Edibles are a great way to access medical marijuana. They keep well and can be frozen and consumed at a later date. As with all edibles it is important to remember 2 things. Firstly all edibles take a while to reach their full effect. It can take from 30 minutes to start to 2 hours to achieve maximum effect.
Secondly, a little is always best. Start with a 1/4 cookie and see how you respond. Wait an hour or 2 and add more if needed. The effects will last several hours.