Both pills are the same except Loestrin 24 contains 4 more active tablets.
In the Loestrin 24 there are 24 active tablets and 4 inactive tablets.
Some inactive tablets may contain iron.
In the Loestrin 20 there are 21 active tablets and 7 inactive tablets.
The Loestrin 24 is probably a safer option because you take active tablets for longer.
Talk with your doctor if you would rather take the L-24 again.
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