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The abdomen (except within 2 inches of the navel) is often preferred for self-injection due to ease of access
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However, contact a healthcare provider immediately if you experience severe abdominal pain that does not resolve, persistent vomiting that prevents hydration, signs of allergic reaction (hives, difficulty breathing, swelling of face or throat), or vision changes
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Confirm concentration when needed: a clear-looking solution does not by itself prove full dissolution or the correct concentration
[Google Scholar] 26.Quadros E.M., Matthews D.A., Wise I.J., Linnell J.C
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