I have seen muscle soreness and/or muscle cramps mentioned by some users of Met, especially when first starting it, on this board and on the net. Here is a possible explanation for it: Recent research suggests that Metformin may stimulate glucose uptake by muscles and inhibit glucose production by the liver by activating an enzyme, AMP-activated protein kinase which is present in muscle, liver, and heart cells. This enzyme is usually activated when exercise has burnt off cellular energy stores. So in a way, Metformin seems to trick the body into thinking it has exercised. This may be why it causes a small amount of weight loss and also results in elevated levels of lactate--the substance that makes your muscles ache the day after an exercise session.
You probably already know there is a very rare condition called lactic acidosis that can be a consequence of Met, which causes severe weakness in the arms or legs, difficulty breathing, abdominal pain, nausea and vomiting, and abdominal pain. This happens when the kidneys aren't working well to begin with, because Met is cleared through the kidneys. If too much Met builds up in the body because the kidneys aren't functioning well enough to clear it, then too much lactic acid can build up. But this is very rare, and as long as your doctor did the appropriate blood tests before starting you on Met, that shouldn't be a concern.
Drinking lots of water to avoid dehydration, and taking potassium supplements, may help. Many people find that the muscle soreness/cramps decreases or goes away over time.
As far as your blood sugar question, did you repeat the test to make sure that was an accurate reading? False readings are so common with home blood glucose meters, and can be a result of something as simple as not washing your hands first or not getting a sufficient drop of blood. Also, did you wait at least two hours after eating before taking it?
Linda
__________________ dx pcos 1984, type II diabetes 2001, also hypertension
Met 2000mg since 2001, started Glucophage XR 4/22/04, then switched to Met ER 6/04; also: multi, Vit. C, Vit. E, B12/folic acid combo, fish oil & borage oil combo, garlic capsules, cinnamon, Vitex, calcium with magnesium/zinc, biotin, CoQ10, selenium,iron
Other meds: Verapamil and Altace(for blood pressure)
Started laser hair removal 7/29/03, completed 3/04 (it works!)
UAE for fibroid 3/24/03 and 3/16/04 |