The suggested daily intake of Tongkat Ali 1:200 is 4 capsules per day, and it is known that each capsule contains 300mg of Tongkat Ali, equiv. to 1200mg per day. Would there be any harm if someone went overdose, i.e having 6 or 8 caps instead of 4.
You can take up to double the dose with no problems. In fact some bodybuilders take double the dosage on a regular basis. However I would not recommend taking any more than that, not so much because of harmful effect, but because there would probably be no benefit on such a high dosage so you might be wasting the product.