Calcium – Whilst calcium does have some benefits in the production of
testosterone, supplementing for just 5% of your recommended daily intake isn’t
really going to make a great deal of difference, so this is a bit of a pointless
ingredient to have in the product.
Zinc (As Zinc Gluconate) – Zinc is essential for healthy testosterone production
and deficient men do typically have reduced rates, supplementing has been shown
to cure low testosterone in zinc deficient men. As the mineral is so important,
we do like to see it in test boosters. There is only 50% of the RDI in here, whereas
most better test booster do include 100%.
Sodium – Not really necessary, very few men are deficient, supplementing
for it is redundant.
Tribulus Extract – Tribulus at 250mg is a decent inclusion, it’s been used
for quite some time in test boosters, and is shown to improve athletic performance.
[2]
Shilajit Extract – Shilajit is middling as a test booster, and beyond
that in Muscletech Test HD it’s underdosed, the only placebo-controlled trial
was done using 250mg and here we only have 100mg. [3]
Boron Citrate – as mentioned in the introduction, boron is underdosed, 5mg
whereas 10 is the ideal. 5mg will still have some effect, but not as well as a
higher amount.
Broccoli Powder – This is of no use for testosterone boosting and is
simply a gimmick that muscletech keep putting in their products.
Stinging Nettle Extract – This is OK, but stinging nettle extract is one
of the less effective ingredients found in test supplements.
Safed Musli Extract – This is actually quite unusual as ingredients go,
and it does seem to have some efficacy, but the trials that back it required
dosages of 1000mg [4] a day not the 50mg dose in Muscletech HD.
1 – https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4120469/
2 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4120469/
3 - https://pubmed.ncbi.nlm.nih.gov/26395129
4 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3902593/