Is there a decongestant that doesn't cause sleeplessness?

Yes, some decongestants are less likely to cause sleeplessness. For example, phenylephrine is a common oral decongestant that typically has a lower risk of causing insomnia compared to pseudoephedrine. However, individual reactions can vary, so it's best to consult with a healthcare professional for recommendations tailored to your specific needs. Always check product labels for potential side effects.