Can my 6 1/2 month old have yogurt? The gerber baby brand or any brand?

Not recommended. Yogurt is dairy and dairy can be allergenic in children less than one. Many children haven problems. In general I do not recommend any dairy until after one year. Some formulas are cow milk based as well...If you want to try yogurt just pay attention. If baby gets increased congestion, mucous, skin issues, diarrhea, eczema, ear infections after starting ..It is too much....Stop.
Yes. Any brand is fine, however the baby yogurts are a nice portion size, are full fat (good for baby's brain development), and have mild flavors with no unexpected fruit chunks.