Taking care of my greened out SO

My SO is greening out. I’ve never gone thru it as bad as him and have never helped anyone who has. Any advice that may help us get thru this a little easier? I stay with him at all times other then to get him water, he’s puked a few times, he feels like his limbs are very heavy, and now he’s just like really tired but still feeling like he may puke and shouldn’t walk. I’ve given him a CBD gummy and make him sip water. When I get his next drink it will be gatoraid. We do not have peppercorns. I’m very thankful for any help!

Update- lemon juice, oranges and some Gatorade set him right. Thank you for your suggestions and help!