I'm in the process of tapering down on Tirz but I'm still on 12.5/wk right now. I'm about to start in on a kit from a vendor (X, it's been in the freezer a minute!) I haven't tried before. I have not tested this product myself (I understand this is not best practice; I have seen third party tests and am willing to rely on those). Is it smart/useful to test a smaller dose on the first use of product from a new vendor in case of any adverse effects, or is that just going to make it impossible to know about efficacy while not actually decreasing risk in any real way?