Earlier tonight Similac announced that they are recalling many different types of their formula.

Since then, Similac's website has been unavailable due to the increased traffic, and their call center has been experiencing extreme delays.

You should continue to try to reach these official sources, but in the meantime, we're compiling as much accurate information about the recall that we can find for you.

Read on for more details ...

What ISN'T recalled: Liquid formula (ready-to-eat) is NOT recalled. "Specialty" formulas (Alimentum, Elecare, Neosure, Human Milk Fortifier) are also NOT recalled.

What IS recalled: All (or nearly all) formulas with a "T2" in the lot number. Some formulas with a "RB" in the code are recalled, but not all. UPDATE: A Similac representative replied to this post and has let us know that all Similac formula in the rectangular plastic tub (top picture, above) is recalled. For cans, you will need to keep trying their website to see if your lot number is included in the recall.

How to find your lot number: Whether you have a plastic container or a metal can, the lot number is printed on the bottom. It's an 8- to 10-digit set of numbers and letters.

What to do now: If you have a recalled formula, you should not use it anymore. You will need to buy new formula for your baby. If you're unsure whether your formula is recalled, it's better to be safe than sorry -- get new formula and use that until you're certain.

Once Similac's website and call center are back online, you can contact them about getting a refund and returning the product.

Please post in the replies if you have more information or corrections.

UPDATE: Because of the high volume of calls, Abbott/Similac added another number to help you with questions/return information -- 888-376-2054 -- call anytime, 24/7.