Metformin is not a drug you should be self-medicating with. This drug can lower your blood sugar levels, and if you take the wrong dose, it can cause you to suffer lactic acidosis or just not be very effective at all. Your doctor will tell you how much of the drug you should take to suit your situation.
Generally, the recommended dosage will be anywhere from 500mg-1000mg per day. The drug can come in both an immediate release form and an extended-release form. Which one you take will determine how often you need to take it and when you need to take it.
A slow-release tablet is usually meant to be taken once per day. It is a coated tablet that releases slowly throughout the day- usually over a 24-hour period. This tablet should never be chewed or broken down. That can cause it to release quicker than intended and create serious side effects by giving you too much in a single dose.
The immediate-release tablet would be taken once or twice a day, and it can vary in dosage from 500mg to 850mg.
These are only starting doses, and once your body gets used to it, the maintenance dose will likely be higher. For adults, the average maintenance dose is from 2000mg to 2550mg per day.
These are adult doses, and children will need to take smaller doses. Children should only be given Metformin under a doctor’s orders and adult supervision.
Your doctor will likely want to monitor your progress with the drug, as your blood sugar levels respond to the medication, your doctor will advise changes to your dosage in order to get your blood sugar levels where they need to be. You should not change your dosage on your own, but you should let your doctor know about any side effects that you are experiencing. Those side effects may be cause for a change in dose and may let your doctor know how well your body is acclimating to the drug.