K2 also is notorious for not agreeing with many people. Just do a little searching and you will find many anecdotes of K2 causing heart palpitations, muscle pai

K2 also is notorious for not agreeing with many people. Just do a little searching and you will find many anecdotes of K2 causing heart palpitations, muscle pain, bone pain, insomnia. Personally K2 in either MK4 or MK7 form causes me /extreme/ insomnia and /extreme/ bone pain. My experiment with MK7 was particularly horrifying because of the long half life (2-3 days.)