My sister is exhibiting symptom of insomnia since taking skinB5 supplements is this normal?

SkinB5 is a nutritional formula and does not have side effects.

SkinB5 Extra Strength Acne Control Vitamins contains potent doses of Vitamin B5 and other Bs, which are naturally energising nutrients! So we advise that she does not take skinB5 close to bed time.

Perhaps she has a body constitution that is also sensitive to many other common food ingredients such as caffeine too.