Without the details of how much Juvederm was injected and in what area it is difficult to give you good advice. Your doctor would want to know if you didn't get the result you expected.
In terms of degree of result it may take more product to get the result you desire.
Your doctor should be able to tell you if any assymmetry is residual swelling or if you need more product to balance it out.
Regarding product choice, it is unlikely that changing from Juvederm to Restylane will make any difference. Amongst the Hylaronic Acid based products I prefer Juvederm becasue in most patients there seems to be less swelling/bruising and the product lasts longer.

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