What did @grindtopshelf actually say?
The creator opens with a folk test for low testosterone: if you can sleep on your stomach and don't wake up with an erection, "you probably have low testosterone." Her partner got bloodwork, his levels were low, a doctor recommended TRT injections, and they declined in favor of a TikTok Shop supplement called Kingmaker. It contains beetroot, maca root, zinc, and roughly ten other ingredients. After two weeks, she says, he's lifting heavier, has more energy, sleeps better, and his chest "actually looks defined." She closes by pointing viewers to a flash sale in the shop link. The overall message is simple: a natural booster worked as well as injections would have, and it worked fast.
Does the science back this up?
Some ingredients have modest supporting data. Most of the dramatic two-week claims do not. Let's separate the two.
Zinc deficiency is genuinely linked to reduced testosterone. A study by Prasad et al. (1996, Nutrition) found that zinc supplementation in zinc-deficient men raised testosterone levels meaningfully. But that effect is specific to men who are actually deficient. If your zinc is fine, more zinc does not push testosterone higher.
Maca root (she calls it "macaroo") has evidence for improving libido and subjective energy, but not for raising testosterone itself. A review by Gonzales (2012, Evidence-Based Complementary and Alternative Medicine) found no consistent hormonal changes in clinical trials. Beetroot is a source of dietary nitrates, which may improve blood flow and exercise performance at clinical doses. That's a real, if modest, effect. It does not raise testosterone.
The idea that "poor sleeping decreases testosterone" is accurate. Research by Leproult and Van Cauter (2011, JAMA) showed that restricting sleep to five hours per night for one week reduced testosterone levels in young men by 10 to 15 percent. That part she got right.
What the evidence does not support is the claim that any combination of these ingredients produces results "like steroids" in two weeks, or that they can substitute for prescribed TRT in someone with clinically confirmed hypogonadism.
What did they get wrong (or right)?
She got the sleep-testosterone connection right. That's real physiology, not bro-science. Credit where it's due.
Everything else deserves scrutiny. The morning erection test is not a clinical diagnostic for low testosterone. Testosterone levels vary throughout the day and are affected by dozens of factors. A single symptom observation is not bloodwork.
More seriously: her partner apparently had confirmed low testosterone diagnosed by a physician, who recommended TRT. Choosing a supplement over medical treatment for confirmed hypogonadism is a meaningful decision, and framing that choice as obviously correct, because the supplement "works like steroids," is irresponsible. OTC testosterone boosters have not been shown to raise serum testosterone to therapeutic ranges in men with clinically low levels. A systematic review by Balasubramanian et al. (2019, World Journal of Men's Health) examined 50 top-selling testosterone supplements and found that fewer than 25 percent had any human trial data, and none demonstrated testosterone increases comparable to TRT.
Claiming visible chest muscle definition changed in two weeks from a supplement is almost certainly a placebo or expectation effect. Meaningful hypertrophy takes longer than that regardless of what you're taking.
What should you actually know?
If a doctor ran bloodwork and told someone their testosterone was low enough to warrant TRT, that is a clinical finding. "Natural boosters" are not a regulated substitute for that conversation. Some men with borderline-low testosterone and correctable lifestyle factors, like poor sleep, zinc deficiency, or obesity, may see levels improve through those changes. But that's different from what's being sold here.
The supplement industry is not required to prove products work before selling them. The FDA regulates supplements under DSHEA, which means the burden of proof is far lower than for pharmaceuticals. Kingmaker is not an FDA-approved treatment for hypogonadism.
If you have symptoms of low testosterone, the right move is bloodwork, ideally a morning total and free testosterone level, not a TikTok Shop flash sale. If levels are genuinely low, work with a licensed provider to weigh the actual options, which may include lifestyle changes, or may include TRT, or both. That's a medical conversation, not a shopping decision.