It is unlikely that a biotin overdose would cause serious problems, as biotin is a water-soluble vitamin and any excess is usually excreted through the urine. However, if you believe you have overdosed on biotin, seek immediate medical attention. Treatment for a biotin overdose (if necessary) will probably include supportive care (treating the symptoms that occur as a result of the overdose).
Overdosing on Biotin: An OverviewBiotin is a water-soluble B vitamin (also known as vitamin B7 or vitamin H). It is not known exactly what to expect from a biotin overdose, but it seems that a biotin overdose is unlikely to cause serious problems in most situations. However, if you happen to overdose on biotin, seek immediate medical attention.
As a water-soluble vitamin, biotin is not particularly dangerous in the case of overdose. Any excess is usually excreted through the urine, without causing any problems.