Hello, welcome to the forum.
The ThreeLac usually works for only one to three months – if that long, then it’s basically useless. This is because it doesn’t contain enough strains of beneficial bacteria to cure the Candida infestation.
One of the best brands to use is Ultimate Flora Critical Colon BifidoMAX 80 Billion 14-Strain Probiotic. You should purchase a product by the name of Molybdenum as well as Candidate by Native Remedies to take for the die-off symptoms and to protect your liver from the Candida toxins. If you can obtain only one of these, try to purchase the Molybdenum as it offers more protection for the liver. Take the Molybdenum for at least three days before starting the new probiotic.
It will also help to add organic coconut oil to your daily regimen, but do not start it at the same time as the probiotic. After about a week on the probiotic, start with one tablespoon a day of the coconut oil and then raise that by a tablespoon every other day.
Let us know if you have other questions.