Been taking flexoril for lumbar issue. doc gave me robaxin today, but it is not working. took last robaxin at 10. can i take flexoril now?

AdiviseDoNotMix: Robaxin and Flexeril both are muscle relaxants.We can not recommend mixing these two.We don't know what dose of Robaxin you are taking.The dose is 750mgm 4 times a day for two to four days and then 500 mgm 4 times aday.And flexeril is 5 to 10 mgm three times a day.It is advised not to mix both.Check your dosage if you are taking a proper dose or call your doctor if you can go back to flexeril