Take your vitamin C in the evening around dinner and it wont effect it. I have used Dexamp for along time. Urine Acidifying agents will make the AMP get excreted faster. Alkalizing agents will decrease the rate of excretion. It also increases total absorbtion, (drinking a glass of orange juice (acidic) for example around dose time could make the drug be absorbed slightly less and excreted faster resulting in less effect.)
If by AMT you mean alpha-methyltryptamine, I cant say for sure as its one of the few drugs I have little pharmacological knowledge of. If there's a drug combo you MUST know about it is never combine an MAOI with ANY drug unless you KNOW it is safe.
Best drug combo's in my opinion are
-D-AMP + Hydrocodone or oxycodone *best in my opinion*
-D-AMP + Small doses of Alprazolam
-Low dose D-AMP + cannabis + Alprazolam
-D-AMP + Nicotine (I didn't smoke cigarettes until using D-AMP)
*removed last combo as it is too dangerous for someone who doesn't REALLY know what they are doing*
Worst combo's
-D-AMP + Alcohol (feels dirty and doesn't mix well in my opinion)
-D-AMP + Cannabis alone (Overstimulating and adds to paranoia/anxiety)
-D-AMP + any Psychedelics (they don't flow well for me or most people at all)
If I were going to take a combo to get the best recreational effects I would take about double my normal daily dose of D-AMP + 12.5-20mg of EITHER Hydrocodone OR Oxydocodone. The effects I get from that are the stimulation and effects i've listed (normal amphetamine high) but the low dose opiate is slightly sedating, increases my social desire and ability MUCH greater than AMP alone. Euphoria level isn't super high but i would call it euphoric. ***always adjust your doses based upon YOUR body YOUR tolerance and previous experience. when in doubt, less is more***
Common side effects of D-AMP (in my experiences + research)
-Dry Mouth (keep a drink handy)
-Decreased/No appetite (make yourself eat healthy amounts of food)
-Headache (you should be able to figure that out)
-Rapid heart beat and or palpitations. (decreases somewhat as you become tolerant)
Less common but still prevalent (I get some of these, and there isn't alot that can be done about them without taking other drugs which is not advised or encouraged at all)
-Changes in sexual desire/ability
-Personality changes (less social or more social)
-Irritability/anger
To give you an example of what to expect at different dosages here is how I'd be effected. I am a Male, 150 pounds, tolerance to 70mg vyvanse taken daily. This dose still effects me however my body is used to it, so you may have much less tolerance to the effects as I do.
Easy way to think about it is, I have taken the equivalent of 30MG Adderall XR OR, 25MG Dexadrine XR daily for 4+ months.
**So MY doses are NOT the same as yours. I have tolerance to the drug, I may be able to handle 60mg fine, and you may become very sick with no tolerance to higher doses.**
~10mg XR (extended release)
-decreased fatigue
-slightly increase heart rate
-25-30% control
~20mg XR
-Decreased fatigue within 50-60 minutes (sleep to wake)
-slight-moderate increased HR
-lessening of desire to engage in social conversation (minimal)
-motivation to do less desirable tasks increased to noticeable level
-Dry mouth (not excessive but noticeable)
-50% ADD control.
~30mg XR **Effects I normally get from my daily dose**
-Decreased fatigue (awake from sleeping in 30-45 minutes)
-increased heart rate & mild palpitations
-Dry mouth (need a sip of water about every 15 min)
-Less desire to be social and more desire to complete tedious tasks*see below
-Mood changes (ranging from moderately irritable to slightly increased mood)
-Appetite suppression to the extent I may go 10 hours without any food easily
-Slight increase in sweating (not very noticeable)
-Mild jaw clenching
-75% ADD control
*skipping 40-50mg as effects blur together*
~60mg XR
-Fatigue has left the building (awake from sleep in ~40min)
-Heart rate is elevated (add about 35-45bpm to your sober heart rate) and palpitations are common
-Motivation to do tedious/unwanted tasks greatly increased
-Increased physical stamina & noticeable increased mobility
-Excessive dry mouth
-No appetite (eating more than a few bites of food that day would be unlikely)
-Mood Changes (increased mood, or decreased mood and irritability)
-Sexual ability from the time the drug begins to effect me until 8-10 hours later is greatly reduced
-Social pattern changes vary from extremely less social to greatly increased social ability and desire (depends on the day, current mood, and especially what other drugs I have taken)
-Increased sweating(not excessive but somewhat noticeable to myself atleast)
-Jaw clenching/tension (not excessive like X but noticeable)
-Possible crash (I'm one of the few who only gets very mild crashes from amp and 60mg would still give me at least a modest crash)
-ADD control 100% (may hyper focus)
Just the ramblings of myself on amphetamine, hopefully there was useful information in there.