Victor Kiriakis. Victor Kiriakis is a fictional character on NBC's Days of Our Lives. The role has been portrayed by John Aniston since 1985. His time on the show has been since 1985 with a brief storyline driven absence in 2004 when his character was killed off but found alive on the island of Melaswen.
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Better Health Information from Doctors. Biotin Side Effects. Biotin, known as vitamin B7 or vitamin H, helps maintain the metabolism, hair and nails. While biotin can be very beneficial, taking too much can cause side effects including acne, allergic reactions, miscarriages and interactions with certain medications that can be dangerous.