Hi Sherrie,

I honestly don't have an answer for your question.  But I did look up the medication guide for Betaseron in which I read this:

How should I take Betaseron?
Betaseron is given by injection under the skin (subcutaneous injection) every other day. Your injections should be approximately 48 hours (two days) apart, so it is best to take them at the same time each day, preferably in the evening just before bedtime.

You may be started on a lower dose when you first start taking Betaseron. Your doctor will tell you what dose of Betaseron to use, and that dose may change based on how your body responds. You should not change your dose without talking with your doctor.

If you miss a dose, you should take your next dose as soon as you remember or are able to take it. Your next injection should be taken about 48 hours (two days) after that dose. Do not take Betaseron on two consecutive days. If you accidentally take more than your prescribed dose, or take it on two consecutive days, call your doctor right away.

Anytime you are concerned about something, please don't hesitate to call the doctor's office and/or the pharmacy.  That is one of many reasons they are there.