The ingredients in Superthrive are a trade secret. Though it is widely understood to be a collection or organic and chemicaly derived vitamins, amino acids and growth hormones. Thrive alive b1 green (organic) is a better substitution. Some really odd things can occur with too much superthrive. Quite a few people believe ST to be snake oil. I can say in a side by side, using as directed along with base nutes,, thrive alive produces more favorable results on marijuana. Neither are needed to grow from seed to harvest, they are booster tonics. I personaly wouldn't grow without thrive alive. As noted earlier, zero sickness since using it, and clones given to me In poor health rapidly recovered under it.