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Most adults treated with azithromycin for genital chlamydia receive a single 1 gram dose, but the exact plan comes from a clinician.

No official upper limit exists for vitamin B12, and daily doses up to 1,000 mcg are usually safe for healthy adults.

Most adults take AZO for UTI pain as two tablets three times daily with food for up to two days, unless a doctor gives different instructions.

Most adults can take Azo at label doses for up to two days; more than that needs direct advice from a health professional.

Most adults need 2.4 mcg of vitamin B12 daily, and higher doses rarely boost weight loss on their own.

Most adults need about 2.4 micrograms of vitamin B12 a day, and daily supplements up to 1,000 micrograms are usually well tolerated.

Most adults use 2.4–1,000 mcg of vitamin B12 a day for energy needs, with higher doses best chosen together with a doctor when deficiency is possible.

Most adults only need about 2.4 mcg of vitamin B12 per day, while much higher supplement doses are usually safe when guided by a health professional.

Most people need 350–500 micrograms of vitamin B12 per day after a gastric sleeve, adjusted over time based on blood tests and advice from their bariatric team.

A 3000 mcg vitamin B12 supplement contains 3 mg of B12, far above daily needs yet usually tolerated because the body absorbs and keeps only a small share.