Synflex side effects

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Synflex is a widely used osteoarthritis pain reliever and inflammation reducer, available for both humans and animals. Comprised of liquid glucosamine, naproxen, and a series of anti-arthritic ingredients, Synflex is used to quell the stiffness and discomfort associated with arthritis.

Although side effects are extremely rare, it is always important to take precautions when beginning any medical treatment.

Allergic Reactions to Chitin

When taking Synflex, individuals who are allergic to shellfish should pay special attention to any arising symptoms that mirror their allergy. In rare cases, sufferers of this allergy may be experiencing a reaction to the carbohydrate chitin present in crustaceans, rather than more common allergy-inducing proteins. Glucosamine, the most prominent ingredient in Synflex, is derived from chitin. Contact a medical professional if any symptoms appear.

Individuals with Diabetes

The high content of glucosamine in Synflex can dramatically increase the amount of glucose in your blood. Users with diabetes must check their blood glucose levels frequently to avoid dangerous fluctuations in blood sugar. Potentially harmful consequences of high blood sugar (also known as hyperglycaemia) include rapid and extreme thirst, increased urination, nausea, headache, dry skin and blurred vision.

Gastrointestinal Problems

Synflex contains large amounts of the active ingredient naproxen, which is sometimes associated with gastrointestinal illness. Individuals with a history of gastric issues, irritable bowel syndrome or cirrhosis of the liver may be at risk for intestinal bleeding or ulceration. The risk is increased in elderly users and those taking a very high daily dose of the product.

Cardiovascular Risk

Naproxen is an anti-inflammatory, non-steroidal ingredient of Synflex, and although the risk is very low, similar drugs have been associated with a slight increase in the risk of heart attack, stroke, cardiovascular disease and heart failure. The risk increases in individuals who smoke. If you have a history of heart disease, it is recommended that you consult your physician before taking Synflex.

Recommended Daily Dosage

According to, the recommended daily dosage of Synflex for humans is 7.09gr. (or 1.5 tsp) per day. For maximum effectiveness, the manufacturer of Synflex suggests that those beginning a glucosamine regimen might want to double the dose to 14.2gr. during the first 10 days. Dosages can be taken once a day or split into morning and evening. While liquid glucosamine is considered safe, women who are pregnant or lactating should first consult a physician.