Maintaining Healthy Mood: A placebo-controlled randomized study demonstrated the excellent efficacy and tolerability of Tryptochron®. The study also showed Tryptochron® to be more effective You cannot add that amount of "Tryptochron® Free sample" to the cart because there is not enough stock (0 remaining). Showing the single result Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Tryptochron® Free sample $0.00 Add to cart