Is there an exact substitute available for a Prazosin 5mg Tablet XL?

Looking for an alternative is completely reasonable, whether it's about availability or cost. Formulations with the same salt, prazosin, at the same strength and extended-release form are generally considered comparable in how they work, though the exact match in coating and release pattern can differ between manufacturers. Rather than swapping on your own, check with your pharmacist or doctor, especially since this medicine affects blood pressure and needs consistent dosing.