I've made my own solutions of PDE5 inhibitors using various solvents (from Food Grade Isopropanol - don't - all the way to DMSO and PEG400). They all taste admittedly terrible. The raw powder tastes much better, tbh. This goes against harm reduction, but overdosing on PDE5 inhibitors is hard to do if you have a mg scale (a good investment for any of us) and can be administered by just about any ROA. Orally, Transdermally with DMSO, rectally (careful, in a proper solvent, such PEG400 - the effects are just about doubled), and I suppose filtered and shot SubQ. Don't do the latter, that's disgusting and unnecessary, not to mention these PDE5 inhibitors aren't water soluble.
Interestingly enough, insufflation of Tadalafil (cialis powder) may be the most efficient ROA available for the chemical. As little as 3mg daily does a great job for the "low daily dose" regimen. And who doesn't like starting a day off with a line of bolivian bone... Nevermind.
A disclaimer... PEG is a molecule of various weights. The higher the number, the larger the molecule, and the less it's capable of being absorbed. Having said that, the absorbable PEG's are all slightly toxic, to pay mind to that #, and the dosing regimen. For the record, using PEG400 to dissolve Tadalafil will yield a 0.25ml consumption of the chemical for low daily dose - well within tolerable limits. The very high numbers are highly difficult on the GI tract.
I should get in contact about this, though.
Last edit: If you get the PDE5 headache, that's due to a bloodpressure drop. Try your next dose with a gram of table salt (add it to your meal, the meal you should be adding to your viagra dosing, as it slows absorption and increases the effective window of the drug). Avoid booze (lol), any other blood thinners and anticoagulants etc.
It may work, but I prefer to mix bitter stuff with something sour. Its why you find alot of pre-work outs with a bit of a sour taste. To help mask the bitterness of the compunds.
Yes, sweet counters sour. Sour counters bitter. Try chewing a tylenol or caffeine pill - and then try it again with some lemon in the mix. Night and day.