What can I give a newborn for gas?

Try Colic Calm.  It is a 100% natural homeopathic, fast acting, and even treats hiccups.  Also it is FDA regulated.

You can read testimonials and gather more info at the the link provided.

http://www.coliccalm.com/

By the way, the following is FYI.  In case you were not aware:

McNeil Consumer Health, the makers of Tylenol and Pediacare is voluntarily recalling their infant cough and cold products. This follows a recent statement from the FDA about children's cold medicines that "questions have been raised about the safety of these products and whether the benefits justify any potential risks from the use of these products in children, especially in children under 2 years of age."
Included in the recall are:

• Concentrated TYLENOL Infants' Drops Plus Cold
• Concentrated TYLENOL Infants' Drops Plus Cold & Cough
• PediaCare Infant Dropper Decongestant
• PediaCare Infant Dropper Long-Acting Cough
• PediaCare Infant Drops Decongestant (containing pseudoephedrine)
• PediaCare Infant Dropper Decongestant & Cough
• PediaCare Infant Drops Decongestant & Cough (containing pseudoephedrine)

Before you give your infant a medication, try holding your baby gently, but securely, over your arm in a face-down position (this is known as the "gas hold"). If this doesn't help, you can always try

Some Home Remedies for Gas