Archive for the ‘Pharm’ Category

Fosamax.

Thursday, September 27th, 2007

FOSAMAX 

MSD 

Alendronate Sodium 

Bone Metabolism Regulator 

Action And Clinical Pharmacology: Alendronate is an aminobisphosphonate that acts as a potent, specific inhibitor of osteoclast-mediated bone resorption. Bisphosphonates are synthetic analogs of pyrophosphate that bind to the hydroxyapatite found in bone.

Pharmacokinetics: Absorption: Relative to an i.v. reference dose, the mean oral bioavailability of alendronate in women was 0.7% for doses ranging from 5 to 40 mg when administered after an overnight fast and 2 hours before a standardized breakfast. Oral bioavailability of the 10 mg tablet in men (0.59%) was similar to that in women (0.78%) when administered after an overnight fast and 2 hours before breakfast. See Table I.    A study examining the effect of timing of a meal on the bioavailability of alendronate was performed in 49 postmenopausal women. Bioavailability was decreased (by approximately 40%) when 10 mg alendronate was administered either 0.5 or 1 hour before a standardized breakfast, when compared to dosing 2 hours before eating. In studies of treatment and prevention of osteoporosis, alendronate was effective when administered at least 30 minutes before breakfast.

Bioavailability was negligible whether alendronate was administered with or up to 2 hours after a standardized breakfast. Concomitant administration of alendronate with coffee or orange juice reduced bioavailability by approximately 60%.   

Distribution: Preclinical studies (in male rats) show that alendronate transiently distributes to soft tissues following 1 mg/kg i.v. administration but is then rapidly redistributed to bone or excreted in the urine. The mean steady-state volume of distribution, exclusive of bone, is at least 28 L in humans. Concentrations of drug in plasma following therapeutic oral doses are too low (less than 5 ng/mL) for analytical detection. Protein binding in human plasma is approximately 78%.

Metabolism: There is no evidence that alendronate is metabolized in animals or humans. Excretion: Following a single i.v. dose of 4 alendronate, approximately 50% of the radioactivity was excreted in the urine within 72 hours and little or no radioactivity was recovered in the feces. Following a single 10 mg i.v. dose, the renal clearance of alendronate was 71 mL/min, and systemic clearance did not exceed 200 mL/min. Plasma concentrations fell by more than 95% within 6 hours following i.v. administration. The terminal half-life in humans is estimated to exceed 10 years, probably reflecting release of alendronate from the skeleton. Based on the above, it is estimated that after 10 years of oral treatment with alendronate (10 mg daily) the amount of alendronate released daily from the skeleton is approximately 25% of that absorbed from the gastrointestinal tract.

Mevacor.

Friday, September 21st, 2007

This medicine is an hmg-coa reductase inhibitor (also known as a “statin”) used to lower cholesterol and triglyceride levels in your blood. It may also be used to treat other conditions as determined by your doctor. 

Do not take this medicine if you are also taking gemfibrozil, hiv protease inhibitors (such as ritonavir, lopinavir, or nelfinavir), azole antifungals (such as itraconazole or ketoconazole), macrolide antibiotics (such as erythromycin, clarithromycin, or troleandomycin), or nefazodone. If you are currently taking any of these medicines, tell your doctor or pharmacist before starting to take this medicine. Additional monitoring of your dose or condition may be needed if you are taking amiodarone, “blood thinners” such as warfarin, bosentan, cyclosporine, diltiazem, fluconazole, imatinib, high doses of niacin (1 gram or more per day), fibrates (such as clofibrate or fenofibrate), verapamil, dalfopristin, quinupristin, voriconazole, or st. John’s wort. Do not start or stop any medicine without doctor or pharmacist approval. Inform your doctor of any other medical conditions, including muscle problems, alcohol use, allergies (especially to other “statins”), pregnancy, or breast-feeding. 

Use of this medicine is not recommended if you have a history of liver disease or abnormal liver function test results. Certain medical conditions, including low blood pressure; severe infection; uncontrolled seizures; or serious metabolic, endocrine, or electrolyte problems may increase your risk for side effects that can result in kidney problems while taking this medicine. Contact your doctor if you develop one of these conditions. Contact your doctor or pharmacist if you have any questions or concerns about taking this medicine. 

Follow the directions for using this medicine provided by your doctor. If you take 1 dose daily, take it with your evening meal unless directed otherwise by your doctor. Dosage is based on your medical condition, response to therapy, and use of certain interacting medicines. Consult your doctor or pharmacist for more details. Do not eat grapefruit or drink grapefruit juice at the same time you take this medicine. 

Store this medicine at room temperature, away from heat and light. If you miss a dose of this medicine, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once. 

Do not take this medicine if you have had an allergic reaction to it or are allergic to any ingredient in this product. Laboratory and/or medical tests, including liver function tests and blood cholesterol levels, may be performed to monitor your progress or to check for side effects. Keep all doctor and laboratory appointments while you are using this medicine. Before having any kind of surgery, tell your doctor that you are taking this medicine. Eating grapefruit or drinking grapefruit juice while you are taking this medicine may increase the amount of this medicine in your blood, which may increase your risk for serious side effects. Talk with your doctor before including grapefruit or grapefruit juice in your diet while you are taking this medicine. 

Before you begin taking any new medicine, either prescription or over-the-counter, check with your doctor or pharmacist. 

For women: do not use this medicine if you are pregnant. If you suspect that you could be pregnant, contact your doctor immediately. It is recommended that women of childbearing age use effective birth control measures while taking this medicine since lovastatin may cause fetal harm. It is unknown if this medicine is excreted in breast milk. Do not breast-feed while taking this medicine. 

A side effect that may occur while taking this medicine include constipation. If it continues or is bothersome, check with your doctor. Check with your doctor as soon as possible if you experience rash, yellow skin or eyes, unusual bleeding or bruising, or sore throat. This medicine may infrequently cause muscle damage (which can rarely lead to a very serious condition called rhabdomyolysis). Stop taking this medicine and contact your doctor immediately if you experience muscle pain/tenderness/weakness (especially with fever or unusual tiredness). An allergic reaction to this medicine is unlikely, but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include rash, itching, swelling, dizziness, or trouble breathing. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist.

Zithromax.

Wednesday, September 19th, 2007

Zithromax is used to treat many different types of bacterial infections, such as bronchitis, pneumonia, tonsillitis, skin infections, ear infections, and sexually transmitted diseases.  

Zithromax comes as a capsule, tablet, and liquid to take it orally. It is usually taken once a day for 2-5 days. Take Zithromax exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Shake the liquid well before each use to mix the medication evenly. The capsules and tablets should be taken with a full glass of water. Continue to take Zithromax even if you feel well. Do not stop taking Zithromax without talking to your doctor. Take Zithromax liquid at least 1 hour before or 2 hours after meals. The capsule and tablet may be taken with or without food. If it upsets your stomach, take it with food.  

Before taking Zithromax, tell your doctor if you have liver disease. You may not be able to take Zithromax, or you may require a lower dose or special monitoring during treatment. Zithromax is in the FDA pregnancy category B. This means that it is not expected to harm an unborn baby. Do not take this medication without first talking to your doctor if you are pregnant or could become pregnant during treatment. It is not known whether Zithromax passes into breast milk. Do not take this medication without first talking to your doctor if you are breast-feeding a baby.

   Take the missed dose as soon as you remember. However, if it is almost time for the next regularly scheduled dose, skip the missed dose and take the next one as directed. Do not take a double dose of this medication unless otherwise directed by your doctor.  

If you experience any of the following serious side effects, stop taking Zithromax and seek emergency medical attention: an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives); or liver damage (yellowing of the skin or eyes, nausea, abdominal pain or discomfort, unusual bleeding or bruising, severe fatigue). Other, less serious side effects may be more likely to occur. Continue to take Zithromax and talk to your doctor if you experience nausea, vomiting, diarrhea, or abdominal pain; unusual dizziness, fatigue, or headache; vaginal yeast infection; a rash; or increased sensitivity to sunlight. Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

Ultram.

Monday, September 17th, 2007

This medication is an analgesic used to treat or prevent pain.

Take this medication by mouth as prescribed. It is usually taken every 4 to 6 hours as needed. Use this medication exactly as prescribed. Do not increase your dose, use it more frequently or use it for a longer period of time than prescribed because this drug can be habit-forming. Also, if used for an extended period of time, do not suddenly stop using this drug without your doctor’s approval. When used for extended periods, this medication may not work as well and may require different dosing. Consult your doctor if the medication stops working well.

  

This medication may cause dizziness, weakness, incoordination, nausea or vomiting, stomach upset, constipation, headache, drowsiness, anxiety, irritability, dry mouth, or increased sweating. If any of these effects persist or worsen, inform your doctor. Notify your doctor if you develop any of these serious effects while taking this medication: chest pain, rapid heart rate, skin rash or itching, mental confusion, disorientation, seizures, tingling of the hands or feet, trouble breathing. In the unlikely event you have an allergic reaction to this drug, seek immediate medical attention. Symptoms of an allergic reaction include: rash, itching, swelling, dizziness, breathing trouble. If you notice other effects not listed above, contact your doctor or pharmacist.

Tell your doctor your medical history, especially of: kidney disease, liver disease, seizure disorder, lung disease, history of drug or alcohol dependency, any allergies you may have. Limit alcohol as it may add to the dizziness or drowsiness effects caused by the medication. Because this drug may make you dizzy/drowsy, use caution performing tasks requiring alertness such as driving. This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor. Tramadol is excreted into breast milk. Because the effects on a nursing infant are not known, consult your doctor before breast- feeding.

Tell your doctor of all prescription and nonprescription medications you may use, especially of: carbamazepine, narcotic pain relievers (e.g., codeine), drugs used to aid sleep, antidepressants (e.g., SSRI-types such as fluoxetine or fluvoxamine), MAO inhibitors (e.g., furazolidone, linezolid, phenelzine, procarbazine, selegiline, tranylcypromine), psychiatric medicine (e.g., nefazodone), “triptan”-type drugs, anti-anxiety drugs (e.g., diazepam), sibutramine. Also, report use of certain antihistamines (e.g., diphenhydramine) which are also present in many cough-and-cold products. Do not start or stop any medicine without doctor or pharmacist approval.

If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include: cold and clammy skin, low body temperature, slowed breathing, slowed heartbeat, drowsiness, dizziness, lightheadedness, seizures, deep sleep, and loss of consciousness.

Do not allow anyone else to take this medication. 

If you miss a dose, take it as soon as remembered; do not take it if it is near the time for the next dose, instead, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.

Viagra.

Tuesday, September 11th, 2007

Viagra prevent the breakdown of nitric oxide, a chemical messenger that promotes relaxation and opening of the blood vessels that supply erectile tissue in the penis. Under the influence of nitric oxide, these vessels expand and stay dilated. Increased blood flow makes erectile tissue swell and compress the veins that carry blood out of the penis, resulting in a full erection.

PDE-5 inhibitors do not automatically trigger erections. Sexual stimulation also is needed to start the whole process. The medications enable a more complete response to sexual stimulation.

 Many clinical trials have shown that PDE-5 inhibitors improve erectile function regardless of the underlying cause or causes. Viagra  increase the number and quality of erections and sexual experiences in men with erectile dysfunction due to arteriosclerosis, diabetes, spinal cord injury, depression or the aftereffects of prostate cancer surgery. 

The drugs have slightly different chemical compositions that affect how quickly they work and wear off. Other distinctions — for example, which drug may be best for men of different ages or with different medical conditions — aren’t known. No study has directly compared these three medications. Several factors may affect your choice of medication, including how well your body responds to one drug over another and how long you want the effects of each dose to last. Talk to your doctor about your options and personal preferences to help decide which one of these medications might work for you.

 Although these medications can help many people, not all men can safely take them. PDE-5 inhibitors may worsen certain medical conditions and interact with a number of drugs. Erectile dysfunction medications are dangerous when used with nitrate medications, such as nitroglycerin (Nitro-Dur, others), often prescribed to prevent or treat acute angina (chest pain due to coronary artery disease). Both types of medication dilate blood vessels, and their combined effects can cause dizziness, low blood pressure and loss of consciousness. In rare cases, men using PDE-5 inhibitors have suffered permanent, total vision loss due to nonarteritic anterior ischemic optic neuropathy (NAION). Because NAION and erectile dysfunction share many of the same risk factors, it’s unclear whether the drug or an underlying condition is responsible. If you’re considering an erectile dysfunction drug but have a retinal disorder, such as diabetic retinopathy, see your eye doctor first.

Cialis.

Thursday, September 6th, 2007

Cialis is used to treat erectile dysfunction, also known as impotence, in men. This is when a man cannot get, or keep, a hard erect penis suitable for sexual activity.

 Following sexual stimulation, Cialis works by helping the blood vessels in your penis to relax, allowing the flow of blood into your penis. The result of this is improved erectile function. Cialis will not help you if you do not have erectile dysfunction.

 It is important to note that Cialis does not work if there is no sexual stimulation. You and your partner will need to engage in foreplay, just as you would if you were not taking a medicine for erectile dysfunction.

Do not take Cialis if:

You are currently taking any nitrates or amyl nitrite. Nitrates are medicines used in the treatment of angina pectoris (”chest pain”). Cialis has been shown to increase the effects of these drugs. If you are taking any form of nitrate or are unsure tell your doctor.

If you have had an allergic reaction in the past to tadalafil or any of the other ingredients of Cialis. Some of the symptoms of an allergic reaction may include shortness of breath, wheezing or difficulty breathing; swelling of the face, lips, tongue or other parts of the body; rash, itching or hives on the skin.

Do not take Cialis after the expiry date printed on the pack or if the packaging is torn or shows signs of tampering. If it has expired or is damaged, return it to your pharmacist for disposal.

Tell your doctor if you have allergies to any other medicines, foods, preservatives or dyes. For those who are lactose intolerant, be aware that Cialis tablets contain a small amount of lactose (approximately 200mg for the 10mg tablet and 250mg for the 20mg tablet).

 Carefully follow all directions given to you by your doctor or health care professional. They may differ from the information contained in this leaflet.

Levitra

Thursday, September 6th, 2007

 It is a round shaped orange tablet with strengths of 5mg, 10mg or 20mg. It is an oral tablet, which is swallowed. It is not an aphrodisiac and does not increase sexual desire.  For Levitra to be effective, sexual stimulation is required.

Levitra works by helping to relax the blood vessels in the penis, allowing blood to flow into the penis causing an erection. Levitra will not give a man an erection spontaneously, it will only help a man to get an erection if he is sexually stimulated.

Viagra use and sexual risk among HIV-seropositive men who have sex with men.

Wednesday, March 28th, 2007

BACKGROUND: Viagra may be used medically to treat erectile dysfunction or used recreationally to enhance sexual performance. Little is known about predictors of Viagra use among HIV-seropositive (HIV+) men who have sex with men (MSM), whether it is used with contraindicated substances, and the relationship with sexual risk. METHODS: A community-based sample of 1168 HIV+ MSM (55% men of color) from two large cities in the U.S. completed an A-CASI interview about their sexual practices and substance use in the past 3 months. In univariate analyses, Viagra use was associated with demographics, health status, substance use, and sexual risk. Logistic regression was conducted to predict Viagra use, with significant univariate predictors entered. RESULTS: One in eight men (12%) used Viagra, and many reported using contraindicated illicit substances (inhalants=53%) or HIV medications (indinavir=19%). In logistic regression, predictors of Viagra use were being older (OR, 1.06, 95% CI, 1.03-1.09), having education beyond high school (OR, 2.25, 95% CI, 1.16-4.36), taking HIV medications (OR, 1.98, 95% CI, 1.05-3.72), using any illicit substance (OR, 1.92, 95% CI, 1.16-3.18), using ketamine (OR, 2.82, 95% CI, 1.09-7.32), engaging in unprotected oral insertive intercourse (UOI) with HIV-negative or unknown serostatus non-main partners (OR, 1.88, 95% CI, 1.15-3.09), and engaging in unprotected anal insertive intercourse (UAI) with HIV-positive non-main partners (OR, 2.39, 95% CI, 1.33-4.31). CONCLUSIONS: Many HIV+ MSM used Viagra, particularly substance using men. Use of contraindicated illicit and prescribed medications was common. Viagra use was associated with UOI (but not UAI) with non-main partners who might be at risk of contracting HIV. With HIV+ non-main partners, Viagra users were more likely to engage in UAI. Providers should educate HIV+ Viagra users about potential interactions with other substances and provide counseling to reduce HIV and STD risks. Publication Types:

  • Meeting Abstracts

Keywords:

  • Acquired Immunodeficiency Syndrome
  • HIV Infections
  • HIV Seropositivity
  • Humans
  • Male
  • Piperazines
  • Sexual Behavior
  • Substance-Related Disorders
  • United States
  • sildenafil

Junior doctors protest over jobs

Monday, March 19th, 2007

Junior doctors have marched in London and Glasgow to protest against reforms to their medical training. They claim their careers are being held back by a “badly-organised” online application system and too few specialist jobs to apply for.

Addressing the London protest, Tory leader David Cameron said the online system was an “utter shambles”.

Health Minister Lord Hunt admitted there had been “teething problems” with the system but promised to fix them.

‘Absolute disaster’

The online questionnaire-based application, called Modernising Medical Careers (MMC), was designed to speed up the process for placing junior doctors in specialist jobs.

But a catalogue of complaints has emerged.

Doctors say the forms are badly worded, do not ask pertinent questions, do not allow them to set out relevant qualifications and experience, and have no facility for attaching a CV.

The result, they say, is that the best candidates are not being selected for the right jobs.

Moderate drinking may benefit elderly men

Tuesday, March 6th, 2007

Older men who drink moderate amounts of alcohol may function better physically than either those who abstain completely or those who abuse alcohol, a new study suggests.

Moderate drinkers tend to be healthier in general than teetotalers or problem drinkers, Dr. Peggy M. Cawthon of California Pacific Medical Center in San Francisco and colleagues note. There is also evidence that moderate drinking may reduce inflammation.

Cawthon and colleagues compared functional limitations, physical performance and drinking history for 5,962 men aged 65 or older who were classified into 5 categories. Men who consumed 5 or more drinks on most days were classified as having a history of sustained excessive drinking, while those who responded positively to a questionnaire used to diagnose alcoholism were classified as problem drinkers.

Moderate drinkers were those who consumed between 7 and 20 drinks per week and heavy drinkers were men who consumed 21 or more drinks weekly. Abstainers made up the final group.

Moderate drinkers scored about 3 percent to 5 percent better on tests of physical function than the abstainers, the researchers found, while scores for heavy drinkers were about the same as those for the abstainers.

The abstainers were the most likely to report physical limitations to activities of daily living like walking, climbing stairs, and doing heavy housework. The heavy alcohol users were only slightly less likely than abstainers to have these limitations.

Low-moderate users, meaning men who drank between seven and 14 drinks a week, were the least likely to have functional limitations, and were at 38 percent lower risk of having these problems than abstainers.

The researchers call for more detailed studies to determine how alcohol use over time affects how functional status changes with age.