Healing Potion could only heal minor internal and external wounds, meaning it would be of no benefit to him, especially since he wanted to heal his injuries at least enough so some exertion wouldn't exacerbate his condition and wouldn't make him groan in pain.
As for Abyssal Leech's Tear…
[Abyssal Leech's Tear: Tear of the Abyssal Leech, has miraculous healing properties. Has the potential to bring a person on the brink of death due to extreme injuries back to life as long as they have a sturdy enough will to withstand the agonizing pain the healing process will bring.]
[Note: The healing effects would end once the person can no longer endure the pain.]
Its description gave him a very bad feeling.
