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muscle is surrounded with veins and it immediately flow throughout your body. while medicine being applied to skin takes time cause it needs penetration since our skin have many layers before it reach the part that absorbs the medication to work properly. .

2006-10-10 16:32:31 · answer #1 · answered by salome 5 · 0 0

Injections enter your blood stream.

2006-10-10 23:27:24 · answer #2 · answered by Alex 3 · 0 0

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