Nootropic stacks on TikTok: separating signal from supplement hype

What did @xabisosobantu actually say?

Tabiso walked through five supplements he takes daily: L-tyrosine for dopamine, Alpha-GPC for choline support, ashwagandha (KSM-66) for stress, noopept sublingually for memory and verbal fluency, and lion's mane mushroom for long-term memory. He ranked them by perceived effectiveness, called noopept a "neutral pick peptide" developed in Russia, and claimed lion's mane has helped Alzheimer's patients "regain some of their memory." He also warned that ashwagandha will "make you numb" without cycling, and recommended taking it sublingually by opening capsules and holding the powder under the tongue for ten minutes.

The stack is real, the products are commercially available in South Africa, and several of his observations are at least directionally correct. But there are some meaningful errors and one claim that deserves a hard look before anyone replicates this routine.

Does the science back this up?

Partially, and it depends heavily on which compound you're asking about. The evidence quality varies wildly across these five supplements, from reasonably well-studied to almost entirely anecdotal.

L-tyrosine is a precursor to dopamine and norepinephrine, not a "replacement" as Tabiso describes it. The distinction matters. Meta-analyses like Hase et al. (2015, Journal of Psychiatric Research) found tyrosine may help under acute cognitive demand or stress, but effects in healthy, non-depleted individuals are modest at best.

Alpha-GPC is one of the better-supported choline donors. Parnetti et al. (2001, Mechanisms of Ageing and Development) found it improved cognitive scores in early Alzheimer's patients. Its role in healthy adults stacking it with noopept is less studied.

Ashwagandha KSM-66 has genuine trial data. Chandrasekhar et al. (2012, Indian Journal of Psychological Medicine) showed significant cortisol reduction and stress score improvements in a double-blind placebo-controlled trial. That part holds up.

Noopept is a synthetic peptide developed in Russia and classified as a drug in many jurisdictions. Human trial data is sparse and mostly from Russian-language literature. Animal studies show neuroprotective effects (Ostrovskaya et al., 2008, Bulletin of Experimental Biology and Medicine), but calling it effective based on personal experience is not the same as demonstrated efficacy.

Lion's mane (Hericium erinaceus) has pilot data supporting nerve growth factor stimulation. Mori et al. (2009, Phytotherapy Research) found cognitive improvements in a small randomized trial over 16 weeks. Two and a half years of use is plausible, though the Alzheimer's claim Tabiso references needs context.

What did they get wrong (or right)?

Let's be direct. Tabiso got several things roughly right. Ashwagandha does help with stress adaptation, KSM-66 is a well-standardized extract, and cycling it to avoid tolerance is reasonable advice backed by practical logic if not heavily studied. Alpha-GPC stacking with racetam-class compounds like noopept is a recognized practice because noopept may increase acetylcholine turnover, creating choline demand.

Where he slips up: calling L-tyrosine a "dopamine replacement" is inaccurate. It is a precursor, and whether it meaningfully raises dopamine in a healthy, well-nourished person is genuinely unclear. The empty stomach recommendation has some basis since amino acids compete for absorption, but the framing overstates certainty.

The Alzheimer's claim about lion's mane is the one that needs a red flag. Mori et al. (2009) studied mild cognitive impairment patients, not confirmed Alzheimer's disease. Saying it helps patients "regain some of their memory" is an overstatement of limited pilot evidence, and it is the kind of claim that could mislead someone managing a serious condition.

Noopept's classification also matters. It is not a supplement in most regulatory frameworks. In South Africa it occupies a grey area, but users should know this is not the same category as lion's mane capsules from a health shop.

What should you actually know?

The honest summary is that some of this stack has real evidence behind it, and some of it is personal experimentation dressed up as a ranked list. That is not unusual for the nootropics space, but the stakes vary by compound.

Ashwagandha and lion's mane are relatively low-risk and have trial-level support for their claimed mechanisms. L-tyrosine is safe for most people at typical doses. Alpha-GPC is well-tolerated and genuinely useful as a choline source.

Noopept is the outlier. It is a synthetic compound with limited human data, not legally a supplement in many countries, and taking it by opening capsules and holding the powder sublingually is not a method validated in any published trial. The subjective experience Tabiso describes may be real, but it cannot be generalized, and the regulatory and safety profile is meaningfully different from the other four products in his stack.

Anyone watching this and considering replication should consult a licensed clinician, particularly for noopept, and should not interpret a 8,200-view TikTok as clinical guidance regardless of how compelling the personal results sound. Self-reported n-of-1 data is not evidence, even when it comes from someone who is clearly thoughtful about what they are doing.