Taking things, even vitamins and supplements, is still traditional-medicine-way of thinking.
In other words, there exists a problem, and so we take things specifically to address those problems.
Then there is wholistic medicine, which take the entire body/mind/spirit into account.
Naturopathic doctors (some,not all) know that taking vitamins in certain amounts can cause a deficiency in other vitamins. They also know that vitamins and herbs can affect you hormonally.
You cannot treat one thing without affecting to some degree all other things.
An unexpected period,especially one that is intense, is usually a sign of hormonal imbalance, NOT a sign of candida detox. I take biotin only occasionally, and never more than 1000mgs, without it effecting me in away I can measure.
Consider that your dosage may inappropriate for you personally, while it may be okay for someone else.
Not a fan of Threelac, so I cant comment there.