@NNight this was many years ago, I don't recall!

As for absorption, silica does not absorb as silica but rather as orthosilicic acid. This is produced by the reaction of water on silica, though the presence of acid increases this conversion. 
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The absorption of silica is very poor so I found the best way to take it is by adding [DE] to water to begin with. I put a large spoonful in a gallon of water and let it settle out. Once it settles out you cannot taste it. The water will dissolve a tiny amount of the silica to form the orthosilicic acid. The more pure the water is to begin with the more it will dissolve.
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By adding it to a large volume of water you will also get more in to your system as opposed to supplements. If you take a capsule of silica the vast majority will never be absorbed and will just pass through your system. When added to water and drunk throughout the day you will absorb a little each time you drink your water. So in the long run you will end up with more silica entering the bloodstream for use by the body.

@NNight I used to mix DE with water then let it settle and only drink the clear water layer. IIRC the silica is turned into a different water-soluble form?

Indirectly - things that lower serotonin / cortisol

@nothingclever Perhaps some anti-bacterial essential oils (eg tea tree) diluted in a suitable carrier oil that doesnt cause issues (Olive? Coconut? Jojoba?)

Snow goggles are a type of eyewear traditionally used by the Inuit and the Yupik peoples of the Arctic to prevent snow blindness.

@BearWithMe Perhaps something as simple and natural as prune juice?

Pro progesterone effects...

These data suggest that cinnamaldehyde selectively induced progesterone production and inhibited production of testosterone and dehydroepiandrosterone in human adrenal cells.
https://www.sciencedirect.com/science/article/abs/pii/S0024320510001803

Also, to bypass any possible heavy metal contaminants maybe the use of cinnamon essential oil could work. Eg, 1 drop in food/drink etc.

Cinnamaldehyde is an aldehyde found in cinnamon bark in high concentrations. It's used as a flavor and medicine. Cinnamon bark is usually used medicinally in doses of 1-6 grams orally. 6 grams of cinnamon can contain from to 42 to 189 mg cinnamaldehyde. Cinnamon contains approximately 1 to 3.5 percent essential oil. The essential oil is approximately 70 to 90 percent cinnamaldehyde.

— http://herbpedia.wikidot.com/cinnamaldehyde

Less water, more watermelon, cucumber, coconut water and other watery fruit and veg.

@Corngold see https://lowtoxinforum.com/threads/use-avoidance-of-herbs-essential-oils-plant-extracts.10065/#post-496290

@Corngold you can probably guess menthol has the opposite effect!