How soon after taking minoxidil will my symptoms improve?

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If you are using minoxidil for hair loss, it will likely take at least four months, and possibly as long as a year, before you see results. If you stop using minoxidil, your new hair growth will likely reverse within just a few months.

If you are taking minoxidil for high blood pressure, the drug may start working in just a few days and should be effective within a few weeks. Call your doctor if there is no change in your condition after several weeks or if your condition worsens.