It goes on to say that they're changing my prescription to "a very similar drug".

It is reasonable to expect similar new drugs in the future.

To be sure, other competitors are working on similar drugs.

"But it's not an impossible case to win for someone who had absolutely nothing to do with steroids or similar drugs," he said.

And the drug is more likely to cause a serious muscle-weakening disease than similar drugs, he said.

They will make it easier for other companies with similar drugs to charge higher prices.

Ritalin and similar drugs must generally be taken more than once a day.

The results appear to be an advance on findings reported in September for a similar drug.

However, proponents point to the cost benefits of market competition between similar drugs.

I started him on a similar drug, and he, too, had an excellent response.