Aug
1
Cevimeline
August 1, 2009 | Leave a Comment
Generic Name
Cevimeline (seh-VIM-ih-lene) 9
Brand Name Evoxac
Type of Drug Cholinergic.
Prescribed For
Dry mouth in people with syndrome.
General Information
Sj6gren’s syndrome jS a group 0j symptoms related to a lack of bodily secretions. People with this condition have very dry eyes and mucous membranes, facial lesions, and neck swelling. It often occurs in menopausal woman and is often associated with rheumatoid arthritis, poor blood circulation in the legs, and tooth decay. Cevimeline increases secretions in the mouth by binding to specific nervous system receptors and causing the release of more saliva.
Cautions and Warnings
Do not take cevimeline if you are allergic or sensitive to any of its
ingredients.
This drug may make breathing more difficult and worsen lung conditions such as asthma, chronic bronchitis, or chronic obstructive pulmonary disease (COPD).
Eye conditions like glaucoma or inflammation of the iris may be worsened by cevimeline.
Cevimeline may affect the heart, and some people with severe heart disease, including those with a history of severe angina or heart attack, may not be able to compensate for this effect.
Cevimeline may worsen gallstones and kidney stones and should be avoided by people with a history of these conditions.
Cevimeline may cause visual blurring, especially at night.
Possible Side Effects
✓ Most common: excessive sweating, headache, nausea, sinus irritation, respiratory infection, runny nose, and diarrhea.
✓ Common: upset stomach, abdominal pains, urinary infection, coughing, and sore throat.
✓ Less common: vomiting, back pain, injury, rash, conjunctivitis (pinkeye), dizziness, bronchitis, severe joint pain, fatigue, bone pain, sleeplessness, hot flushes, excess salivation, chills, and anxiety.
✓ Rare: frequent urination, weakness, and flushing. Other rare side effects can occur in almost any part of the body. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
• Combining cevimeline with a beta blocker can lead to heart rhythm disturbances.
• Cevimeline may interfere with the effects of anticholinergics, found in Some medications for abdominal or stomach spasms or cramps.
• Cholinergics such as bethanechol, donepezil, physostigmine, pilocarpine, and pyridostigmine can add to the effects of cevimeline.
• Some drugs may interfere with the breakdown of cevimeline in the liver, increasing the chance of drug side effects. These include amiodarone, celecoxib, chlorpheniramine, cimetidine, ciprofloxacin, clarithromycin, clomipramine, cocaine, diltiazem, erythromycin, fluconazole, fluoxetine, halofantrine, indinavir, itraconazole, ketoconazole, methadone, mibefradil, nelfinavir, paroxetine, quinidine, ranitidine, ritonavir, saquinavir, and terbinafine.
Food Interactions
Grapefruit juice may interfere with the breakdown of cevimeline in the liver, increasing the chance of drug side effects. Food interferes with the absorption of cevimeline into the bloodstream. Take this drug on an empty stomach.
Usual Dose
Adult: 30 mg 3 times a day. Child: not recommended.
Overdosage
Overdose symptoms can include exaggerated drug side effects including headache, visual impairment, excess tearing and/or sweating, difficulty breathing, stomach or intestinal spasms, nausea, vomiting, diarrhea, changes in heart rhythm, blood pressure changes, shock, mental confusion, and tremors. Overdose victims should be taken to a hospital emergency room. ALWAYS bring the prescription bottle or container.
Special Information
cevimeline may cause blurred vision, possibly interfering with driving or performing tasks that require reliable vision, especially at night or in low light.
If you sweat excessively while taking cevimeline, be sure to drink a lot of water. Excessive sweating can lead to dehydration.
If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: Pregnant women should take cevimeline only if it is considered crucial by your doctor, since its effect on the developing fetus is not known.
It is not known if cevimeline passes into breast milk, but nursing mothers who must take this drug should consider using infant formula.
Seniors: Older adults should be cautious about using this drug because of its possible effects on the kidney, liver, and heart, and on other diseases or medications.
Jul
16
Aldosterone Blockers
July 16, 2009 | Leave a Comment
Type of Drug
Aldosterone Blockers (al-DOH-stir-own)
Brand Names
Generic Ingredient: Eplerenone Inspra
Generic Ingredient. Spironolactone Aldactone
Combination Product
Generic Ingredients: Hydrochlorothiazide + Spironolactone Aldactazide
Prescribed For
High blood pressure, cirrhosis, and congestive heart failure (CHF); also used for people with low blood potassium who require a diuretic.
General Information
Aldosterone blockers limit the access of aldosterone—a hormone that helps to regulate several different body functions—from its receptor. Too much aldosterone results in high sodium levels, which can lead to water retention and potassium loss; it can also affect the size, shape, and function of the heart. Aldosterone blockers are generally combined with other medicines in the management of disease. These drugs are useful in removing excess body fluids in conditions associated with high aldosterone levels.
One in every ten people with high blood pressure has excess aldosterone in their systems. In people with congestive heart failure (CHF), aldosterone levels can be 20 times higher than normal, which can worsen their condition, making the use of aldosterone blockers an important part of their treatment. Aldosterone block-ers also help the heart return to normal size, shape, and function in people with heart failure. Eplerenone is broken down in the liver, primarily by an enzyme system known as CYP3A4.
Cautions and Warnings
Do not take aldosterone blockers if you are allergic or sensitive to any of their ingredients.
Do not use aldosterone blockers if you have kidney failure or high blood potassium.
People with liver disease should be cautious about using a!- dosterone blockers.
People taking an aldosterone blocker should have their potassium levels checked periodically.
People with diabetes who have albumin in their urine should not take aldosterone blockers.
Possible Side Effects
Eplerenone
✓ Less common: dizziness, diarrhea, fatigue, flu-like symptoms, coughing, abdominal pain, elevation of blood cholesterol and/or triglyceride levels, elevation of blood potassium levels, and albumin in the urine.
✓ Rare: enlargement of the breasts in males, irregular menstrual cycles in women, and painful breasts. Contact your doctor if you experience any side effect not listed above.
Spironolactone
✓ Less common: drowsiness, lethargy, headache, gastrointestinal upset, cramps and diarrhea, rash, mental confusion, fever, feeling unwell, enlargement of the breasts in males, impotence, and irregular menstrual cycles or deepening of the voice in women.
Drug Interactions
• Do not combine eplerenone with itraconazole or ketoconazole. These drugs can cause the amount of eplerenone in the blood to increase by up to 500% and may cause fatal increases in blood potassium.
• Mixing eplerenone with erythromycin, fluconazole, saquinavir, or verapamil increases the amount of eplerenone in the blood. People taking this combination must watch for signs of high blood potassium (see “Special Information”) and have their blood potassium levels checked regularly.
• Combining a potassium supplement and an aldosterone blocker can lead to dangerously high blood levels of potassium. Do not use a salt-substitute or take any extra potassium unless prescribed by your doctor.
• Combining an aldosterone blocker with an ACE inhibitor or an angiotensin H receptor blocker (ARB) may significantly raise blood potassium. Be sure your doctor monitors your potassium levels if you combine these drugs.
• Spironolactone may interfere with anticoagulant (blood-thinning) drugs and mitotane (an anticancer drug).
• Aspirin can interfere with the diuretic effect of spironolactone but does not alter its effect on high blood pressure or CHF.
• Combining spironolactone with alcohol, barbiturates, or narcotics can lead to dizziness or fainting when rising suddenly from a sitting or lying position.
• Combining spironolactone and a corticosteroid can lead to very low blood potassium.
• Spironolactone may alter your response to drugs used during general anesthesia.
• Lithium generally should not be combined with any diuretic.
• Combining nonsteroidal anti-inflammatory drugs (NSAIDs) with aldosterone blockers can lead to severe elevations of blood potassium and reduce the blood-pressure-lowering effect of the diuretic.
• Spironolactone may raise digoxin blood levels and increase the risk of severe digoxin side effects. Your doctor may have to adjust your digoxin dosage.
• St. John’s wort (a CYP3A4 inducer) may decrease eplerenone levels by about 30%.
Food Interactions
Food appears to increase the amount of spironolactone absorbed into the blood. Take this drug with food at the same time every day. Eplerenone may be taken without regard to food or meals. Taking this drug with grapefruit juice increases the amount of drug absorbed into your body.
Usual Dose
Eplerenone
Adult 50-100 mg a day. Child: not recommended.
Spironolactone
Adult: Starting dosage is 50-100 mg a day in divided doses for high blood pressure; 25-200 mg a day in divided doses for high fluid levels related to other diseases; and 25-100 mg a day for low potassium levels related to diuretic use.
Child: 1-2 mg per lb. of body weight a day.
Spironolactone + Hydrochlorothiazide Adult: 1-4 tablets daily.
Overdosage
Eplerencne overdose may lead to low blood pressure and high blood potassium. Spironolactone overdose may lead to drowsiness. confusion, rash, nausea, vomiting, dizziness, and diarrhea. Rarely. coma may occur in people with severe liver disease. High blood potassium may also occur, especially in people with kidney zsease. Call your local poison control center or a hospital emercency room for more information. If you seek treatment, ALWAYS oring the prescription bottle or container.
Special Information
<e a c!osterone blockers exactly as they are prescribed.
High blood levels of potassium associated with aldosterone blockers may cause weakness, lethargy, drowsiness, muscle pain or cramps, and muscular fatigue. Use caution while doing anything that requires intense concentration, like driving or operating machinery.
Do not use a salt substitute or take anything else that is a source of extra potassium, including many multivitamin or supplement products.
People with high blood pressure should not self-medicate with over-the-counter cough, cold, or allergy remedies containing stimulants. These drugs can raise blood pressure effectiveness and have an adverse effect on the heart.
!f you forget a dose, take it as soon as you remember. If it is almost time for your next dose, skip the one you forgot and continue with your regular schedule. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: Animal studies with eplerenone showed no effects on a developing fetus. Spironolactone crosses into the fetal circulation. When your doctor considers either of these drugs crucial, their potential benefits must be carefully weighed against their risks.