Actos® Adverse Effects

Actos® Adverse Effects

Many of us would be very surprised to find that a drug can be approved by the FDA yet still have serious—and undisclosed—side effects. The drug Actos, used in the treatment of Type 2 diabetes, is one such drug. Actos works by decreasing the body’s resistance to insulin as a way of controlling blood sugar levels. Actos is currently being used by millions of people across the globe, with sales jumping from around $2.9 billion in 2006 to over $4.3 billion in 2010. Actos has often been prescribed in place of the drug Avandia, which was found to carry significant risks of heart disease and possibly even death in 2007. Actos, which is manufactured by the Japanese pharmaceutical giant Takeda Pharmaceuticals, has recently fallen under scrutiny as well as studies have linked it to an increased risk of bladder cancer as well as correlating it to other serious diseases such as heart attack, stroke and liver failure.

“Minor” Side Effects of Actos
The truth is, all prescription medicines as well as most over-the-counter medications, carry some risk of adverse effects. Fortunately the incidence of serious side effects is rare and for the most part the majority of people have either no side effects or relatively minor ones. Minor side effects associated with Actos include flu-like symptoms, headaches, toothache, sore throat or sinus pain and weight gain. More serious side effects which should prompt the user to seek medical attention include an allergic reaction which includes difficulty breathing or chest tightness, blurry vision, symptoms of heart or liver failure including breathing difficulties, a sudden gain in weight, stomach pains, dark urine, jaundice or vomiting, low blood sugar symptoms such as tremors, anxiety or chills, severe and unusual bone pain and total exhaustion along with feeling weak and shaky.

Actos® and Bladder Cancer

Actos® and Bladder Cancer

Recent studies have shown that patients taking the drug Actos for longer than one year may suffer significantly increased risks of developing bladder cancer. The FDA warnings are being issued on the heels of France and Germany banning the use of Actos, and New Zealand also beginning the process of removing Actos from patient use. Takeda Pharmaceuticals, the Japanese corporation who began manufacturing Actos in 1999, is at the midway point in a ten-year study of the drug’s potentially serious side effects. While the five-year data shows no clear evidence of an overall increased risk of bladder cancer, patients who have taken the drug in the highest dosages or for the longest period of time appeared to be at a much greater risk of developing bladder cancer.

Actos is in a class of drugs known as thiazolidinediones, and is the second medication of its class to be associated with serious side effects. Avandia, the sister-drug of Actos, recently had its use severely restricted due to evidence of increased heart attack risk and even death. When metformin alone no longer works well for patients suffering from type 2 diabetes, doctors typically prescribe a drug such as Actos which increases the body’s insulin sensitivity, controlling blood sugar levels in the process. Type 2 diabetes, when left untreated, can potentially lead to serious health effects such as damage to the retina which can lead to blindness, injury to the kidneys, impairment of the nerves which could lead to amputations of limbs and an acceleration of the development of fat plaques on the interior of the arteries which can potentially lead to blood clots, blockages, cardiovascular disease, stroke and a lessening of critical circulation.

Actos® and Congestive Heart Failure

Actos® and Congestive Heart Failure

The drug Actos, also known as pioglitazone is marketed by Takeda Pharmaceuticals and Eli Lilly for the treatment of Type 2 diabetes. The drug was approved in 1999, and although the manufacturer touts it as a miracle drug which has reduced the number of diabetes cases by as much as 70%, the side effects may far outweigh the benefits. A study done in 2003 by the Mayo Clinic definitively linked Actos to swelling in the feet, lung fluid retention, shortness of breath and congestive heart failure. The most recent studies have strongly indicated that Actos may also be responsible for a number of incidences of bladder cancer in those who have taken the drug in higher dosages or for longer than twelve months.

The American Diabetes Association presented a research report at a meeting in San Diego this past June which reported that Actos enhanced the risk of macular edema by as much as six times, causing thickening and swelling of the retina and leading to blindness. Another study which was reported in the American Heart Association Journal in August, 2010, associated Actos with an increased risk of death due to congestive heart failure. Although the FDA had mandated a black box warning for Actos regarding possible heart failure risks in 2007, the warnings became even more stringent this past June.

Actos® Damages and Typical Settlements

Actos® Damages and Typical Settlements

The Type 2 diabetes drug Actos is one of a class of drugs known as thiazolidinediones and has recently been linked to an increased risk of bladder cancer, liver disease and cardiovascular issues. The FDA felt that the link between heart failure and Actos was serious enough to require increased warnings on the drug packaging concerning congestive heart failure. According to the Washington Post on 8/05/11, the first of what is expected to be literally thousands of lawsuits was filed alleging the use of Actos resulted in bladder cancer. Takeda Pharmaceuticals, a Japanese corporation is the manufacturer of Actos although it was jointly launched with the American company, Eli Lilly. Actos quickly became a top-seller of the giant pharmaceutical corporations, becoming the tenth best-selling drug in the United States in 2008 with sales over 2.5 billion dollars increasing to a staggering 4.3 billion in 2010.

In June of 2011, Takeda halted its sales of Actos in both France and Germany after receiving considerable pressure from health regulators in both those countries. New Zealand is currently in the process of pulling the drug as well. Since June, both the FDA and the European Medicines Agency have prudently issued warnings regarding the potential risk of bladder cancer for those taking the drug, but are allowing the continuation of sales pending further studies. The FDA has, however, warned doctors not to prescribe the drug for those who have a history of bladder cancer or who currently have bladder cancer.

Actos® Side Effects other than Heart Disease and Bladder Cancer

Actos® Side Effects other than Heart Disease and Bladder Cancer

Osteoporosis and Bone Fractures
While many people are now aware of the association between the Type 2 diabetes drug, Actos, and both bladder cancer and heart disease, there are several other quite serious side effects also associated with the drug. For instance, there is strong evidence to suggest that Actos, like its sister-drug, Avandai, may cause osteoporosis and bone fractures among those taking it, most especially in female patients. In one particular randomized trial which studied patients with Type 2 diabetes who were currently taking Actos, an increased occurrence of bone fractures was observed in the female patients and in a follow-up study at nearly three years, almost 5.1% of the females taking Actos had suffered a bone fracture.

Most of the bone fractures were seen in arms and legs, and there was no apparent escalation of fracture occurences among male patients. Because this drug study lasted less than five years, it is strongly believed that a much greater frequency of fractures and osteoporosis would be seen in women taking Actos for longer periods of time. Since men typically have much stronger bones than women, fractures and osteoporosis would probably not have been seen in men who were studied for only a few years. Since broken hipbones happen to be a primary killer of the elderly, seniors should not take Avandia or Actos as their benefits do not appear to outweigh the serious side effects.

Macular Edema
A study presented at the yearly meeting of the American Diabetes Association this past June found that those taking Actos have a three to six times increased risk of developing macular edema. Macular edema causes an eye disease in which the retina swells and thickens and can lead to permanent blindness. Diabetic eye disease is now the most common cause of blindness in those younger than age 65, and although the best way to avoid this particular side-effect of diabetes is by keeping your blood sugar under control, Actos appears to increase the risk of macular edema even though it does control the blood sugar.

Weight Gain
Weight gain also appears to be a side effect of Actos, however it must be noted that there is significant difference between a slow weight gain as the result of the drug and a rapid weight gain which could signal congestive heart failure. Rapid weight gain is any more than five pounds in a week, and should be a reason to consult your physicians immediately. On average, those taking Actos gained from two to six pounds over a period of four months to six months, while those patients not taking Actos lost about three pounds during the same time period.

In patients who were taking both Actos and insulin or other oral diabetes medications, the weight gain increased to between nine and ten pounds on average. Patients taking higher dosages of Actos gained larger amounts of weight than those taking lower doses, however those whose weight gain was related to fluid retention likely suffered more serious cardiovascular problems. Actos has been shown to worsen congestive heart failure or in some cases cause it. A primary initial symptom of congestive heart failure is an unexplained, quick weight gain, so it is important for those taking Actos to monitor their weight regularly.

Liver Disease
Patients who have shown signs of prior liver disease should not take Actos or any other drug in the thiazolidinedione class. These drugs have been definitively associated with significant elevations in liver enzymes, jaundice, liver failure and death due to liver failure. These liver problems have been seen both in long-term and short-term patient use of Actos. Any patients taking Actos should be aware of the potential liver problems, and should report any unexplained nausea, vomiting, fatigue, dark urine or abdominal pain to their physician immediately. If jaundice develops the medication should be immediately discontinued. Those taking Actos who show even a moderate increase in liver enzymes should continue the drug only with their physician’s approval, and with great caution. If Actos use has led to a seriously impaired liver, a liver transplant may be necessary. Conversely, while Actos has been shown to potentially cause liver enzymes to increase to serious levels, there is medical evidence which shows Actos may actually provide beneficial effects in treating fatty liver disease. Several studies have shown that Actos can reduce the liver fats by half in less than half a year.

Other Serious Side Effects
Actos has also been known to cause allergic reactions, blurry vision, easy bruising or bleeding, flu-like symptoms, muscle pain and serious tooth pain and problems. Actos is contraindicated in those who are scheduled for an upcoming surgery or have any type of known allergy to foods, dyes or preservatives. Women who are pregnant or thinking of becoming pregnant, or those who are breastfeeding should not take Actos as it is considered a Pregnancy Category C drug meaning it is not considered safe to take when pregnancy is a possibility. Actos can also pass into breast milk, so should definitely not be taken by women who are currently breastfeeding. Actos can also potentially interact with other prescription drugs as well as non-prescription medications, vitamins and herbal supplements, so it is important that your doctor be aware of everything you take regularly. While bladder cancer and cardiovascular problems are the most serious of the known side effects of Actos, the side effects listed above can also have potentially serious consequences.

European Medicines Agency Scientific Studies on Pioglitazone

European Medicines Agency Scientific Studies on Pioglitazone
The European Medicines Agency released a scientific study on the benefits and risks of the drug pioglitazone, also known as Actos, in January of 2007. This drug is currently used as a single treatment for Type 2 diabetes or in a dual combination form with metformin or sulphonylurea. When used alone, pioglitazone is typically used as therapy for the overweight patient whose Type 2 diabetes is not being controlled through diet and exercise and for whom the drug metformin is inappropriate. The combination drug is most often used in those patients who have insufficient glycemic control despite taking metformin alone or for those patients who have shown a level of intolerance to metformin. The results of the study showed that when pioglitazone was prescribed in conjunction with other anti-diabetic therapies such as insulin, the risk of macrovascular disease was greatly reduced. Macrovascular disease is common in those with long-term diabetes and refers to a disease of the large blood vessels in the body.

Clinical Support for Pioglitazone Application
Evidence was submitted which supported the application of pioglitazone, including four clinical trial reports which studied the safety of the drug when used in conjunction with insulin therapy. The studies were conducted according to prevailing ethical standards, and were random, double-blind, placebo controlled.

First Pioglitazone Study—PNFP-014
Pioglitazone was administered both in 15 mg dosages as well as 30 mg dosages in combination with insulin then compared with using insulin therapy alone. Participants in the studies were between the ages of 30 and 75, and had been on a fixed dose of insulin for at least a month prior to beginning the study. The mean baseline age was 57 years, with an average BMI of 33.6. Nearly 3/4ths of the participants in the study were Caucasian, with slightly more than half being female. Although the baseline systolic blood pressure was minimally higher in the group receiving pioglitazone plus insulin as opposed to the group receiving insulin alone, there were no other baseline variables involved. The patients who received both pioglitazone and insulin showed statistical decreases in the HbA1c levels which measure the average amount of sugar in the blood over a period of three months, and is different from glucose measurements. The HbA1c levels essentially give the physician an indication of how well the diabetes is being controlled.

Benefit-Risk Balance Deemed Positive for Type 2 Diabetics Taking Pioglitazone

Benefit-Risk Balance Deemed Positive for Type 2 Diabetics Taking Pioglitazone

Following safety reviews of the drug pioglitazone—a medicine used in the treatment of Type 2 diabetes—the European Medicines Agency delivered their decision that while there is a marginally increased risk of bladder cancer in those taking the drug, it remains a viable treatment option for some patients. Pioglitazone, also sold under the brand name Actos, is used along with a sensible diet and exercise program to increase the body’s sensitivity to insulin, thereby controlling blood sugar levels.

Reducing Potential Risks
The EMA’s conclusions following extensive study of the drug was that the slight increased risk of bladder cancer could be alleviated through implementation of a more stringent screening of potential patients. Medical professionals are warned against prescribing pioglitazone in any patients with a history of bladder cancer, and to exercise caution when prescribing the drug to the elderly as well. Those patients deemed good candidates for pioglitazone should nonetheless be monitored closely every three to six months to ensure the benefits continue to outweigh the risks.

High Doses, Significant Duration Linked
The results of the controlled epidemiological studies determined that the small risk associated with pioglitazone was seen primarily in those patients who took the drug for significant lengths of time and in the highest doses. Even though the studies showed only a 0.15% increase in risk of bladder cancer this does not mean that those who are prescribed the drug for short term use have no risk at all of contracting bladder cancer.