Thanks that would be extremely useful.
Just to start by saying most of my symptoms are about fatigue and brain fog. I don't have a lot of experience of bowel symptoms and pain, which are kind of other clusters of symptoms that I don't get. Having said that:
1. PACING Option number one is pacing, which means in the end you'll be planning every day to stay within your energy budget. There are online resources for this, At the moderate end of this you'll just be saying, since I went out already today, I can't go out this evening. For other people they'll need to be calculating if they have enough energy for cleaning the house. But my top tip here is that TOTAL REST is very valuable during the day. So you take total breaks of 10-30mins maybe a couple of times in the day. Ideally in a quiet dark room on a bed, but at least leaning back in a comfy chair somewhere with your eyes closed doing absolutely nothing. Doing this a few times through the day will increase what you're capable of doing (I know some work environments make it very hard but you can at least do it when you come home first thing). The other thing that helps is regular task-switching, particularly between intellectual and manual tasks.
2. ANTIHISTAMINES The most common easily available drug that seems to help is antihistamines - it brings down inflamation and reduces the tense exhaustion you feel. Loratadine (an H1) is fine to start with, though a mixture of H1 and H2 antihistamines are supposed to be better. You need to be prescribed an H2 but good luck with that until the current medical trial on it is finished. If Loratadine makes you sleepy just take it at night, you'll still get the effects.
3. ANTICOAGULANTS Many people with long covid find an anti-coagulant helps. I was taking turmeric for a long time (in capsules). Now I am taking two enzymes called nattokinase and serrapeptase (Doctor's Best brand) and I think they are better for me, though they required some management to avoid insomnia.
4. ENERGY SUPPLEMENTS People take a variety of things that mostly intervene in cell energy production cycles. I take high-dose Niacin (the flushing variety) which is very common. I also take acetyl l carnitine, which seems to clear my brain fog a bit. A lot of people have had luck with D-Ribose or NAC or CoQ10. As far as I can tell they just intervene in a slightly different place in cell energy production cycles but for some reason we don't understand different things work for different people so you have to play around. Some people just take a high-dose vitamin B combo but it didn't do much for me.
5. MEDITATION If you are getting a tense exhaustion over the course of the day meditation can help, preferably a couple of times a day. But I think you may do this anyway. I would still recommend periods of TOTAL REST besides the meditation.
6. SSRIs - a lot of people with LC have success with them - it is thought that they do more than just lift mood (which can help tbh) but they also have anti-inflammatory effects. (e2a this line)
Option X: Hardcore option of taking Low Dose Naltrexone, which you'll likely have to obtain in nefarious ways and self-administer, and is quite a full-on thing to manage. But it can create a step change in your ability to get things done and is one of the few things that people with ME-CFS say works with any regularity.