I have never had B6 toxicity, and I'm not sure you do at this point, it's something you still need to talk to the docs about, but as to this question, B vitamins come singly or in a complex. The complex, whether it's a stress complex or a basic complex, will always contain B6 between a good complex will try to balance the Bs. So the question for you is, what are you trying to accomplish by taking B vitamins? For example, many take B12 sublingually or even in shots for quick energy, not because they need it. Some take it because their body needs it because they're vegan or vegetarian and it's hard to get in plant food. In short, there would be a reason for taking it based on what it does. What are your needs you're trying to fulfill, because if you start to take them singly, you'll need to pick and choose and also take care not to take so much of one it might put others out of balance. For example, B6, B12, and folate work together in a particular balance to control homocysteine, a suspected factor in heart disease. Pregnant women take folate. Those with methylation problems might need particular forms of B12, folate and B6 to metabolize them because their bodies can't. B6 is usually taken alone by those who are trying to deal with emotional and nerve problems. Inositol and choline, generally included in B complexes, help with the brain and possibly mood and are two others that are in balance with one another. This is something you probably want to do some homework on, but to answer this would require anyone to know what it is you're trying to deal with by supplementing. I take a Stress B complex because I have anxiety problems. That's an example.
In general, the content of vitamin B6 in fruits is relatively low, except for avocados and bananas. The vitamin B6 content of these two fruits will be slightly higher. If you want to add vitamin B6, you can eat these two fruits as appropriate.
Vitamin B6 is found in a wide variety of foods, including: pork, poultry, such as chicken or turkey, fish, bread, wholegrain cereals, such as oatmeal, wheatgerm and brown rice, eggs, vegetable, soy beans, peanuts, milk, potatoes, some fortified breakfast cereals, etc. Not hard to find. But the issue here is usually supplementation, when someone is trying to treat some condition, such as mood problems. That's usually, absent a genetic problem, where people have the neuropathy problem. Anyone who eats a varied diet isn't going to be deficient in it, the issue is metabolism of it, but they aren't going to have an excess of generally from food either, as it's a water soluble vitamin that the body when working properly will wash out of the system quickly if it can't use it. Peace.