The half-life of Dianabol is only about 3 to 4 hours, a relatively short time. This means that a single daily dosage schedule will produce a varying blood level, with ups and downs throughout the day. The user likewise has a choice, to either split up the tablets during the day or to take them all at one time. The usual recommendation has been to divide them and try to regulate the concentration in your blood. This however, will produce a lower peak blood level than if the tablets were taken all at once, so there may be a trade off with this option. The steroid researcher Bill Roberts also points out that a single-episode dosing schedule should have a less dramatic impact on the hypothalamic-pituitary-testicular axis, as there is a sufficient period each day where steroid hormone levels are not extremely exaggerated. I tend to doubt hormonal stability can be maintained during such a cycle however, but do notice that anecdotal evidence often still supports single daily doses to be better for overall results. Perhaps this is the better option. Since we know the blood concentration will peak about 1.5 to 3 hours after administration, we may further wonder the best time to take our tablets. It seems logical that taking the pills earlier in the day, preferably some time before training, would be optimal. This would allow a considerable number of daytime hours for an androgen rich metabolism to heighten the uptake of nutrients, especially the critical hours following training.