Don't inject DMT that has been just precipitated FASA. It still contains gross amounts of solvent impurities.
It is
NOT SAFE to inject anything that has been extracted from plant matter with industrial purity solvents.
But, any chance of possible harm can be greatly reduced with basic purification techniques. Try at least recrystallizing your FASA precipitated fumarates.
The most damage you'll likely cause is muscle soreness due to excess fumaric acid. That is quite unpleasant.
You are still at risk for an abscess, either benign or infectious, using a micron filter will immensely help avoid the chances of this.
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100mg was plenty for me, If it wasn't enough for you, Up the dose. Simple.
IM is a very interesting route of ingestion for DMT, (intense extended experience) I would absolutely recommend the actual experience.
But,
I would not recommend the procedure for safety reasons. No matter how much you sugar coat it and talk about how safe it CAN be. It remains a
HIGH RISK method of administration. You are opening up your body to infection each time you inject something into it, you are always at risk of an abscess. All you can do is reduce the likelihood of complications.
Expect nothing, Receive everything.
"Experiment and extrapolation is the only means the organic chemists (humans) currrently have - in contrast to "God" (and possibly R. B. Woodward). "
He alone sees truly who sees the Absolute the same in every creature...seeing the same Absolute everywhere, he does not harm himself or others. - The Bhagavad Gita
"The most beautiful thing we can experience, is the mysterious. The source of all true art and science."