r/afinil Aug 13 '25

Does amino acids reduces the effects of modafinil and methylphenidate? NSFW

Hi everyone, I've been using methylphenidate and sometimes modafinil for narcolepsy on medical advice.

After much research on various Reddit threads, etc., I'm combining several substances, but never overdosing on methylphenidate above 20mg daily, in an attempt to prolong or increase the medication's effect.
Many combinations, I'm currently testing include, for example, L-tyrosine, ALCAR, NALT, and caffeine capsules. However, I recently read that excess acid in the blood can decrease the effects of methyl/moda. So, I'd like know anything about this or if you've tried them and noticed a difference in the medication.

By the way, i read that acidic drinks reduce the effects of methylphenidate/moda. Does anyone know if this is true?

Any opinion and combination is welcome ;)

5 Upvotes

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1

u/sinisteraxillary Aug 15 '25

Excess acid? Define excess please.

This sounds suspiciously like woo

1

u/Spoztoast Aug 18 '25

The body works incredibly hard to maintain homeostasis, especially with blood acid levels between 7.35-7.45. I doubt this 0.1 variation will affect it much, if any.

Trying to mess with your blood acid levels will mess you up badly and fast.