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- Pharmacology For Lisinopril + Hydrochlorothiazide
Lisinopril + Hydrochlorothiazide Pharmacology
Lisinopril + HydrochlorothiazideAbout Lisinopril + HydrochlorothiazideN/AMechanism of Action of Lisinopril + HydrochlorothiazideN/APharmacokinets of Lisinopril + HydrochlorothiazideN/AOnset of Action for Lisinopril + HydrochlorothiazideN/ADuration of Action for Lisinopril + HydrochlorothiazideN/AHalf Life of Lisinopril + HydrochlorothiazideN/ASide Effects of Lisinopril + HydrochlorothiazideN/AContra-indications of Lisinopril + HydrochlorothiazideN/ASpecial Precautions while taking Lisinopril + HydrochlorothiazideN/APregnancy Related InformationN/AOld Age Related InformationN/ABreast Feeding Related InformationN/AChildren Related InformationN/AIndications for Lisinopril + HydrochlorothiazideN/AInteractions for Lisinopril + HydrochlorothiazideN/ATypical Dosage for Lisinopril + HydrochlorothiazideN/ASchedule of Lisinopril + HydrochlorothiazideN/AStorage Requirements for Lisinopril + HydrochlorothiazideN/AEffects of Missed Dosage of Lisinopril + HydrochlorothiazideN/AEffects of Overdose of Lisinopril + HydrochlorothiazideN/A
LisinoprilAbout LisinoprilDicarboxylate-containing Angiotensin-Converting Enzyme (ACE) Inhibitor, Antihypertensive.Mechanism of Action of LisinoprilIt is an angiotensin converting enzyme inhibitor prevents the conversion of angiotensin-1 to angiotensin-2 and abolishes the pressor actions of angiotensin. It decreases aldosterone secretion, sodium and water retention, and total peripheral resistance, leads to fall in BP. The arterioles dilate and the compliance of larger arteries is increased. Both systolic and diastolic BP is lowered. It has no effect on cardiac output and cardiovascular reflexes. There is little dilatation of capacitance vessels; so postural hypotension is not a problem. The drug does not compromise renal, cerebral, and coronary blood flow. BP lowering depending up on sodium status and renin angiotensin activity. So greater fall in BP occurs in Reno vascular accelerated and malignant hypertension. The drug also increases plasma kinin levels and potentiate the hypotensive action of exogenously administered bradykinin. It is used for treatment of systolic heart failure, because it improves symptoms, decrease mortality and reduce ventricular hypertrophy. It reduces both preload and after load and thus increasing cardiac out put in patients with heart failure.Pharmacokinets of LisinoprilAbsorption: Slowly absorbed orally about 25%.
Distribution: Widely distributed, but poor brain penetration.
Metabolism: Not metabolized in the body.
Excretion: Excreted unchanged in urine.
Onset of Action for Lisinopril1 hourDuration of Action for Lisinopril24 hoursHalf Life of Lisinopril12 hoursSide Effects of Lisinopril1. Cough
4. Chest pain
8. Swelling of lips mouth nose and larynx
9. Fetopathic in later half of pregnancy
15. Acute renal failure is precipitated in renal artery stenosis
Contra-indications of Lisinopril1. Hypersensitivity to the drug
2. Renal artery stenosis
3. Aortic stenosis
4. Coarctation of aorta
Special Precautions while taking Lisinopril1.Renal impairment:
3.Severe heart failure
6.Stops diuretics 2 to 3 days before therapy
Pregnancy Related InformationContraindicatedOld Age Related InformationUse with cautionBreast Feeding Related InformationUse with cautionChildren Related InformationContraindicatedIndications for Lisinopril1. Hypertension
2. Congestive heart failure
Interactions for LisinoprilAntacids : Decrease efficacy of Lisinopril.
Indomethacin : Reduces hypotensive effect.
Digoxin : Increases plasma digoxin levels.
Potassium preparations & Postassium sparing diuretics : Hyperkalaemia and increased risk of renal failure.
Lithium : Toxicity due to increased serum concentration of Lithium.
Immunosuppressive Drugs : Increased risk of bone marrow depression.
Antidepressants , Diuretics, Beta-Blockers, Phenothiazines : Enhance hypotensive effect.
Morphine : Enhanced analgesic effect and respiratory depression.
Typical Dosage for LisinoprilStarts with 2.5mg once daily. Increases the dose to 5 to 20mg once daily; depending on patient`s response if required.
Maximum dose: 40mg/day
Schedule of LisinoprilHStorage Requirements for LisinoprilStore at a temperature range of 15 to 30 degree C. in a well closed container and protect from moisture.Effects of Missed Dosage of LisinoprilN/AEffects of Overdose of LisinoprilTreatment is supportive and symptomatic. To remove drug from the body perform induced emesis and gastric lavage. Administer activated charcoal to reduce absorption. In severe cases haemodialysis is considered if required. Treatment includes I.V. infusion of normal saline solution.
HydrochlorothiazideAbout HydrochlorothiazideThiazide derivatibve, Diuretic.Mechanism of Action of HydrochlorothiazideIt is thiazide diuretic which exerts its action by acting at site-3(central dilating segment of early distal tubule). It binds to Na+Cl- symporter and inhibits Na+Cl- symport at the luminal membrane. It has additional carbonic anhydrase inhibitory actions in proximal tubules. It increases natriuresis, kaliuresis and diuresis. It decreases Ca2+ excretion and increases Mg2+excretion. It also has minor carbonic anhydrase inhibitory action. It also causes direct arteriolar vasodilatation and decreases total peripheral resistance. The antihypertensive actions of the drug may be attributable to depletion of sodium and subsequent reduction in plasma volume and a decrease in peripheral resistance. Decrease in peripheral resistance is due to either the loss of sodium from the arteriolar wall or a direct action on the vascular bed. It is an effective drug in edema associated with congestive heart failure.
Vertigo: Diuretics are used in vertigo in assumption that vertigo is due to endolymphatic hydrops. They reduce labyrinthine fluid pressure
Pharmacokinets of HydrochlorothiazideAbsorption: It is absorbed after oral administration.
Metabolism: It is not metabolized in the body.
Excretion: Excreted unchanged in urine.
Onset of Action for Hydrochlorothiazide1 to 3 hoursDuration of Action for Hydrochlorothiazide12 to 16 hoursHalf Life of Hydrochlorothiazide5 to 15 hoursSide Effects of Hydrochlorothiazide1. Dizziness
2. Blurred vision
4. Tingling fingers
5. Dry mouth
14. Elevated levels of glucose, calcium and lipids
15. Gastro intestinal disturbances
17. Electrolyte imbalance
24. Muscle cramps
26. Blood dyscrasias
Contra-indications of Hydrochlorothiazide1. Hyper uricaemia
2. Hyper calcaemia
3. Renal impairment
4. Hepatic impairment
6. Hypersensitivity to the drug
7. Hyper sensitivity to sulfonamides
8. Fluid and electrolyte imbalance
Special Precautions while taking Hydrochlorothiazide1. Gout
2. Diabetes mellitus
3. Renal impairment
4. Hepatic impairment
5. Monitor and correct Fluid and electrolyte imbalance
6. Hyper parathyroidism
Pregnancy Related InformationContraindicatedOld Age Related InformationUse with cautionBreast Feeding Related InformationContraindicatedChildren Related InformationMay be usedIndications for Hydrochlorothiazide1. Hypertension
2. Oedema associated with heart failure
3. Oedema due to renal and hepatic diseases
4. Diabetes insipidus
5. Idiopathic hypercalciurea.
Interactions for HydrochlorothiazideCholestyramine & Colestipol: decrease absorption of hydrochlorothiazide.
Diazoxide: Additive action - may cause hyperglycemia, hyperuricaemia and hypotension.
Digitalis: Diuretics induced hypokalaemia may precipitate digitalis toxicity.
Lithium: Hydrochlorothiazide potentiates therapeutic and toxic effects by increasing its renal excretion.
Frusemide: Synergy leading to profound diuresis and greater than predicted electrolyte loss.
Non-depolarizing muscle relaxants: Diuretics induced hypokalaemia enhances efficacy.
Sulfonylureas: Efficacy decreased due to hydrochlorothiazide induced glucose intolerance.
Propantheline: Bioavailability of hydrochlorothiazide increased.
Metoclopramide: Bioavailability of hydrochlorothiazide decreased.
NSAIDs: Natriuretic effect of hydrochlorothiazide decreased.
Typical Dosage for HydrochlorothiazideAdults:
Hypertension: 25mg once daily or in divided doses. Increased to 50mg if required; depending up on the patient`s response.
Children: 1mg/kg single daily dose.
Starts with 25 to 50mg. Increased the dose until desired response is obtained.
Maximum dose: 200mg/day
Maintenance dosage: 25 to 100mg daily or on alternate days.
Children: 1mg/kg single daily dose or 1 to 3mg/kg/day in two divided doses
Schedule of HydrochlorothiazideGStorage Requirements for HydrochlorothiazideStore at room temperature in a well closed container and protected from light.Effects of Missed Dosage of HydrochlorothiazideTake the missed dose as soon as noticed and if it is the time for next dose then skip the missed dose.Continue the regular schedule.Do not double the dose.Effects of Overdose of HydrochlorothiazideTreatment is supportive and symptomatic. Remove drug from the body by induced emesis and gastric lavage. Monitor and assist respiratory, cardiovascular, and renal function as indicated. Monitor and support fluid and electrolyte balance.
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