An older version of a drug is a drug that provides the same therapeutic benefit as a newer drug. While it may not contain the same ingredients, and may not do everything a newer version does, it may still be effective for your particular situation.
Advantages of an older drug:
- Older versions of a drug are usually less expensive than newer versions.
- Information about the drug is likely to be reliable. Older versions of a drug have the advantage of having been tested for a longer period of time - including extensive use.
- Experience has been a good teacher about how to deal with side effects.
There are no apparent disadvantages to using an older versus a newer drug. The key is whether it is effective for your particular health situation.