yes, fly control supplements have garlic in them usually, NAF is the best in this country. The benefits outway the dangers in my opinion, there are many dietry dangers that effect horses, that worry me far more. Too much of ANYTHING is bad for a horse, including grass, should we stop feeding them that so they don't get laminitis?
Anaemia is easy to treat, I've had it, just needed to change my diet, you just need more iron and vitamins in your diet! Which my horse gets from his cubes :)
Thanks for the advice x