The thyroid hormone T3 is also increased by 7-Keto. Some Pro Vita Keto weight loss supplements, such as l-tyrosine, increase fat burning by raising T3, but T3 levels eventually crash with their use. On the other hand, 7-Keto keeps T3 levels high in users, letting them shed pounds continually. Scientists have noted that this rise in T3 remains within the safe, normal range, letting users reap the rewards of heightened T3 while avoiding the downfalls associated with having too much.
https://supplementgear.com/pro-vita-keto/