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You’ll likely find threonine supplements as 500-milligram capsules that can be taken up to three times daily, depending on your health needs and level of T amino acid deficiency.
The most common L-threonine dose is 500–1,000 milligrams daily. Research suggests that doses up to four grams per day for 12 months are likely safe.
If you use L-threonine to reverse a deficiency or improve symptoms of any health condition, do it under the care of a doctor or health care professional. *