It depends on how long the cycle is. Tbol gains slow down after 5 weeks. If you run a 5 week cycle supplements may be the only PCT you need.
If it is longer than that I recommend HCG followed by clomid. Most people do not recommend HCG following an oral only cycle but I have done blood work after oral only cycles and my test levels get hammered just as bad as an injectable cycle.
Take 3 to 4 shots of HCG, 1000ius, first one three days after your lost oral dose, and then every four days after that. 5 days after the HCG shot take clomid 50mg ED for 3 weeks. This gets my levels back to normal very effectively. The last three times I have gotten blood work one month after my PCT my test levels were all in the middle of the normal range which is good for someone like me close to 40 years old.