Generally speaking, most anyone can take 1-3 capsules per day—the more your body weight, the slightly more signal you may need. Our testing confirms that there is no toxicity even at tenfold increase, so no worries in that regard.
As a rule of thumb, if your body weight is less than 180 lbs. (~80 kg), normally one capsule is enough for a good signal. If your body weight is more, you might need another capsule to initiate the desired result. Many people weighing up to 220 lbs. and more feel the beneficial effects with just one capsule. See what works best for you.