Are there any supplements that would aid in astral projection?
Hard work. :)
That's the best kind of supplement there is!
There are some products on the market that have been shown to increase dream recall and focus such as AlphaBrain. I have tried it and didn't notice much of a difference but Dream Tea on the other hand was extremely palpable. It is made from Valerian herb and Mugwort. You might be able to find it at an apothecary.
B vitamins but warning, you could be up all night.
Supplements that help memory work very well. Any Nootropics can help but make sure you research, some can have side effects. Anything that causes more blood & oxygen to reach the brain will help. I started taking these to help with my studies but found it made my dreams more lucid:
Gastrodin
Ginkgo
Alpha GPC
EPA & DHA
Bacopa
Lion's Mane (mushroom)
Drink Green Tea
I heard this works but never tried because major side effect is bad headaches which I despise:
Galantamine
There are some herbal extracts I haven't tried yet but it's on my list:
Calea Zacatechichi
Leaf of God
Sinicuichi
Mucuna pruriens