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Most adults start metformin at 500 mg with food, increasing by 500 mg each week toward 1,500–2,000 mg/day if tolerated for PCOS care.

Metformin dosing for type 2 diabetes starts low at 500 mg daily and increases stepwise toward 1,500–2,000 mg only if tolerated and prescribed.

Metformin typically lowers A1C by about 1% and fasting glucose by 20–60 mg/dL, depending on dose and starting levels.

Daily metformin safety depends on form: up to 2,550 mg for standard tablets, up to 2,000 mg for extended-release when kidney function is normal.

For metformin extended-release, the typical ceiling is 2,000 mg daily, raised in 500-mg steps with food under clinician guidance.

In milk chocolate, methylxanthines total about 145 mg per 100 g—about 125 mg theobromine and ~20 mg caffeine.

Daily methylprednisolone needs vary by condition: common oral ranges are 4–48 mg, with higher short courses set by a specialist plan.

Most adults need 2.4 mcg/day of vitamin B12; supplements often range 50–1,000 mcg based on diet, labs, and cause—ask your doctor for a plan.

For methylprednisolone, single oral doses are usually 4–32 mg; higher or IV doses (500–1000 mg) are specialist-only.

Most adults use 200–400 mcg of methylfolate per day; those planning pregnancy follow 400 mcg folic acid unless a clinician advises otherwise.