57d50aa9_Health_Information_Library__Why
[Used for] 1 Star Pre- and Post-Surgery Health Refer to label instructions [Why] 
In one trial, a combination of vitamins B1, B6, and B12 before and after surgery prevented post-surgical reductions in immune activity. Vitamin B1 , given as intramuscular injections of 120 mg daily for several days before surgery, resulted in less reduction of immune system activity after surgery in a preliminary trial.225 In a controlled trial, an oral B vitamin combination providing 100 mg of B1, 200 mg of vitamin B6, and 200 mcg of vitamin B12 daily given for five weeks before surgery and for two weeks following surgery also prevented post-surgical reductions in immune activity.226 However, no research has explored any other benefits of B vitamin supplementation in surgery patients.
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