References. 1  Mahtani KR, et al. Vitamin K for improved anticoagulation control in patients receiving warfarin (review). 2  Ge B, et al. Updates on the clinical evidenced herb-warfarin interactions. 3  Chang C-H, et al. A practical approach to minimize the interaction of dietary vitamin K with warfarin. 4  Hull RD, et al.
Buyer has an Option Period, usually 7 to 10 days, to examine the property and conduct whatever other due diligence buyer deems appropriate. During this Option Period, the ball is entirely in the buyerâs court. If the buyer does not terminate prior to the end of the Option Period, the deal continues unchanged.
Not Normal: Option period longer than 12 days. Also uncommon to increase the option period for a period of over 2 weeks. In residential transactions, option periods are short (averaging 7-12 days) so that the seller does not risk having the property off the market for a long period of time.