal drug label Item Code (Source) NDC:57319-331
Route of Administration ORAL DEA Schedule

Active Ingredient/Active Moiety

Ingredient Name Basis of Strength Strength
LEVOTHYROXINE SODIUM LEVOTHYROXINE 0.1 mg

Inactive Ingredients

Ingredient Name Strength
cellulose, microcrystalline
SODIUM STARCH GLYCOLATE TYPE A POTATO
MAGNESIUM STEARATE
POVIDONE K29/32
DIBASIC CALCIUM PHOSPHATE DIHYDRATE
FD&C YELLOW NO. 6
D&C YELLOW NO. 10

Product Characteristics

Color Size Imprint Code Shape
YELLOW 10 mm 0;1;T4 OVAL

Packaging

# Item Code Package Description Marketing Start Date Marketing End Date
1 NDC:57319-331-31 180 in 1 BOTTLE, PLASTIC
2 NDC:57319-331-16 1000 in 1 BOTTLE, PLASTIC

Marketing Information

Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
1990-12-01


Thyrozine

LEVOTHYROXINE SODIUM TABLET

Product Information

Product Type Prescription animal drug label Item Code (Source) NDC:57319-332
Route of Administration ORAL DEA Schedule

Active Ingredient/Active Moiety

Ingredient Name Basis of Strength Strength
LEVOTHYROXINE SODIUM LEVOTHYROXINE 0.2 mg

Inactive Ingredients

Ingredient Name Strength
cellulose, microcrystalline
SODIUM STARCH GLYCOLATE TYPE A POTATO
MAGNESIUM STEARATE
POVIDONE K29/32
DIBASIC CALCIUM PHOSPHATE DIHYDRATE
FD&C RED NO. 40

Product Characteristics

Color Size Imprint Code Shape
PINK 10 mm 0;2;T4 OVAL

Packaging

# Item Code Package Description Marketing Start Date Marketing End Date
1 NDC:57319-332-31 180 in 1 BOTTLE, PLASTIC
2 NDC:57319-332-16 1000 in 1 BOTTLE, PLASTIC

Marketing Information

Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
1990-12-01


Thyrozine

LEVOTHYROXINE SODIUM TABLET

Product Information

Product Type Prescription animal drug label Item Code (Source) NDC:57319-333
Route of Administration ORAL DEA Schedule

Active Ingredient/Active Moiety

Ingredient Name Basis of Strength Strength
LEVOTHYROXINE SODIUM LEVOTHYROXINE 0.3 mg

Inactive Ingredients

Ingredient Name Strength
cellulose, microcrystalline
SODIUM STARCH GLYCOLATE TYPE A POTATO
MAGNESIUM STEARATE
POVIDONE K29/32
DIBASIC CALCIUM PHOSPHATE DIHYDRATE
FD&C YELLOW NO. 6
FD&C BLUE NO. 1
D&C YELLOW NO. 10

Product Characteristics

Color Size Imprint Code Shape
GREEN 10 mm 0;3;T4 OVAL

Packaging

# Item Code Package Description Marketing Start Date Marketing End Date
1 NDC:57319-333-31 180 in 1 BOTTLE, PLASTIC
2 NDC:57319-333-16 1000 in 1 BOTTLE, PLASTIC

Marketing Information

Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
1990-12-01


Thyrozine

LEVOTHYROXINE SODIUM TABLET

Product Information

Product Type Prescription animal drug label Item Code (Source) NDC:57319-334
Route of Administration ORAL DEA Schedule

Active Ingredient/Active Moiety

Ingredient Name Basis of Strength Strength
LEVOTHYROXINE SODIUM LEVOTHYROXINE 0.4 mg

Inactive Ingredients

Ingredient Name Strength
cellulose, microcrystalline
SODIUM STARCH GLYCOLATE TYPE A POTATO
MAGNESIUM STEARATE
POVIDONE K29/32
DIBASIC CALCIUM PHOSPHATE DIHYDRATE
D&C RED NO. 7

Product Characteristics

Color Size Imprint Code Shape
PINK 10 mm 0;4;T4 OVAL

Packaging

# Item Code Package Description Marketing Start Date Marketing End Date
1 NDC:57319-334-31 180 in 1 BOTTLE, PLASTIC
2 NDC:57319-334-16 1000 in 1 BOTTLE, PLASTIC

Marketing Information

Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
1990-12-01


Thyrozine

LEVOTHYROXINE SODIUM TABLET

Product Information

Product Type Prescription animal drug label Item Code (Source) NDC:57319-335
Route of Administration ORAL DEA Schedule

Active Ingredient/Active Moiety

Ingredient Name Basis of Strength Strength
LEVOTHYROXINE SODIUM LEVOTHYROXINE 0.5 mg

Inactive Ingredients

Ingredient Name Strength
cellulose, microcrystalline
SODIUM STARCH GLYCOLATE TYPE A POTATO
MAGNESIUM STEARATE
POVIDONE K29/32
DIBASIC CALCIUM PHOSPHATE DIHYDRATE

Product Characteristics

Color Size Imprint Code Shape
WHITE 10 mm 0;5;T4 OVAL

Packaging

# Item Code Package Description Marketing Start Date Marketing End Date
1 NDC:57319-335-31 180 in 1 BOTTLE, PLASTIC
2 NDC:57319-335-16 1000 in 1 BOTTLE, PLASTIC

Marketing Information

Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
1990-12-01


Thyrozine

LEVOTHYROXINE SODIUM TABLET

Product Information

Product Type Prescription animal drug label Item Code (Source) NDC:57319-336
Route of Administration ORAL DEA Schedule

Active Ingredient/Active Moiety

Ingredient Name Basis of Strength Strength
LEVOTHYROXINE SODIUM LEVOTHYROXINE 0.6 mg

Inactive Ingredients

Ingredient Name Strength
cellulose, microcrystalline
SODIUM STARCH GLYCOLATE TYPE A POTATO
MAGNESIUM STEARATE
POVIDONE K29/32
DIBASIC CALCIUM PHOSPHATE DIHYDRATE
D&C RED NO. 30
FD&C BLUE NO. 1

Product Characteristics

Color Size Imprint Code Shape
PURPLE 10 mm 0;6;T4 OVAL

Packaging

# Item Code Package Description Marketing Start Date Marketing End Date
1 NDC:57319-336-31 180 in 1 BOTTLE, PLASTIC
2 NDC:57319-336-16 1000 in 1 BOTTLE, PLASTIC

Marketing Information

Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
1990-12-01


Thyrozine

LEVOTHYROXINE SODIUM TABLET

Product Information

Product Type Prescription animal drug label Item Code (Source) NDC:57319-337
Route of Administration ORAL DEA Schedule

Active Ingredient/Active Moiety

Ingredient Name Basis of Strength Strength
LEVOTHYROXINE SODIUM LEVOTHYROXINE 0.7 mg

Inactive Ingredients

Ingredient Name Strength
cellulose, microcrystalline
SODIUM STARCH GLYCOLATE TYPE A POTATO
MAGNESIUM STEARATE
POVIDONE K29/32
DIBASIC CALCIUM PHOSPHATE DIHYDRATE
FD&C YELLOW NO. 5
FD&C RED NO. 40

Product Characteristics

Color Size Imprint Code Shape
ORANGE 10 mm 0;7;T4 OVAL

Packaging

# Item Code Package Description Marketing Start Date Marketing End Date
1 NDC:57319-337-31 180 in 1 BOTTLE, PLASTIC
2 NDC:57319-337-16 1000 in 1 BOTTLE, PLASTIC

Marketing Information

Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
1990-12-01


Thyrozine

LEVOTHYROXINE SODIUM TABLET

Product Information

Product Type Prescription animal drug label Item Code (Source) NDC:57319-338
Route of Administration ORAL DEA Schedule

Active Ingredient/Active Moiety

Ingredient Name Basis of Strength Strength
LEVOTHYROXINE SODIUM LEVOTHYROXINE 0.8 mg

Inactive Ingredients

Ingredient Name Strength
cellulose, microcrystalline
SODIUM STARCH GLYCOLATE TYPE A POTATO
MAGNESIUM STEARATE
POVIDONE K29/32
DIBASIC CALCIUM PHOSPHATE DIHYDRATE
FD&C BLUE NO. 1

Product Characteristics

Color Size Imprint Code Shape
BLUE 10 mm 0;8;T4 OVAL

Packaging

# Item Code Package Description Marketing Start Date Marketing End Date
1 NDC:57319-338-31 180 in 1 BOTTLE, PLASTIC
2 NDC:57319-338-16 1000 in 1 BOTTLE, PLASTIC

Marketing Information

Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
1990-12-01


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Be sure to consult your doctor before taking any medication!
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