NTP-Metformin: Uses, Side Effects and Dosage

ABOUT THIS MEDICATION

What the medication is used for:

NTP-Metformin (metformin hydrochloride) is used to treat Type II diabetes which cannot be controlled by diet, exercise and weight reduction.

What it does:

NTP-Metformin is used to treat type 2 diabetes. People with type 2 diabetes are not able to make enough insulin or respond normally to the insulin their bodies make. When this happens, sugar (glucose) builds up in the blood. This can lead to serious medical problems including kidney damage, amputations, and blindness. Diabetes is also closely linked to heart disease. The main goal of treating diabetes is to lower your blood sugar to a normal level.

High blood sugar can be lowered by diet and exercice, by a number of medicines taken by mouth, and by insulin shots. While you take your diabetes medicine, continue to exercices and follow the diet advised for your diabetes, by your doctor.

No matter waht your recommended diabetes management plan is, studies have shown that maintaining good blood sugar control can prevent or delay, complications of diabetes, such as blindness.

NTP-Metformin helps control your blood sugar although the mode of action is not fully understood, it is believed to help your body respond better to the insulin it makes naturally by:

$ decreasing the amount of sugar your liver makes, and $ decreasing the amount of sugar your intestines absorb.

When it should not be used:

Do not take NTP-Metformin if you

$ have unstable and/or insulin-dependent (Type I) diabetes

mellitus,

$ have metabolic acidosis (including diabetic ketoacidosis,

history of ketoacidosis or lactic acidosis-too much acid in the blood),

$ have congestive heart failure,

$ drink a lot of alcohol,

$ have liver or kidney problems,

$ are going to have x-ray procedure with injection of dyes, $ are stressed, have severe infections, are experiencing

trauma, prior to surgery or during the recovery phase, $ suffer from severe dehydration (have lost a lot of water

from your body)

$ are hypersensitive or allergic to metformin hydrochloride or any ingredient in the formulation or component of the container

$ are breastfeeding

$ are pregnant or planning to become pregnant $ have cardiovascular collapse (abrupt failure of blood circulation) or cardiorespiratory insufficiency.

What the medicinal ingredient is:

The medicinal ingredient for NTP-Metformin is metformin hydrochloride

What the non-medicinal ingredients are:

NTP-Metformin tablets contain the following non-medicinal ingredients: Crospovidone, hydroxypropyl methylcellulose, magnesium stearate, maltodextrin, polyethylene glycol pregelatinised maize starch and povidone. This is a complete list of all non-medicinal ingredients.

What dosage forms it comes in:

NTP-Metformin is formulated into tablets of 500 mg and 850 mg strengths for oral administration.

WARNINGS AND PRECAUTIONS

Serious Warnings and Precautions

NTP-Metformin may rarely cause a serious, life-threatening condition called lactic acidosis (see section Lactic Acidosis below).

You should not drink a lot of alcohol if you take NTP-Metformin (see section Lactic Acidosis below).

Lactic Acidosis

NTP-Metformin may rarely cause a serious, life-threatening condition called lactic acidosis.

You should not take NTP-Metformin due to greater risk for lactic acidosis if you:

$ have kidney problems

$ are 80 years or older and you have NOT had a kidney function tested

$ are taking medication for heart failure

$ are seriously dehydrated (have lost a lot of water from your body)

$ have heart disease

$ have liver disease

$ drink a lot of alcohol (regularly drink alcohol or sometimes drink a lot of alcohol, binge drinking)

$ have an x-ray procedure with injection of dyes (contrast agents)

$ prior to surgery or during recovery phase

$ develop a serious medical condition, such as heart attack, severe infection, or a stroke

Signs and symptoms of lactic acidosis include: discomfort, muscle pain, difficult or fast breathing, extreme tiredness, weakness, upset stomach, stomach pain, feeling cold, low blood pressure or slow heartbeat.

If any of the above side effects occur, consult your doctor immediately.

Tell your doctor if you are pregnant or plan to become pregnant. NTP-Metformin should not be used during pregnancy and insulin treatment is recommended during pregnancy. Talk with your doctor about your choices. You must not take NTP-Metformin if you are nursing a child.

Tell your doctor of any other medical condition including: vitamin B12 deficiency or anemia, excessive alcohol use, allergies.

Do not start or stop any medicine without doctor or pharmacist approval.

INTERACTIONS WITH THIS MEDICATION

Some drugs may interact with NTP-Metformin. Careful monitoring is advised. Tell your doctor if you are taking:

$ other diabetes drugs such as glyburide

$ furosemide

$ nifedipine

$ cationic drugs (e.g., amiloride, digoxin, morphine,

procainamide, quinidine, quinine, ranitidine, triamterene, trimethoprim, and vancomycin)

$ other drugs tend to produce hyperglycemia (high blood

sugar) and may lead to a loss of blood sugar control. Some example of drugs that can increase the blood sugar include:

• Thiazide and other diuretics (water pills)
• Corticosteroids
• Phenothiazines
• Thyroid products
• Estrogens or estrogens plus progestogen
• Oral contraceptives
• Phenytoin
• Nicotinic Acid
• Sympathomimetics
• Calcium channel blocking drugs
• Isoniazid
• Beta-2-agonists

$ ACE inhibitors drugs may lower blood glucose and the

combination with NTP-Metformin should be carefully monitored.

Before using any drugs or herbal products, check with your doctor or your pharmacist.

PROPER USE OF THIS MEDICATION

Usual dose:

Your doctor will tell you how much medicine to take and when to take it. Follow the directions provided by your doctor for using this

medicine. Taking this medicine with food will decrease symptoms such as nausea and vomiting.

Overdose:

In general, an overdose may lead to increased symptoms as described under ASIDE EFFECTS AND WHAT TO DO ABOUT THEM@ including stomach discomfort, nausea, vomiting, diarrhea, drowsiness, weakness, dizziness, malaise and headache.

A serious, life-threatening condition called lactic acidosis may also occur (see WARNINGS and PRECAUTIONS, Lactic Acidosis).

If you have taken too much NTP-Metformin, immediately see your doctor, contact the poison control or go to the nearest hospital emergency department. Do this even if there are no signs of discomfort or poisoning.

Missed Dose:

If you forget to take NTP-Metformin tablets, do not take a double dose to make up for forgotten individual doses. Take the next dose a the usual time.

SIDE EFFECTS AND WHAT TO DO ABOUT THEM

Common side effects of NTP-Metformin include

$ diarrhea

$ nausea

$ upset stomach

$ abdominal bloating

$ gas

$ loss of appetite

These side effects generally go away after yout take the medicine for a while. Taking your medicine with meals can help reduce these side effects. Tell your doctor if the side effects bother you a lot, last for more than a few weeks, come back after they=ve gone away, or start later in therapy. You may need a lower dose or need to stop taking the medicine for a short period or for good.

NTP-Metformin rarely cause hypoglycemia (low blood sugar) by themselves. However, hypoglycemia can happen if you do not eat enough, if you drink alcohol, or if you take other medicines to lower blood sugar.

Lactic Acidosis. In a rare cases, NTP-Metformin can cause a serious side effects called lactic acidosis. This is caused by a buildup of lactic aci in your blood. This buildup can cause serious damage. Lactic acidosis caused by NTP-Metformin is rare and has occurred mostly in people whose kidneys were not working normally. Although rare, if lactic acidosis does occur, it can be fatal in up to half the people who develop it.

It is also important for your liver to be working normally when you take NTP-Metformin. Your liver helps remove lactic acid from your blood.

Make sure you tell your doctor before you use NTP-Metformin if you have kidney or liver problems.

You should also stop using NTP-Metformin and call your doctor

right away if you have signs of lactic acidosis. Lactic acidosis is a medical emergency that must be treated in a hospital.

If your medical condition suddenly changes, stop taking NTP-

Metformin and call your doctor right away. This may be a sign of

lactic acidosis or another serious side effect.

This is not a complete list of side effects. For any unexpected effects while taking NTP-Metformin, contact your doctor or pharmacist.

HOW TO STORE IT

Store in a dry place between 15EC-30EC in well closed containers. Protect from light. Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.

Keep out of reach of children.

REPORTING SUSPECTED SIDE EFFECTS

To monitor drug safety, Health Canada collects information on serious and unexpected effects of drugs . If you suspect you have had a serious or unexpected reaction to this drug you may notify Health Canada by:

toll-free telephone: 866-234-2345 toll-free fax 866-678-6789

By email: cadrmp@hc-sc.gc.ca

By regular mail:

National AR Centre

Marketed Health Products Safety and Effectiveness Information Division

Marketed Health Products Directorate

Tunney=s Pasture, AL 0701C

Ottawa ON K1A 0K9

NOTE: Before contacting Health Canada, you should contact your physician or pharmacist.

MORE INFORMATION

This document plus the full Product Monograph, prepared for health professionals can be found by contacting the sponsor, NT Pharma Canada Ltd. at:

1-800-268-4127 ext. 5005 (English); 1-877-777-9117 (French) or druginfo@tevacanada.com

NT Pharma Canada Ltd.

5691 Main Street

Stouffville, Ontario

L4A 1H5, Canada

Last revised: January 6, 2011.