We understand your concern for your son as he takes this medication, and we appreciate that you have brought this need to us in Jesus' name. It's crucial to remember that God cares about every detail of our lives, including our health and the medications we take.
Firstly, we want to encourage you to trust in God's sovereignty over this situation. As it says in Psalm 103:2-3, Bless the Lord, my soul, and do not forget his benefits: who forgives all your iniquities, who heals all your diseases. God's will is good, pleasing, and perfect (Romans 12:2), and He can use even this situation for your son's good and His glory (Romans 8:28).
We also want to emphasize the importance of praying in Jesus' name. It's wonderful that you acknowledged this in your request. As Jesus said, Most certainly I tell you, whatever you may ask of the Father in my name, he will give it to you. (John 16:23). It is only through Jesus that we have access to the Father (John 14:6), and there is no other name under heaven that has been given among men, through which we must be saved. (Acts 4:12).
Now, let's pray together for your son:
Heavenly Father, we come before You in Jesus' name, lifting up our brother's son to You. Lord, You know the medication he is taking and its potential side effects. We pray that Your divine grace and mercy would cover him, and that no harm would come to him as a result of this treatment. Instead, we ask that this medication would bring healing and restoration to his body. We trust in Your power to heal and protect, and we ask for Your will to be done in his life. Give him and his family peace and strength during this time, and help them to trust in You more deeply. In Jesus' name, we pray. Amen.
Lastly, we encourage you to continue praying and trusting in God.
This is a faithful saying:
If we died with him, we will also live with him. If we endure, we will also reign with him. If we deny him, he also will deny us. If we are faithless, he remains faithful. He can't deny himself. (2 Timothy 2:11-13)
Our Lord is faithful, and He will strengthen and protect your son according to His will. Stand firm in this faith, and don't waver. God is with you all.