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Dr. Cannabis

Concentrate

Wax, shatter, rosin, hash and similar. Very high potency. Health Canada advises new users avoid these entirely.

Onset
1–10 minutes
Duration
2–4 hours

Concentrates commonly test between 60% and 90% THC. Health Canada explicitly warns that hash, kief, wax and shatter increase the risk of serious adverse effects for new or occasional users.

There is no meaningful therapeutic argument for a first-time user to start here. Tolerance and dependence develop faster with high-potency products.

Advantages

  • • Efficient for high-tolerance medical users
  • • Fast onset
  • • Minimal plant material

Trade-offs

  • • Very high potency
  • • Faster tolerance development
  • • Requires specific equipment

Cautions

  • • Not appropriate for new or occasional users.
  • • Higher-potency products are associated with greater risk of adverse psychiatric effects.

Best suited to

  • • High-tolerance experienced users only

Sources

  1. Health Canada. Cannabis: Lower your risks. Modified 2019-06-14.Accessed 2026-08-15.
  2. NASEM 2017, Committee Conclusions (summary PDF of all evidence-tier conclusions).Accessed 2026-08-15.