Aspirin+ Glycine Pharmacology

Aspirin+ Glycine

About Aspirin+ Glycine
Salicylate,antiplatelet agent
Mechanism of Action of Aspirin+ Glycine
Aspirin inhibits cyclooxygenase (prostaglandin synthetase) thereby reducing the synthesis of prostaglandins and thromboxanes. These effects are thought to be how aspirin produces analgesia, antipyrexia, and reduces platelet aggregation and inflammation. Most cells can synthesize new cyclooxygenase, but platelets cannot. Therefore, aspirin causes an irreversible effect on platelet aggregation.Glycine is used in combination with aspirin to reduce the gastric toxicity of aspirin.
Pharmacokinets of Aspirin+ Glycine
Absorption: Rapidly absorbed from the GI tract
Distribution: Widely distributed; crosses the placenta; enters breast milk. Protein-binding: 80-90%.
Metabolism: Hepatic; converted to metabolites.
Excretion: Via urine by glomerular filtration, active renal tubular secretion and passive tubular reabsorption (as unchanged drug); via haemodialysis
Onset of Action for Aspirin+ Glycine
N/A
Duration of Action for Aspirin+ Glycine
N/A
Half Life of Aspirin+ Glycine
15-20 minutes
Side Effects of Aspirin+ Glycine
1.Prolonged bleeding time
2.Rhinitis
3.Urticaria and epigastric discomfort
4.Angioedema,
5.Bronchospasm.

Potentially Fatal:
1.Severe, occasionally fatal exacerbation of airway obstruction in asthma
2.Reye's syndrome (children <12 yr).
3.Hepatotoxicity;
4.CNS depression which may lead to coma
5.CV collapse and resp failure
6.Paroxysmal bronchospasm and dyspnoea.
Contra-indications of Aspirin+ Glycine
1.Hypersensitivity
2.Active peptic ulceration
3.Patients with haemophilia or haemorrhagic disorders, gout, severe renal or hepatic impairment
Special Precautions while taking Aspirin+ Glycine
1.History of peptic ulcer or those prone to dyspepsia
2.Gastric mucosal lesion
3.Asthma or allergic disorders
4.Dehydrated patients
5.Uncontrolled hypertension
6.Impaired renal or hepatic function
Pregnancy Related Information
Contraindicated
Old Age Related Information
Use with caution
Breast Feeding Related Information
Contraindicated
Children Related Information
<12 yr Contraindicated
Indications for Aspirin+ Glycine
N/A
Interactions for Aspirin+ Glycine
1.Alcohol, corticosteroids, analgin, phenylbutazone and oxyphenbutazone may increase risk of GI ulceration.
2.Aspirin increases phenytoin levels.
3.May antagonize actions of uricosurics and spironolactone.

Potentially Fatal: May potentiate effects of anticoagulants, methotrexate and oral hypoglycaemics.
Typical Dosage for Aspirin+ Glycine
N/A
Schedule of Aspirin+ Glycine
N/A
Storage Requirements for Aspirin+ Glycine
N/A
Effects of Missed Dosage of Aspirin+ Glycine
N/A
Effects of Overdose of Aspirin+ Glycine
N/A

Aspirin

About Aspirin
Salicylate, Non narcotic analgesic, anti pyretic ,anti inflammatory.
Mechanism of Action of Aspirin
Aspirin has analgesic, anti-inflammatory and antipyretic action. Analgesic action: Central action: Aspirin acts on the Hypothalamus and inhibits the generation of pain impulses.
Peripheral action: It acts by inhibition of Prostaglandin (PGs) synthesis by blocking the activity of the precursor enzyme cyclo-oxygenase.
Anti-inflammatory action: It acts by inhibiting Prostaglandin (PGs) synthesis and their release at the site of injury. Prostaglandins cause tenderness and amplify the action of other algesics. Aspirin inhibits cyclo-oxygenase enzyme and antagonizes prostaglandin actions. It also inhibits other inflammatory mediators.
Antipyretic action: Aspirin lowers fever by affecting thermoregulation in the CNS and by inhibiting the action of prostaglandins peripherally. Aspirin inhibits the production of prostaglandin E1 which is the powerful pyretic agent.
Anticoagulant action: Aspirin inhibits the synthesis of Thromboxane A2 and Prostacyclin (PGI2). This leads to inhibition of platelet aggregation.
Pharmacokinets of Aspirin
Absorption: Aspirin is rapidly and completely absorbed after oral administration. Distribution: It is widely distributed in the body in protein bound form. Metabolism: It is completely metabolised in the liver. Excretion: Excreted in the urine.
Onset of Action for Aspirin
5-30 minutes
Duration of Action for Aspirin
1 - 4 hours
Half Life of Aspirin
15 - 20 minutes
Side Effects of Aspirin
1.Nausea,
2.Vomiting,
3.Diarrhoea,
4.Gastrointestinal bleeding,
5.Abdominal distress,
6.Dyspepsia,
7.Dizziness,
8.Blurred vision,
9.Tinnitus,
10.Rash,
11.Pruritis
12.Ototoxicity
Contra-indications of Aspirin
1.Hypersensitivity to Aspirin and other NSAIDs,
2.Peptic ulcer,
3.Bleeding disorders- Haemophilia, von Willebrand`s disease
4.Chicken pox and flu like syndrome in children
Special Precautions while taking Aspirin
1.Hepatic impairment
2.Renal impairment
3.Cardiovascular diseases- hypertension
4.Gastrointestinal diseases
5.Hypoprothrombinemia
6.Pre existing asthma
7.Patient on anticoagulant therapy
8.Diabetes


Pregnancy Related Information
Use with caution
3rd trimester: Contraindicated
Old Age Related Information
Use with caution
Breast Feeding Related Information
Use with caution.
Children Related Information
Use with caution
NEONATES: contraindicated
Indications for Aspirin
1.Rheumatoid arthritis,
2.Ankylosing spondylitis,
3.Acute gout,
4.Joint disorders e.g. inflammatory disease in joints, crystal deposition in the joints,
5.Osteoarthritis,
6.For the relief of fever, pain and inflammation in dental, minor surgery and orthopedic
7.Dysmenorrhoea,
8.Rheumatic fever
9. Juvenile arthritis
10.Migraine

Interactions for Aspirin
Drugs Affecting Aspirin:
Activated charcoal: Decreases absorption of aspirin.
Antacids Urinary alkalizers and Cortiosteroids: Decrease efficacy of aspirin.
Drugs affected by aspirin:
Alcohol: Risk of G.I. ulceration increases; may also prolong bleeding time.
ACE inhibitors: Antihypertensive action decreased.
Oral Anticoagulants : May potentiate effect.
Methotrexate: Effect potentiated.
Tetracycline: Efficacy decreased.
Tricyclic Antidepressants - Effect potentiated.
Nitroglycerin: May result in unexpected hypotension.
Beta-adrenergic Blockers - Antihypertensive effect blunted.
NSAIDs: May decrease serum concentration.
Sulfonylureas and Exogenous Insulin: In high doses may potentiate these drugs.
Valproic Acid: Potentiates effect.
Spironolactone: May inhibit diuretic effect.
Probenecid & Sulfinpyrazone : Antagonise uricosuric effect (In doses > 3gm/day - uricosuric effect)
Lab Tests:
Thyroid Function Tests: Increase in PBI
Serum Uric Acid Levels: Increased by levels less than 10 mg/dl and decreased by levels> 10 mg/dl.
Urine Glucose: False negative by glucose oxidase method. False positive results by reduction method.
Urinary Ketones: Produce reddish colour.
Typical Dosage for Aspirin
Adult:
Analgesic, antipyretic: 325 - 650mg 3 -4 times daily.
Anti-inflammatory, Arthritis: 3 g / day in divided doses increases the dose if needed.
Maintenance: 3.6 - 5.4 g / day in divided doses.
Rheumatic fever: 4.9 - 7.8 g / day in 3 - 4 divided doses for 1- 2 weeks
For prophylaxis of venous thromboembolism after total hip replacement: 650 mg twice a day started 1 day before surgery and continued for 2 weeks.
For other platelet aggregation inhibitory uses: 325 to 1300 mg daily according to individual needs.
For migraine: 300 - 600 mg to be taken at the first sign of migraine attack and repeated 4 - 6 hourly until suppress mild attacks.

Children:
Arthritis: 60 - 130 mg / kg body weight /day in divided doses
Anti-inflammatory: 60 - 125 mg / kg daily in 4 - 6 hours
Analgesic and Antipyretic: Adults: 1 to 2 tablets (325 to 650 mg) orally every 4 hours.
Children under 12: 10 to 15 mg/kg every 6 hours, not to exceed total daily dose of 2.4 g.
Schedule of Aspirin
N/A
Storage Requirements for Aspirin
N/A
Effects of Missed Dosage of Aspirin
N/A
Effects of Overdose of Aspirin
N/A

Glycine

About Glycine
Sterile irrigation solution
Mechanism of Action of Glycine
N/A
Pharmacokinets of Glycine
N/A
Onset of Action for Glycine
N/A
Duration of Action for Glycine
N/A
Half Life of Glycine
N/A
Side Effects of Glycine
1.Salivation
2.Nausea
3.Marked diuresis
4.Electrolyte loss
5.Urinary retention
6.Edema
Contra-indications of Glycine
Anuria
Special Precautions while taking Glycine
1.Cardiac diseases
2.Impaired liver function
Pregnancy Related Information
May be used
Old Age Related Information
Use with caution
Breast Feeding Related Information
Use with caution
Children Related Information
N/A
Indications for Glycine
Use as irrigating fluid during transurethral prostatic resection and other transurethral surgical procedures
Interactions for Glycine
N/A
Typical Dosage for Glycine
The volume of solution needed will vary with the nature and duration of the urologic procedure
Schedule of Glycine
N/A
Storage Requirements for Glycine
Store in a well closed container at room temperature. Keep out of the reach of children
Effects of Missed Dosage of Glycine
N/A
Effects of Overdose of Glycine
N/A

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